Answer:
The gradualism model depicts evolution as a slow steady process in which organisms change and develop slowly over time. In contrast, the punctuated equilibrium model depicts evolution as long periods of no evolutionary change followed by rapid periods of change.
Explanation:
Answer:
The gradualism model depicts evolution as a slow steady process in which organisms change and develop slowly over time. In contrast, the punctuated equilibrium model depicts evolution as long periods of no evolutionary change followed by rapid periods of change.
Explanation:
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A student wanted to find out more about the cell cycle.
The student made a slide of an onion root tip.
She counted the number of cells in each stage of the cell cycle in one field of view.
The table below shows the results.
UNDAN
Stages in the cell cycle
Stage 1 Stage 2 Stage 3 Stage 4
Non-dividing cells
Total
Number of cell
20
S
9
9
4
2.
2
1
36
Each stage of the cell cycle takes a different amount of time.
Which stage is the fastest in the cell cycle?
Answer:
ask ya momma, duh duh dummy
Explanation:
do ya own work
Which process, mitosis to meiosis, creates genetically identical cells?.
Answer:
mitosis
Explanation:
The result of mitosis is two identical daughter cells, genetically identical to the original cell, all having 2N chromosomes.
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We used a lonza electrophoresis device to study the dna methods in our lab. What part of the electrophoresis set up is represented by a? [5]
The image to determine the 'component a' is not found here, but the electrophoresis device is composed of an agar/polyacrylamide gel, a chamber and poles (cathode and anode).
What is electrophoresis?Electrophoresis is a device used in the laboratory to separate biomolecules depending on their charge and mass.
The electrophoresis device consists of an agar/polyacrylamide gel, a chamber, and two poles: cathode (positive) and anode (negative).
Electrophoresis is very useful to separate DNA molecules, which migrate to the positive pole due to their negative charge.
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1) Water is one of the required reactants for photosynthesis. It provides electrons that are energized by sunlight and used to make energy carriers like ATP. Where do plants get the water they need for
photosynthesis?
Answer: Plants get water from the soil their roots are embedded in.
Explanation: Photosynthesis can be defined as the process by which the the autotrophs make food with the help of carbon dioxide and water.Water provides electrons,these electrons are energized by sunlight and used to make ATP.The plants get water from the soil. The water in the soil is absorbed by the roots of the plant that is transported to the leaves for photosynthesis.hence, the answer is soil.
Scientists have studied the return of plant life on Mount St. Helens ever since the volcano erupted in
1980. Wildflowers began colonizing the area, followed by shrubs and small trees. Scientists predict
that it will likely take hundreds of years before the area returns to a forest dominated by fir and
hemlock trees. These changes are an example of:
a. humans degrading an ecosystem by removing wildflowers
b. the loss of genetic variation in a plant species
C. the growth of a forest through ecological succession
d. the biological evolution of wildflowers, shrubs, and trees
Answer:
C.
The ecosystem there will definitely go through ecological succession by which the structure of the flora there will evolve over time into forests.
The blank the temperature of an object the lower it’s thermal energy
Answer:. An abject with a higher temperature always has greater thermal energy than an object with a lower temperature
Explanation:
What is one possible result of a mutation within a start codon? A stop codon?
The result of a mutation within a start codon is the non-start of the protein translation, whereas a mutation in the stop codon will long the length of the protein.
What are transcription and translation?Transcription refers to the process by which a fragment of DNA is used as a template to create an RNA molecule, usually a messenger RNA.
Subsequently, this mRNA sequence can be used to create a protein by a process called translation.
The triplets of nucleotides (codons) in the mRNA are read by the ribosomes during translation, thereby a mutation in the start codon would produce a nonfunctional mRNA.
Moreover, a mutation in the stop codon will long the length of the resulting protein sequence.
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An animal is born with a random mutation that results in larger than normal ears for its species. As a result, the animal is able to hunt both small and large prey.
How can this mutation be best described?
vive increases
What’s the answer
You already selected it! It's a beneficial effect since the animal's ability to survive increases! :)
If a substitution of one nitrogen base for another nitrogen base occurs in this change has no effect on amino acid being called for this would be known as a
Answer:
Point mutation
Explanation:
Since it does not alter the amino acid, it would be a point mutation (unless if it did change the amino acid, it would be a frameshift mutation).
write the difference between
a.Soil formation and Soil erosion
b.Soil pollution and Soil profile
a.
In soil erosion, the soil is carried away from by the wind or water from the top layer of the ground. Soil formation is making soil. It can be by the deposition of the soil from water or wind
What evidence will you look for during this experiment to help you determine the best concentration of saline for your patient?
(principle of biomedical science, activity 3.2.2.)
To help you determine the best saline concentration for your patient, it is necessary to know the dilution factor.
How to find the dilution factor?You can identify a solution dilution by the amount of solute in the total volume, expressed as a ratio. For example, a chemical substance can be prepared in a 1/10 (1:10) dilution of alcohol, indicating that a 10mL vial contains 1mL of the substance (solute) and 9mL of alcohol (diluent).
With this information, we can conclude that to help you determine the best saline concentration for your patient, you need to know the dilution factor.
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The best concentration of saline would be the one that does not result in a change in the cells' mass.
Why is the coral snake venomous?
Answer:
Coral snake bites can be extremely painful and can cause muscular paralysis. The coral snake's venom is one of the most potent venoms in the animal world because it contains powerful neurotoxins. The neurotoxins are responsible for the rapid paralysis and respiratory failure in the coral snake's smaller prey.
Explanation:
Which of the following statements best explains the pattern seen on the gel with regard to the size and charge of the molecules? Circle all that are correct.
Molecules A and B are positively charged, and molecule A is smaller than molecule B.
Molecules A and B are negatively charged, and molecule A is smaller than molecule B.
Molecules C and D are positively charged, and molecule C is larger than Molecule D.
Molecules C and D are negatively charged, and molecule C is smaller than Molecule D.
The following statement best explain the pattern of seen on the gel electrophoresis.
Molecules A and B are positively charged, and molecule A is smaller than moleculeWhat is gel electrophoresis?Gel electrophoresis is a laboratory technique that is used to separate combinations of DNA, RNA, or proteins base on their molecular size. In gel electrophoresis, the molecules to be separated are put and push forward by an electrical field through gel that that have small pores.
Therefore, The following statement best explain the pattern of seen on the gel electrophoresis.
Molecules A and B are positively charged, and molecule A is smaller than molecule.Learn more about gel electrophoresis here.
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The _____ theory is the theory of color vision that suggests three types of cones in the retina each make a maximal chemical response to one of three colors: blue, green, or red.
Answer:
It's the Trichromatic theory
Explanation:
The term used for all floating and drifting organisms in the sea is:
Answer: Plankton
Explanation:
Plankto ( drufter or wanderer ) is carried by tides and currents
Which cell wall is the furthest form the plasma membrane in plants
Answer:
Below
Explanation:
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Cell wall
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Outermost layer of the cell wall is
(A)Plasmalemma
(B)Secondary wall
(C)Middle lamella
(D)Primary wall
VerifiedVerified
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Hint: The wall which is present at the outermost of the cell wall acts as a glue between the different cells. . The secondary wall is not present in every cell, it is present in few cells that alter the growth of the primary wall.
Complete answer:
A cell wall is an outer structural layer present in only some types of cells, just outside the cell membrane. It is usually tough, flexible, and sometimes rigid. The cell wall is mostly composed of two layers and sometimes three layers too. The layers of the Cell wall are as follows-
- The primary cell wall is generally a flexible thin, and an extensible layer formed while the cell is growing i.e not fully developed. It is usually made up of cellulose and it is often permeable too.
-The middle lamella, a layer rich in pectins. It is the outermost layer that forms the interface between adjacent plant cells and glues them together.
-The secondary cell wall, if present, is a thick layer formed inside the primary cell wall after the cell is mature. it's not found in all cell types.
Additional Information: The cell wall is majorly composed of the cellulose microfibrils that are linked via hemicellulosic tethers to form the cellulose-hemicellulose network, which is embedded in the pectin matrix. The most common hemicellulose present in the primary cell wall is xyloglucan.
The outer part of the primary cell wall of the plant epidermis is mostly covered with the cutin and wax, forming a permeability barrier known as the plant cuticle.
Secondary cell walls contain a wide range of additional compounds that helps to enhance and modify their mechanical properties and permeability. The major polymers that make up wood (largely secondary cell walls) include cellulose, 35-50% .xylan, 20-35%, a type of hemicellulose, and lignin, 10-25%.
The cell wall which is the farthest from the plasma membrane in plants is the primary cell wall.
What do you mean by Cell wall?A Cell wall may be defined as a specialized form of the extracellular matrix that surrounds every cell of a plant. It is made up of cellulose.
The primary cell wall is the outermost cell wall in the plants, while the secondary cell wall is the innermost cell wall in the plant cell.
The secondary cell wall is located near the plasma membrane, while the primary cell wall is located farthest from the plasma membrane.
Therefore, the cell wall which is the farthest from the plasma membrane in plants is the primary cell wall.
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Which statements about eclipses are true? check all that apply.
A total lunar eclipse has a reddish colour, The moon moves between Earth and the Sun during a solar eclipse, and A lunar eclipse occurs during a full moon.
How was the eclipse discovered?Scientists have examined eclipses since age-old times. Aristotle observed that the Earth's shadow has a circular form as it moves across the moon. He declared that this must mean the Earth was round.
Thus, the above-mentioned statements about the eclipses are true.
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The broadest taxonomic group for classifying living organisms is the.
Answer: kingdom
Explanation: The broadest category of the organism in biological taxonomy is a kingdom. Each unit or category of classification is termed as a taxon. It represents a rank.
Plants are ? They make their own food.
Animals are? They consume other organisms for food
Answer:
Plants are producers.
Animals are consumers.
Earthquakes also produce transverse waves that move more slowly than the p-waves. These
waves are called secondary waves, or s-waves. If the wavelength of a s-wave is 2.3 x104 m, and
its speed is 4.5 km/s, what is the frequency?
The frequency of the wave is 0.196 Hz
Speed of a waveThe speed of a wave is given by v = fλ where
f = frequency and λ = wavelengthFrequency of the waveMaking f subject of the formula, we have
f = v/λ
Since
v = speed of wave = 4.5 km/s = 4.5 × 10³ m/s and λ = wavelength = 2.3 × 10⁴ m.Substituting the values pof the variables into the equation, we have
f = v/λ
f = 4.5 × 10³ m/s ÷ 2.3 × 10⁴ m.
f = 1.957 × 10⁻¹ Hz
f = 0.1957 Hz
f ≅ 0.196 Hz
So, the frequency of the wave is 0.196 Hz
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In an area of East Texas, the most intense competition would most likely occur between white-tailed deer and
A. brown bears
B. squirrels
C. other white-tailed deer
D. coyotes
Given what we know, we can confirm that the most intense competition would most likely occur between white-tailed deer and other white-tailed deer.
Why would white-tailed deer most likely compete with themselves?This has to do with food sources. Of the many animals listed, none of them share a food source with the white-tailed deer. The deer are herbivores that feed primarily on grass and shrubs. The bears and coyotes are carnivores that feed on other animals such as the deer themselves. While squirrels are herbivores but do not compete with the deer for food.
Therefore, given that other deer are the only animals listed that are after the same food source, we can confirm that the most intense competition would most likely occur between white-tailed deer and other white-tailed deer.
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Answer:
c
Explanation:
just took it
What role do the proteins in a virus’s outer coat play in the invasion of a host cell?
Answer:
They fit the proteins on the surface of the host cell.
Explanation:
The proteins in a virus's outer coat play a significant role in the attachment with the host cells and invade the host body.
What do you mean by Virus?A Virus may be defined as a microorganism that infects cells and may cause diseases.
The outer coat of the virus consists majorly of spike proteins that attach to the host cells and enter the body through the process of endocytosis.
Therefore, the proteins in a virus's outer coat play a significant role in the attachment with the host cells and invade the host body.
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All of the following are rivers in the fertile crescent except for the _____.tigrisnilejordaneuphrates
Match the following in order from smallest (1) to largest (6)
Answer: biosphere, biome, ecosystem, community, population, and individual
The correct order from smallest to largest is the following:
Individual-population-community-ecosystem-biome-biosphere.
What is a biosphere?A biosphere is a large ecosystem in which both biotic and abiotic organism live.
An ecosystem is an area where plants, animals, and all other factors live together.
There are different types of ecosystem are present in a biosphere.
Thus, the correct order is
Individual-population-community-ecosystem-biome-biosphere.
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Why does the moon have craters in it?
Answer:
Because the Earth has an atmosphere, the Moon has more craters than the Earth. While we sweep up a lot more things because of our higher gravity, the majority of it burns up on entrance and never reaches the earth. Earth also possesses liquid water. This is significant in two ways: first, most things that strike water do not create a crater, and second, water erodes previous craters.
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Which of the following statements about prokaryotic cells is correct?
They reproduce ase xually through a form of cell division called binary fission.
They contain multiple chromosomes floating in the cytoplasm.
They have a single DNA strand within a membrane-bound nucleus.
They reproduce s exually by exchanging genetic information during conjugation.
Answer:
Answer is here : according to this you can right ur ans
Answer:
the answer would be A
Explanation:
prokaryotic cells reproduce ase.xually through a form of cell division called binary fission'
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This time period allowed for great advancements in technology and human health but it also led to many environmental problems. 5c
Group of answer choices
agricultural revolution
american revolution
industrial revolution
paleolithic era
Answer:
C. Industrial Revolution
Explanation:
Took the test ;)
Also, the new machines in the industrial revolution helped human health and of course, advanced technology but the machines and the mining harmed the environment.
What is yhe role of decomposers in an ecosystem?
Question 1
the biological classification of organisms is called taxonomy. based on your own investigation, discuss
the importance of taxonomy in biological research.
Answer:
It helps to ascertain the number of living beings on earth.
Explanation:
More than one million of species of plants and animals have been discovered and classified so far. It aims to classify the living organisms. Millions of organisms are classified scientifically in categories, which helps to have a better understanding.
Can u help me
I need
Answer:
the first one would be DNA replication.
the second one would be Segregation
the third is Cytokinesis
and the last should be Binary Fission