help with biology pleasee

The polysaccharide that is responsible for the strong structural nature of cell walls of plants is cellulose.

The cellulose is an organic molecule that is made up of several units of glucose monomer. The cellulose which make up a large percentage of plant cell walls are composed of a network of several units of glucose monomer that are tightly linked together.

The cellulose, as well as lignin and hemicellulose, which constitutes the tensile fibers in the cell walls of plants, is the polysaccharide responsible for the strong structural nature of plant cell walls.

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Answer:

475

Explanation:

The strand is only made up of Adenine, Thymine, Cytosine and Guanine. There will be the same number of Adenine as there are Thymine and the same number of Cytosine as there are Guanine.

We know there are 425 Thymine. This means there are also 425 Adenine. Therefore, you would subtract 850 (425x2) from 1800 to find the amount of Cytosine and Guanine left, which is 950.

Out of the 950, half will be Cytosine and half Guanine. 950/2 is 475.

I think thats because small animals have small body that can hide in a safe place. Like example if small animals hide go down to the earth, and the meteorite hit the earth, they will safe down to the ground.

Not like larger animals, they can only hide up he surface and when the meteorites came, they died.

Also some small animals such as cockroaches have ability to adapt to changes.

Answer:

lots

its on cafeteria food at ur school

Explanation:

Could you be more precise?

There are over 100 types of acid.

These are a few for example:

H2SO3Sulfurous Acid

H2SO4Sulfuric Acid

H2SO2Hyposulfurous Acid

H2SO5Persulfuric Acid

H2S2O7Pyrosulfuric Acid

H2S2O5Disulfurous Acid

H2S2O4Dithionous Acid

H2S4O6Tetrathionic Acid

H2S2O2Thiosulfurous AcidH2SHydrosulfuric Acid

H2S2O8Peroxydisulfuric AcidHClO4Perchloric Acid

Answer:

D: Bb

Explanation:

Answer:

bb

Explanation:

Bro, I can't explain because anything I say says that it contains a link

actually I don't even look this up bc I already learned this so my bad

Answer:

this is assuming brown eyes are dominant

6a 9/16

b.3/16

c 3/16

d. 1/16

Explanation: there might be an easy way to calculate it but I draw it out and use the dominance and lettering and just count I used slide 5 as a starting point

to do more than this would require seeing the square on slide 1 they are referring to as it is specific to 2 parents

4. a Bb and bb

b. bb and bb

5. BBEE BBEe BbEEBbEe

BBEe BBee BbEe Bbee

BbEE BbEe bbEE bbEe

BbEe Bbee bbEe bbee

2 a Bb

b Brown hair

c. Bb and brown hair

d. blonde hair

e. BB

3. A50%

c. 50%

25%

75%

25%

C) How does the independent assortment of the two sets of homologous chromosomes increase genetic diversity?

Independent assortment is a mechanism that contributes to genetic diversity during meiosis. It refers to the random alignment and separation of homologous chromosomes during the first meiotic division (meiosis I), which leads to different combinations of chromosomes being passed on to the daughter cells.

This means that each daughter cell will have a unique combination of chromosomes. When the gametes (sperm or egg cells) produced by meiosis fuse during fertilization, they can give rise to offspring with a unique combination of genetic information, further increasing genetic diversity within a population.

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Answer: D

Explanation:

Answer:

Explanation:white moths will be spotted easier and killed and the population would drop while the dark moths population will rise

The population of white moths at the light tress will increase over time with the process of natural selection.

The trees are a light color population. Dark moths are unable to camouflage with the tress, while white moths camouflage with the trees.

The white and black moths at the tree are an example of a tree ecosystem. The moths are the target for the predators.

The process of natural selection is the evolutionary process with the survival of the fittest. The species that are able to survive in the inappropriate conditions are able to evolve.

In the tree ecosystem, the white moths are camouflaged with the trees. They will not be an easy target for predators. They will survive with the theory of natural selection.

The black moths are not camouflaged with the tree ecosystem. They are easily identified by the predators and are killed.

Thus, white moths are the fittest and with natural selection, they evolve.

Therefore, the population of white moths at the light tress will increase with natural selection.

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Answer:

having exactly the same DNA sequences, twins start accumulating genetic variation from the earliest stages of development, researchers at Iceland-based company deCODE genetics found, meaning that one twin harbors variants that aren't present in the other.

Answer:

a) 0.1 mL

b) contamination

c) clumping of colonies

d) Uneven colonies

Explanation:

In general, when performing spread plates, 0.1 mL

mL of cell suspension is added to the plate to prevent the formation of a microbial contamination

Adding more than 1 mL of cell suspension to an agar plate will result in a clumping of colonies.

Adding less than 1 mL of cell suspension to an agar plate will result in a Uneven colonies

In general, when performing spread plates, 0.1mL of cell

suspension is added to the plate to prevent the formation of a

microbial contamination.

Adding more than 1 mL of cell suspension to an agar plate will

result in a clumping of colonies. Adding less than 1 mL of cell

suspension to an agar plate will result in an uneven colony.

These contain two or more conspecific individuals living in close

association with one another.

The procedures given above must be adhered to in the

preparation of cell cultures in the laboratory.

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Answer:

C. AUG CGG GCU UAG

Explanation:

This works the same as a normal DNA strand, A=T, C=G, except for one difference. Thymine is not an mRNA base, instead it is Uracil. Therefore, if there is an A, you would typically replace it with a T, but for mRNA you will replace it with a U. Keep in mind you will still replace the T in the DNA strand with an A in the mRNA strand :)

Answer:

phenotype or trait

Explanation: if it is really cold a mouse with thicker fur (phenotype) will do better

Environmental conditions often favor one selection over another.

In the context of evolution, selection refers to the process by which certain traits or characteristics become more or less common in a population over time. This process occurs due to environmental conditions that favor certain individuals with advantageous traits, leading to their increased survival and reproduction.

For example, consider a population of birds living in a forest with two distinct color morphs: light and dark. If the forest becomes darker due to increased tree cover, the dark-colored birds might be better camouflaged and have a higher chance of surviving and reproducing. Over time, the proportion of dark-colored birds in the population would increase, as they have a selective advantage in the new environmental conditions.

Similarly, if the forest becomes lighter, the light-colored birds may become more successful in avoiding predation and finding mates. In this case, the environmental conditions would favor the light-colored birds, leading to an increase in their frequency within the population.

Therefore, the term "selection" refers to the process by which environmental conditions favor certain individuals or traits, resulting in changes in the frequency of those traits within a population over time.

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Answer:

d) the laws of independent assortment

Explanation:

just took it

Answer:

B - by comparing DNA from the blood cells with DNA from suspects!

Explanation:

DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.

A DNA sample taken from a crime scene is compared with a DNA sample from a suspect.

If the two DNA profiles are a match, then the evidence came from that suspect. (from www.genome.gov )

Hope this helps! :]

A forensics expert has obtained a sample of human blood from a crime scene, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.

DNA fingerprinting is a technique used to identify individuals based on their unique DNA profiles, and by analyzing the sequence of nucleotides in an individual's DNA, forensic scientists can create a DNA profile that is unique to that individual. So to identify the person who left the blood at the crime scene, forensic scientists would analyze the DNA in the blood sample and create a DNA profile, and then find out the criminal based on the DNA fingerprinting.

Hence, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.

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Answer:

When water moves from low concentrations of solute to high concentrations of solute, it moves from high concentrations of water to low concentrations of water.

Answer:

Due to the presence of larger vessels.

Explanation:

Due to the presence of larger vessels of hardwoods in the tree, water move faster in that tree as compared to other type of plants. in smaller plants, small vessels are present which able them to move less amount of water as compared to large trees which have large vessels. It tells us that the tree adopted the environmental changes so that's why to overcome the change, they use more water.

Answer:

The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular. A vascular plant has tissues for transporting water or sap. Nonvascular plants do not.

Answer:

C

Explanation:

It’s near the ocean

Answer:

to release compounds containing carbon into the atmosphere

Explanation:

Answer:

The second one, smooth shape is dominant and wrinkled is recessive

Explanation:

Answer:

The answer would be B

Explanation:

The wrinkly pea is recessive meaning it is less likely to pass on its traits.

Answer:

wind causes by unequal heating of the earth

Explanation:

Because,ocean currents are driven by wind, water density differences and tides.Oceanic currents discribe the movement of water from one location to another.

Hope it helps...

Answer:

Mutation is any change in DNA sequence of an organism. Mutantion can occur in any living organism including plants, animals, fungi, bacteria and protists.

Explanation:

Answer:

1) I don't know what option "B" is but with whats given the answer is D

2) For this one I can't see what option "D" is but with whats given the answer is C

3)  I can't see what option "B" is but with whats given the answer is D

4) I can't see option "D" but out of those the answer is B

Answer:

a lung disease caused by breathing in very small pieces of ash or dust

Explanation:

Answer:

a is your answer, I hope it helps!

a!!!!!ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ