This means the birth rate would exceed the death rate, to make a positive growth rate in the population. So overall, the population will go up if more mice are born compared to those that die off.
Choices A, B, D and E all describe factors that would either kill mice or push them out of the habitat. Either way, these answer choices would have a decrease in population rather than increase. So we can eliminate these answer choices.
Which of the following is an aspect of asexual reproduction that is sometimes disadvantageous? O It allows animals that do not move around to produce offspring without finding mates. O It allows a population to expand quickly to exploit available resources. O It saves the time and energy of gamete production. O It produces genetically uniform populations. O It allows an animal to produce many offspring quickly.
O It allows an animal to produce many offspring quickly is an aspect of asexual reproduction that is sometimes disadvantageous.
This is a reference to the method through which living things give birth to their offspring. The two main methods of reproduction are sexual reproduction and asexual reproduction.In order to create their offspring, the male (Sperm) and female (Ovum) gametes must unite.In this method, a single parent participates in the development of the child.A benefit of asexual reproduction that sexual reproduction does not have is the quick rate of population growth of asexual organisms.Being unable to combine features from both parents is a drawback of asexual reproduction. Only one parent's DNA is present in an organism that is created through asexual reproduction. In actuality, the child's DNA is a perfect replica of its parent's. For the individual, this may be problematic.
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Based on the evolutionary tree of the three domains, which of the following is true? O All three domains have common ancestor O Domain Bacteria and domain Eukarya are more closely related each other Ihan domain Archaea O The Eukarya have emelned the same throughout evolutionary Lime O All three domains zquolly (ela120 another O The Eukerye are the common ancesiors inree damains
Based on the evolutionary tree of the three domains, all three domains have a common ancestor is true. Studies of molecular biology, as well as phylogenetic analysis, have shown that all three domains of life (Bacteria, Archaea, and Eukarya) share a common ancestor. However, the relationships between the three domains are still being studied and debated, so it is not clear which of the other statements are true.
All three domains of life (Bacteria, Archaea, and Eukarya) share a common ancestor. This is supported by molecular biology and phylogenetic analysis, which have shown that the three domains are related through evolution. However, the exact relationships between the three domains are still being studied and debated.
while some studies suggest that Bacteria and Eukarya are more closely related to each other than either is to Archaea, others suggest that Archaea is more closely related to Eukarya.
Additionally, while Eukarya share a common ancestor, it is not clear if they have remained the same throughout evolutionary time or if the Eukarya are the common ancestor of the three domains.
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Which of the following features of plant cells allows for apoplastic movement water? A. plasmodesmata B. porous cell walls C. largc central vacuale D. aquaporins (water channels} E. casparian strip
Water can move apoplastically through cells with porous cell walls that mimic plant cells.
What causes the water to move in plants?As the water travels from cell to cell through osmosis in the root hair, it eventually reaches the xylem. The water is then transferred to the leaves via the xylem vessels and evaporated during transpiration. Similar to the phloem, the xylem consists of elongated cells.
Which of the following best describes the water transport pathway in a plant?The principal tissues in charge of this movement are phloem and xylem. Water and nutrients are transported in plants in part by evapotranspiration, stomatal regulation, and water potential.
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Which statement is an example of the "inheritance of acquired characteristics" misconception that was popular before Mendel's work?
A.
A curly-tailed dog and a straight-tailed dog will have curly-tailed offspring.
B.
A deer that has white spots will have offspring with white spots.
C.
A cat that has lost an ear will have offspring that are missing an ear.
D.
A brown horse and a white horse will have brown and white offspring.
The statement that depicts an example of "inheritance of acquired characteristics" misconception that was popular before Mendel's work is as follows: a cat that has lost an ear will have offspring that are missing an ear (option C).
What are acquired traits?Acquired traits are the character developed in an individual as a result of environmental influence. These traits are not coded by the DNA of a living organism and therefore cannot be passed on to future generations.
On the other hand, inherited traits are traits that are inherited from the parents to the offspring. Hair, skin, eye colour, body type, height, and susceptibility to certain diseases are some of the examples of inherited traits in humans.
However, prior to the work of Gregor Mendel, who is regarded as the Father of Genetics, there has been misconceptions that acquired traits can be inherited.
Example of an acquired trait that has caused this misconception is that a cat that has lost an ear will have offspring that are missing an ear.
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How does the mismatch repair pathway identify the incorrect base in E. coli?
The error is found on the DNA strand identified by the absence of nicks.
The error is found on the DNA strand identified by the presence of nicks.
The error is found on the methylated DNA strand.
The error is found on the unmethylated DNA strand.
The correct option (A) The error is found on the DNA strand identified by the absence of nicks.
How does E. coli mismatch correction work?The status of adenine methylation at d(GATC) sequences governs coli mismatch repair . Because this alteration happens after DNA synthesis, freshly produced DNA persists in an unaltered form for a brief period of time, and it is this brief lack of methylation that guides repair to the new strand.
What is the E coli repair system?In Escherichia coli, two-strand DNA damage is repaired by recombination with a homologous undamaged duplex, generally the sister chromosome, which is created largely during replication on a template DNA with one-strand damage.
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True or false? Species act as agents of natural selection when they interact.
Answer:
pretty sure it's true or could be false. but my gut is telling me true.
exogenous antigens are processed for immune recognition by ________ cells.
Dendritic and macrophage cells prepare exogenous antigens for immunological detection.
Why do T cells exist?one particular white blood cell. T cells are produced by bone marrow stem cells and are a component of the immune system. They aid in infection prevention and might aid in the fight against cancer. additionally known as T lymphocytes and thymocytes.
What is an exogenous antigen defined as?Foreign antigens are defined as those that exist in bodily fluids outside of cells. extracellular antigens. These invaders consist of bacteria and bacterial toxins, parasitic worms, pollen and dust that are inhaled, as well as viruses that have not yet infected a bodily cell. An exclusive subclass of cells known as antigen-presenting cells (APCs)
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what is our position in GMO?
GMO is a broad term used to describe any organism whose genetic material has been modified through genetic engineering techniques.
What is genetic material?Genetic material is a term used to describe the molecules that contain genetic information and are responsible for the transmission of genetic traits from one generation to the next.
Within this definition, there are a wide variety of different types of modified organisms, from plants and animals to bacteria and viruses. As such, it is difficult to define a single position on GMO, as it depends on the specific application and context. Generally, however, it is accepted that the use of GMO can be beneficial in certain cases, such as producing more nutritious foods or developing new medicines and treatments for diseases. At the same time, there are also concerns about the potential risks associated with GMO, such as the spread of genetically modified organisms into the environment and the potential for cross-contamination of food or other organisms. For this reason, it is important to weigh the potential benefits and risks associated with GMO before making any decisions.
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Match the structure of the embryonic brain with the adult brain structure it forms.
1. Forms the thalamus, hypothalamus, and epithalamus
2. Forms the medulla oblongata
3. Forms the cerebrum
4. Does not form a new secondary vesicle
5. Forms the pons and cerebellum
Telencephalon
Diencephalon
Mesencephalon
Metencephalon
Myelencephalon
The structure of the embryonic brain matches with the adult brain structure it forms in the following way :
3. Forms the cerebrum -Telencephalon
1. Forms the thalamus, hypothalamus, and epithalamus - Diencephalon
4. Does not form a new secondary vesicle - Mesencephalon
5. Forms the pons and cerebellum - Metencephalon
2. Forms the medulla oblongata - Myelencephalon
The brain can be divided into three basic units: The forebrain, midbrain, and hindbrain. The hindbrain includes the upper part of the spinal cord, the brainstem, and a wrinkled ball of tissue called the cerebellum. The hindbrain controls vital functions of the body such as breathing and heart rate. Differential outgrowth along the walls of the neural tube occurs during development, giving rise to the four major divisions of the embryonic brain: (1) forebrain (forebrain), (2) midbrain (midbrain), (3) hindbrain (hindbrain), and (4) spinal cord.
Human brain development is a complex process that begins in the womb and continues through. Some researchers believe that the brain continues to develop throughout life.
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What are some solutions that you think will work to reduce our greenhouse emissions?
A plant is an organism that does what
Answer:
A plant is an organism that does the beautiful process of photosynthesis and gives out oxygen as a by-product of the reaction, which helps to breathe and be alive.
Explanation:
Sodium movement into your neurons results depolarization which activates voltage gated sodium channels in the cell membrane. More sodium enters the cell resulting in more depolarization and the action potential moves down the axon.
positive or negative feedback?
The entry of sodium into your neurons results in depolarization which activates voltage-gated sodium channels. This represents an example of a positive feedback mechanism.
What happens to sodium channels during depolarization?During the depolarization phase, the gated sodium ion channels on the neuron's membrane suddenly open and allow sodium ions (Na+) present outside the membrane to rush into the cell. As the sodium ions quickly enter the cell, the internal charge of the nerve changes from -70 mV to -55 mV.
Positive feedback mechanisms control self-perpetuating events that can be out of control and do not require continuous adjustment. In positive feedback mechanisms, the original stimulus is promoted rather than negated. It increases the deviation from an ideal normal value.
Therefore, the entry of sodium into your neurons results in depolarization which activates voltage-gated sodium channels. This represents an example of a positive feedback mechanism.
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HELP!!!!!!LIMITED TIME!!!!!!!!!!!!!!!!!!
Which of these statements applies to a scientific hypothesis but not
to a scientific theory?
Select one:
It has been proven to be true by experiments.
It consists of tentative statements that can be tested.
It is supported by a number of independent observations.
It explains a wide range of observations and results.
The principles and theories of science have been established through repeated experimentation and observation and have been refereed through peer review before general acceptance by the scientific community. Acceptance does not imply rigidity or constraint, or denote dogma. Instead, as new data become available, previous scientific explanations are revised and improved, or rejected and replaced. Science is a way of making sense of the world, with internally-consistent methods and principles that are well described. There is a progression from a hypothesis to a theory using testable, scientific laws. Only a few scientific facts are natural laws and many hypotheses are tested to generate a theory. Find out how scientific hypotheses, theories and laws describe the natural world.
Which of the following are factors that influence human resources requirements? (Select all that apply.)
The following are factors that influence human resources requirements are retirements, customer needs for new products or services and promotions.
To determine the resources required to carry out the project's work, the project manager defines resource requirements. To define a resource demand, carry out the subsequent procedures. One or more jobs should be added to the work breakdown structure.
The exact skills or qualities required by the individuals who carry out the project's work are referred to as human resource requirements. A human resource requirement for a project like developing custom software is to have at least one individual who can create software.
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Following question may be like this:
(Which of the following are factors that influence human resources requirements? (select all that apply)
a. the external labor market
b. retirements
c. promotions
d. customer needs for new products or services)
Retirements, consumer requests for new goods or services, and promotions are all variables that impact human resource requirements.
The project manager specifies resource needs in order to identify the resources needed to complete the project's task. Execute the following processes to define a resource demand. One or more jobs should be added to the work breakdown structure.
Human resource needs are the specific talents or traits required by the personnel who carry out the project's job. A human resource need for a project like generating bespoke software is to have at least one employee who can design software.
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Complete question :
(Which of the following are factors that influence human resources requirements? (select all that apply)
a. the external labor market
b. retirements
c. promotions
d. customer needs for new products or services)
a process that involves replacing body fluids with clear, pliable plastic, making it possible to position in dynamic poses not only a whole cadaver but also skeletal bones and internal systems such as blood vessels is referred to as being
a process that involves replacing body fluids with clear, pliable plastic, making it possible to position in dynamic poses not only a whole cadaver but also skeletal bones and internal systems such as blood vessels is referred to as Plastination
Plastination is a technique that includes replacing bodily fluids with transparent, malleable plastic, enabling the positioning of not just the entire cadaver but also the skeleton, bones, and internal organs such as the blood and veins in dynamic positions. Body component plasticination is becoming increasingly crucial to the long-term preservation of tissue and anatomical education. The purpose of this position paper is to examine some issues with plastination as a fantastic technique for tissue preservation over an extremely extended period of time. It also discusses the significance of plastination. There are various plastination methods, each with benefits and drawbacks. Plastination, also known as forced polymer impregnation, is the best technique for permanently preserving tissues, entire bodies, or individual body parts.
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The process of replacing bodily fluids with transparent, flexible plastic so that not only the entire corpse, but also internal systems such as the skeleton and blood vessels, can be posed in dynamic poses is called plastination.
Plastination is a technique that replaces bodily fluids with transparent, malleable plastic, allowing not only entire corpses, but skeletons, bones, and internal organs such as blood and veins to be placed in dynamic positions. Plasticization of body components is becoming increasingly important for long-term tissue preservation and anatomical shaping. The purpose of this opinion paper is to examine some of the issues regarding plastination as an excellent technique for preserving tissue over very long periods of time.It also discusses the importance of plastination. There are various plastination methods, each with their own advantages and disadvantages. Plastination, also known as forced polymer impregnation, is the best technique for permanently preserving tissues, whole bodies, or individual body parts.
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Which of the following processes will most likely occur when you transfer a bacterial culture from 37 degree C to 10 degree C? A.the bacteria will start synthesizing cholesterolB.the bacteria will remove cholesterol from their membranesC.the bacteria will reduce the number of unsaturated bonds in the fatty acid tails of their phospholipidsD.the bacteria will increase the synthesis of phospholipids with very long fatty acid tails and insert these into their membranesE.the bacteria will increase the synthesis of phospholipids with unsaturated fatty acid tails and insert these into their membranes
The answer is letter E, the bacteria will increase the synthesis of phospholipids with unsaturated fatty acid tails and insert these into their membranes.
Bacteria are capable of surviving different types of environments with varying temperatures. When it is exposed to a low temperature, as in the situation above (from 37 °C to 10 °C), it regulates its transition phase. Th cytoplasmic membrane of organisms plays a vital role when it comes to physiological environments.
When it comes to bacteria, their membrane is primarily composed of "phospholipids." It is said that the phospholipids with unsaturated fatty acids have a transition that is lower to that of phospholipids with saturated fatty acids when it comes to temperature.
Thus, the bacteria will have to increase the synthesis of phospholipids with unsaturated fatty acid tails and insert these into their membranes. This will help increase the membrane's fluidity, thus allowing it to survive in low temperatures.
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which of the following modifications is not associated with changes in eukaryotic gene expression?
A. chromatin remodeling complexes
B. insertion of variant histones into nucleosomes
C. histone acetylation
D. DNA acetylation
DNA acetylation Chromatin remodeling also called as chromatin modification if the addition of specific chemical groups to the histone protein associated with chromatin.
Who discovered DNA?The molecule now known as DNA was first identified in the 1860s by a Swiss chemist called Johann Friedrich Miescher. Johann set out to research the key components of white blood cells?, part of our body's immune system.
How is DNA formed?Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. Duplication of the genetic information occurs by the use of one DNA strand as a template for formation of a complementary strand.
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Look at the graphic JPG List and describe 3 methods of jellyfish movement
1 As the jelly contracts, it creates higher pressure within its bell, and the animal is pulled ahead to lower pressure 2. By flexing the edge of its bell, the jelly moves the vortex down and underneath 3. There the vortex pushes water up as it spins, giving the jelly an extra shove
Which option best describes the function of a gene?
I don't know what the options you were given are, but genes are the specific instructions for the construction of respective proteins. If there is an answer along the lines of that, I would choose that. Genes are just basically the bits of DNA that code for RNA that will then be converted into proteins. I hope this helps!
Even in cases of simple Mendelian inheritance within a population, the ratio of phenotypes of a specific character is rarely the same as the ratio of alleles for that character. Explain why these ratios differ.
Answer:
Even though the ratio of alleles for a specific character in a population is usually the same, the ratio of phenotypes of that character can differ due to the presence of multiple alleles of the same gene, dominance and recessiveness, and epistasis. In the case of multiple alleles, different alleles of the same gene can result in different phenotypes, so the ratio of phenotypes may not be the same as the ratio of alleles. Additionally, dominance and recessiveness can cause different alleles to result in the same phenotype, meaning the ratio of phenotypes may be different from the ratio of alleles. Finally, epistasis occurs when one gene affects the expression of another, which can also cause the ratio of phenotypes to differ from the ratio of alleles.
Explanation:
full answer was provided
From some observations, a student noticed there are fruit flies flying around and
landing on a banana in the kitchen. The student wondered if a certain type of fruit
will attract more fruit flies than another. The student set up four jars of the exact
same size on the countertop in an area where the light remains the same. They
weighed the following fruits and placed 110 grams of each fruit into the jars:
banana, strawberry, peach, watermelon. The student had 4 vials of fruit flies (all
female, same species, same number) and placed each vial directly in front of jar. The
student asked a friend to take the cover off of two of the vials while they removed
the other covers simultaneously. An hour later the student recorded the number of
fruit flies in each jar and continued to record data every twelve hours for 5 days in a
row. In this experiment, what is the independent variable?
of fline in and what is the dependent variable and what is the controlled variable?
Answer:
.
Explanation:
The independent variable in this experiment is the type of fruit, the dependent variable is the number of fruit flies in each jar, and the controlled variables are the size of the jars, the light, the temperature, and the number of fruit flies used.
The independent variable is the factor that the experimenter changes, in this case, the type of fruit. The dependent variable is the factor that changes as a result of the independent variable, in this case, the number of fruit flies in each jar.
The controlled variables are the factors that remain constant throughout the experiment, such as the size of the jars, the light, the temperature, and the number of fruit flies used. This helps to ensure that any differences in the number of fruit flies between jars can be attributed solely to the type of fruit, rather than to any other factors.
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define glycocalyx and it's functions
A dense, gel-like meshwork called the glycocalyx surrounds the cell and acts as a physical barrier to anyone trying to get inside.The glycocalyx is a layer that develops when the carbohydrate parts of large molecules extend past the membrane's outer surface.
FUNCTIONS:-
The sticky parts of the glycocalyx can help cells move and anchor because they are sticky.It also takes part in the migration of particular cell types.Glycolipids and glycoproteins form a viscous coating on the cell membrane that lubricates and protects it.In order to provide selectivity in binding, glycolipids and glycoproteins can function as receptors that bind particular compounds from the outside.This binding has the potential to change a cell's surface properties, which would then affect how the cells behave.Internal Links:-
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A nursing student was reading a case study about a patient being treated at a local hospital. The patient's charts included information about a tumor. If the tumor was diagnosed as a benign tumor. What additional information would support this claim?
A. The tumor remained in one location
B. The tumor impaired the function of neighboring organism
C. Tumore cells entered the blood and lymph vessels
D. New tumor formed all over the patient's body
Answer:
Additional information that would support the claim that the tumor is benign would be:
A. The tumor remained in one location
B. The tumor impaired the function of neighboring organism
Explanation:
Additional information that would support the claim that the tumor is benign would be:
A. The tumor remained in one location
B. The tumor impaired the function of neighboring organism
A benign tumor is a type of tumor that does not spread (metastasize) to other parts of the body and does not invade nearby tissue. They are typically not cancerous and are less likely to cause harm to the patient.
A characteristic of benign tumors is that they remain in one location and do not spread to other parts of the body. They also don't impair the function of neighboring organism.
Option C and D are characteristics of malignant tumors (cancerous) which are invasive and can spread to other parts of the body via the blood and lymph vessels, resulting in the formation of new tumors.
Which statement best describes the elements that make up living cells?
O They are primarily composed of oxygen and nitrogen.
O They are composed in equal parts of all elements.
O They are mainly composed of trace elements, such as zinc.
O They are primarily composed of a few key elements.
'They are primarily composed of a few key elements' best describes the elements that make up living cells.
What do you mean by cells?
Cells are the basic structural and functional units of life. They are the smallest units of living matter and are composed of various molecules and organelles that carry out specific functions. All living organisms are composed of cells, and all cells come from pre-existing cells.
Living cells are complex structures that are composed of a variety of different components, including proteins, carbohydrates, lipids, nucleic acids, and other molecules. These components work together to provide the cell with energy, structure, and the ability to reproduce and respond to its environment. The few key elements that make up living cells are vital for cell function and are essential for life.
Hence, Option D is correct.
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30 POINTS!!! PLEASE HELP!!!
What happened in Egypt for the first time in 2012?
Question 4 options:
A. Free presidential elections were held.
B. Foreign occupying armies left the country.
C. Ships passed through the Suez Canal.
D. Cairo was named the capital.
Answer:
Welcome to Gboard clipboard, any text that you copy will be saved here.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Tap on a clip to paste it in the text box.
Answer: a
Explanation:
bioc 406 which of the following are metabolic strategies used to treat urea cycle disorders? 1. high protein diet 2. supplement diet with arginine 3. supplement with molecules like benzoate that promote metabolic reactions that utilize ammonia.
The following metabolic strategies used to treat urea cycle disorders are:
supplement diet with argininesupplement with molecules like benzoate that promote metabolic reactions that utilize ammoniaThe amino acid arginine has the chemical formula (H2N)(HN)CN(H)(CH2)3CH(NH2)CO2H). A guanidine group is attached to a typical amino acid framework in the molecule.
At physiological pH, the amino and guanidino groups are protonated and the carboxylic acid is deprotonated (CO2), resulting in a cation. There is just one l-arginine enantiomer naturally occurring. Proteins frequently contain Arg residues.
The codons CGU, CGC, CGA, CGG, AGA, and AGG are used to encode. The creation of nitric oxide begins with the guanidine group in arginine. It
is a solid that is white and water soluble like all amino acids.
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The following metabolic approaches are utilised to treat urea cycle disorders:
arginine supplement dietUse chemicals like benzoate to boost metabolic pathways that use ammonia.The molecular formula for arginine is (H2N)(HN)CN(H)(CH2)3CH(NH2)CO2H. In the molecule, a guanidine group is linked to a normal amino acid framework.
The amino and guanidino groups are protonated at physiological pH, whereas the carboxylic acid is deprotonated (CO2), resulting in a cation. There is only one l-arginine enantiomer found naturally. Arg residues are commonly found in proteins.
To encode, the codons CGU, CGC, CGA, CGG, AGA, and AGG are utilised. The guanidine group in arginine is the starting point for the formation of nitric oxide. It is a whitish solid that, like other amino acids, is water soluble.
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Question 1 Short hairlike structures on the cell surface that stir fluid around stationary cells are called:
a. microfilaments b cilia
c. pili d. flagella e.intermediate filamen
Short hairlike structures on the cell surface that stir fluid around stationary cells are called cilia.
All mammalian cells have cilia, which are tiny, slender, hair-like structures. They may be solitary or many and are of a primitive character. Cilia are important for movement. They take part in mechanoreception as well. Ciliates are the name for organisms with cilia.
Cilia transport water in relation to the cell on a regular basis as part of their function. This mechanism may cause the cell to move through the water, as is the case for many single-celled organisms, or it may cause the water and its constituents to move across the cell's surface.
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LIMITED TIME!!! HELP FAST!!!
Which statement is most consistent with the theory of natural
selection?
Select one:
Organisms that are best suited to survive will pass their traits to
their offspring.
Different species breed with each other to produce offspring with
new helpful characteristics.
Changes in the environment cause mutations that help
organisms.
Organisms learn to adapt to changes in their environment in order
to survive.
Answer:
Organisms that are best suited to survive will pass their traits to their offspring.
Question 6(Multiple Choice Worth 3 points)
(04.01 MC)
Starting with the European settlers, humans have introduced earthworms from Europe and Asia into North American forests. These introductions continue through the transport of soil that contains non-native earthworms, such as during construction and through the release of non-native earthworms used for fishing. The effects of non-native earthworms are especially large in forests that did not have any native earthworms. For example, forests of the Great Lakes region did not previously have earthworms until humans introduced them. When non-native earthworms are introduced, the thick layer of leaves, known as leaf litter, covering the ground disappears quickly, thereby altering biogeochemical cycles.
What is a possible beneficial consequence of introducing the earthworms to forests in the Great Lake regions?
The earthworm increases the energy flow from one tropic level to the next.
The earthworms provide competition for other native, primary consumers.
The earthworms burrow, which improves the nutrients, flow of air, and water underground.
The earthworms are secondary consumers that provide another food source for tertiary consumers.
A possible beneficial consequence of introducing the earthworms to forests in the Great Lake regions is that the earthworms burrow, which improves the nutrients, flow of air, and water underground and is therefore denoted as option C.
What is an Earthworm?This is referred to as a specific group of invertebrates within the taxonomic phylum Annelida. It is also characterized by small, legless, tube-shaped animal that lives in soil through its burrowing abilities.
We were told that non-native earthworms when introduced caused the thick layer of leaves, known as leaf litter, covering the ground to disappear quickly.
This therefore means that the most likely effect is that their burrowing activities will improves the nutrients, flow of air, and water underground.
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true/false. as dna replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. this unwinding and separating of the dna requires three different types of proteins: helicase, topoisomerase, and single-strand binding proteins.
True , Helicase - breaks H-bonds between bases; binds at the replication fork
topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
single-strand binding - prevents H-bonds between bases; binds after the replication fork
As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. This unwinding and separating of the DNA requires three different types of proteins:
helicase - breaks H-bonds between bases; binds at the replication fork
topoisomerase - breaks covalent bonds in DNA backbone; binds ahead of the replication fork
single-strand binding - prevents H-bonds between bases; binds after the replication fork.
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