Answer:
Endocrine System Functions
Makes hormones that control your moods, growth and development, metabolism, organs, and reproduction. Controls how your hormones are released. Sends those hormones into your bloodstream so they can travel to other body parts.Explanation:
Can you tell from this tree whether a C at position 15 evolved before or after a T at position 15? Explain your answer
The evolutionary tree is not observed here but it is possible to answer this question by observing which nucleotide is found in the root of the node. It indicates the first substitution.
What is an evolutionary tree?A phylogenetic evolutionary tree is a diagram used to show the evolution of a given taxonomic group (for example, a group of species).
It is possible to trace the evolution of a given taxon by tracing the nucleotide substitution observed from a common ancestor.
In an evolutionary tree, the root of the node is represented by the common ancestor and therefore the presence of a particular nucleotide (either T or C) in that position can be considered as the ancestral character.
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Some plants in an area produce a toxin that protects them from being eaten by a variety of insect species. The toxin decreases reproductive rates in insects. Because of a genetic mutation, some fruit flies can detect the plant toxin and therefore avoid eating the plant.
A. Describe how the number of fruit flies in the population that can detect the toxin will most likely change over the next 25 years.
B. According to the mechanism of natural selection, explain how the change you described in Part A will occur.
C. Based on the changes in the fruit fly population, describe what will most likely happen to the plants’ production of the toxin. Explain your answer.
According to the mechanism of natural selection, explain how the change you described in Part A will occur. Thus, option "B" is correct.
What is "Adaptation of Insects"?"Adaptation of Insects"
The following that is an adaptation that would promote insect herbivory is the Insects evolve new taste receptors that trigger an avoidance reaction to the toxin.
Plants are regularly fed upon herbivorous creepy crawlies. to get security against such assaults plant has created a few instruments like generation of poisons and unstable substance that either slaughter the bother or pull in the normal adversaries of the creepy crawlies respectively.
Thus, the correct answer is B.
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Why do you think agritourism is so important? Give two reasons.
Answer:
1: it provides us with crops 2: gives more job opportunities
name the stimulus, control control center, and the receptor when ABA is released. Please I need answers thanks!
Answer
ABA
Explanation:
It is believed that this mechanism, in situations of hydric stress, is controlled mainly by abscisic acid, a plant hormone known as ABA. This hormone binds to receptors in the membrane of the guard cells and promotes the entry of calcium ions (CA2+), which function as messengers when opening ionic channels. When these channels are opened, the chlorine(Cl-) and malate2- ions pass from the inside of the cell to the wall and open the K+ channels, causing the exit of this ion as well. This process causes the water to come out and the stomach closure occurs. When the ABA is released from the receiver, the ions that came out of the cytoplasm, together with the water, return to the inside of the cell, making it turgid. At this moment, the stomach opens.
Therefore, it is perceived that the ABA causes the stomatum to close, thus guaranteeing water savings. In environments with water stress, this mechanism guarantees the survival of the plant.
In addition to water stress, several factors directly affect the opening and closing of the ostyolus, such as the concentration of carbon dioxide, light, temperature and water loss. It is also worth mentioning that the stomata also open and close at circadian rhythms, that is, according to daily rhythms.
what molecules link together to form proteins
Answer:
Peptide bonds
Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.
Where is the nucleus of an atom found and what does it contain?
The nucleus is in the center of the atom and it contains protons and neutrons.
Answer:
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
Hope this helps...
can a solution with a molarity of 0.2 be in equilibrium with a solution with a molarity of 0.4
Answer:
Yes.
Explanation:
There are two components to water potential: solute concentration and pressure. ... Can a solution with a molarity of 0.2 be in equilibrium with a solution with a molarity of 0.4? Two solutions will be at equilibrium when the water potential is the same in both solutions.
Difference between voluntary and involuntary movements give one example of each.
Answer: Voluntary movements are movements that are under our concious control; involuntary movements are movements that are not.
Example of Voluntary: Playing piano
Example of Involuntary: Heart beating
How does nature determine which species will survive in specific environments or when the environments change
Answer:
Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success.
Explanation:
hope this helps
A company wants to test a new dog food that is supposed to help overweight dogs lose weight. 50 dogs were chosen to try the new food and 50 other dogs were chosen to continue their normal diets. After one month, the dogs are checked to see if they lost any weight. What is the Dependent Variable?
Answer:
The dependent variable is the weight of the dogs
Explanation:
The dependent variable is the variable that is been tested during the course of an experiment. The dependent variable will usually produce different unpredictable "values" which will form the essence of the experiment. Also, the dependent variable is usually dependent/relies on the independent variable.
From this description, the dependent variable is the weight of the dogs as this is the variable that is been tested.
In an experiment that tests how
different fertilizers effect the growth of
plants, what would the INDEPENDENT
variable be?
A. the growth of the plants
B. the fertilizers
C. multiple groups with the same plant and fertilizer
D. a plant without fertilizers
Answer:
D.
Explanation:
The independent variable is the variable that goes unchanged by the others
if humans were wiped out and allowed room for a new dominant species, out of all animals listed which one would have the most potential to do so?
Answer:
the raven
Explanation:
octopus - intelligent but very antisocial with a short life span, meaning they most likely will not work with other octopuses to improve while also living in the ocean making it harder to build. (but could probably evolve to walk on land)
dolphin - smart but does not have thumbs to make tools and lives in the ocean meaning they have a disadvantage.
raven - intelligent, works with other ravens and sometimes even wolves, and has shown to make tools.
Answer:
The raven because it's ability to craft tools, social life involving hunting groups, intelligence, and wide variety of sounds (allowing potential language) give it the potential to evolve very well.
Explanation:
What types of species interactions exists in an ecosystem?
in the skeptical system, which are the two main tissues responsible for structural support in the body?
compact bone
ligaments
red bone marrow
spongy bone
yellow bone marrow
Match the items below with the correct type of supernova.
Supernovas are tremendously luminous explosions that occur in a star when it is about to die releasing huge amount of energy, particles and radiation.
What is a supernova?A supernova is an extremely bright explosion of a star which occurs when a star has reached the end of its life and after the intensity gradually dims and the star dies.
Explosions that occur in supernovas release very huge amounts of radio waves, X-rays, gamma rays and also cosmic rays.
There are two main types of supernovae; the type I and the type II supernovas.
Therefore, supernovas are tremendously luminous explosions that occur in a star when it is about to die.
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You may be excused from some lessons in this module based on your pretest score. You will still be responsible for all lesson content on the module and segment exams. Do you feel comfortable with the content in this pretest? this is for biology
Answer:
just how you feel
Explanation: they are just asking you how you feel so its what you think.
What was the lesson going over..thats what you would write about. by writing a summary on the lesson(s) you'll be able to get a better chance of answering the question... also how did you feel about the assessments and the the topic, (in your case biology).
How lysosomes would be involved in changing a caterpillar into a butterfly.
Answer:
well the caterpillar first digest it's self turning the soup into eyes, wings, antenna and other adult structures i'm sorry if i get it wrong for you
Explanation:
What molecule do plants pull from the air that is used to make sugar?
A.Oxygen
B.Nitrogen
C.ATP
D.Carbon dioxide
Answer:
carbon dioxide is what the plants take from the air to make glucose or sugar
The molecules that the plants pull from the air that is used to make sugar are carbon dioxide. The correct option is D.
What is carbon dioxide?
Carbon dioxide is a gas that is present in the atmosphere at 0.03 %. This gas is a greenhouse gas. This gas warms the environment. The chemical formula of carbon dioxide is CO₂.
Carbon dioxide is released by animals as they respire. This is the gas they expelled out in respiration. But plants absorb this gas because plants perform photosynthesis and in photosynthesis, carbon dioxide is used.
This gas is pulled from the environment to perform photosynthesis by plants. Carbon dioxide reacts with water to form glucose.
The chemical reaction of photosynthesis
[tex]\rm CO_2 + 6H_2O \rightarrow C_6H_1_2O_6 + 6O_2.[/tex]
Thus, the correct option is D. Carbon dioxide.
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The chemical equation should be written in latex.
Induced pluripotent stem cells are ?
Answer:
are a type of pluripotent stem cell that can be generated directly from a somatic cell.
Explanation:
Do you predict that salt will be able to move across the membrane?
1. Yes, because NaCl is small
2. Yes, because NaCl is ionic
3. No, because NaCl is large
4. No, because NaCl is ionic
Answer: The correct answer is
No, because NaCl is Ionic
Explanation:
NaCl can pass through the cell membrane because it is Ionic and separates into Ionic components Na+ Cl+.
Cell membrane are phospholipids bilayers and have hydrophobic tails and face inside of the cells . The fatty acids tails are non polar and only non polar substances can pass through it but salts is a polar molecules because it is an ion and cannot pass.
An illness caused by a certain virus includes fever, rash, joint pain, red eyes, and headache. The virus is transmitted to people by infected mosquitoes. Symptoms quickly occur within three to twelve days after contracting the virus. There is no vaccine for this virus. Which description best explains the reproductive cycle of this virus?
The reproductive cycle of the virus is lytic, because of the quick onset of symptoms after infection.
The reproductive cycle of virusesThe reproductive cycle of a virus is the process that is used by a virus to replicate in order to be able to cause harm to a host after invasion.
There are two types of reproductive cycles and they include:
Lytic cycle andLysogenic cycle.A virus that uses lytic reproductive cycle, has the ability to use the host cells to quickly manufacture more viruses which burst out of the cells leading to rapid onset of signs and symptoms of disease.
Therefore, the reproductive cycle of the virus is lytic, because of the quick onset of symptoms after infection.
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do plants spend the same amount of time in mitosis despite being mature or not?
Answer:
Plant and animal cells both undergo mitotic cell divisions. Their main difference is how they form the daughter cells during cytokinesis. … Plant cells don't have centrioles. Lastly, animal cells divide everywhere and all the time while plant cells divide in a specialized region called the meristems.
Beavers, large members of the rodent family in North America, are often referred to as "ecosystem/keystone engineers" by wildlife managers. Ecosystem engineers are described as animals that create, alter, or destroy a habitat. Beavers contribute to river ecosystems by bringing down old and dead trees along riverbanks. They use these trees to make their dams. Although these dams are primarily used for protection and food storage, scientists report that these dams change the surrounding environment in different ways. Given this information, in three to five sentences, describe a potential benefit that beavers contribute to the ecosystem as keystone engineers and describe a plausible impact that the removal of beavers could have on the surrounding ecosystem. (4 points)
The potential benefit that beavers contribute to the ecosystem include sources of food and habitat for some animals.
What is an Ecosystem?
This consists of all the organisms and the physical environment with which they interact.
The removal of the beavers will allow for more oxygen to be present within the ecosystem as a result of increased plant population.
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Answer:
it is A from the top
Explanation:
it on the top
A mile long stretch of beach by the freezing Atlantic Ocean includes: penguins,
leopard seals, minnows, plankton, oxygen, carbon dioxide, salt and sand. This
description can best be identified by which term?
Biome
Community
Population
Ecosystem
What happens in the light reaction of photosynthesis?
What happens in the dark reaction of photosynthesis?
What five factors affect photosynthesis and its rate? How?
Answer:
1). Photosynthesis begins with light reactions. It is during these reactions that the energy from sunlight is absorbed by the pigment chlorophyll in the thylakoid membranes of the chloroplast.
2). The dark reactions of photosynthesis occur in the stroma of the chloroplast where they utilize the products of the light reaction. In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.
3). The main factors affecting the rate of photosynthesis are light intensity, carbon dioxide concentration, and temperature.
Explanation:
Hope this helps
Sickle-cell anemia is caused by a mutation of one nucleotide in a gene. The type of mutation that causes sickle-cell anemia is known as.
Answer:
I have 2 answers. Not sure which one you were looking for.
Explanation:
1.Mutations in the HBB gene cause sickle cell disease. The HBB gene provides instructions for making one part of hemoglobin. Hemoglobin consists of four protein subunits, typically, two subunits called alpha-globin and two subunits called beta-globin. The HBB gene provides instructions for making beta-globin.
or
Sickle-cell anemia is the result of a change in a single nucleotide, and it represents just one class of mutations called point mutations.
What did the soil conservation act of 1935 call for?a. Poor farming practices and loss of farming soil. B. A national soil and water conservation program. C. A federal bureau to regulate the use of ferderal lands. D. Planting native grasses and trees instrad of crops
Answer:
planting native grasses and trees instead of crops
Explanation:
Which artery do you think is made of thicker muscle, the aorta or the pulmonary artery? why? refer back to your heart box to visualize the path of these vessels.
Transcribe the sequence below:
ATGCCATGGCATTGA
Answer:
Not sure the sequence can mean anything
Explanation:
Here is the sequence spaced out ATG CCA TGG CAT TGA
here it is translated to the mRNA sequence UAC GGU ACC GUA ACU
than a protein sequence TYR GLY THR VAL THR
Which statement is true about bacterial cells? *
O The Wells are very large
The cells have no nucleus
O They are eukaryotes
O They have organelles
Answer:
They have no nucleus.