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3 years ago

How does natural selection lead to evolution?

Biology

2 answers:

Romashka-Z-Leto [24]3 years ago

3 0

I believe that the answer is B.

OLEGan [10]3 years ago

3 0

Answer:

The answer is B. Many small changes can create a whole new species.

Explanation:

Natural selection is a strong source of speciation in living beings.

After several generations, it is possible to observe distinctive features at the level of a population. A clear example of this can be observed in humans, where some physical traits are characteristic of different regions.

If sufficient time passes, it is possible that the differences of one population are sufficient to differentiate from another similar population, creating reproductive isolation and giving rise to a new species.

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Which of the following does NOT characterize proteins?

8090 [49]

Answer:

The answer is C) They appear to be the molecular carriers of coded hereditary information.

Explanation:

Why NOT C) They appear to be the molecular carriers of coded hereditary information?

This is the job of the nucleic acids. It is composed of nucleotides which are the basic units of DNA and RNA. They carry genetic information about a certain organism.

<h3 /><h3>True of proteins:</h3>

A) They may be denatured or coagulated by heat or acidity.

Denaturation is the destruction of the protein's secondary and/or tertiary structures. The primary structure is not disrupted due to the tough peptide bonds and can only be broken down by acid. For heat denaturation, hydrogen bonds are destroyed, as in cooking of egg whites and medical equipment sterilization.

B) They have both functional and structural roles in the body.

There are many kinds of proteins that have functional and structural roles like hormones (FSH, LH), antibodies (IgA, IgM), enzymes (lipase, amylase), for storage/transport (hemoglobin, ferritin), and locomotion (actin, troponin).

D) Their function depends on their three-dimensional shape.

Just like hemoglobin, it's quaternary structure can carry 4 molecules of iron in one go. Enzymes are shaped accordingly to fit a specific substrate (lock-and-key model)

6 0

3 years ago

Could someone help me in this question? ty :)

tekilochka [14]

I think zoe because you can’t just test which one is the best it’s too broad to investigate

6 0

2 years ago

what are some advantages and disadvantages of using permanent slides as opposed to temporary slides to view tiny aquatic animals

nikitadnepr [17]

Answer:

Permanent slides ensures preservation of the body parts of the tiny aquatic animals and also also aids good visualization.Most of the exoskeleton of these tiny animals are lost during temporary slides preparation, thus loss of visualization.

Because the animals are transfixed to a point, their body parts can not be moved.

It also saves time, energy and resources spent during observation.

However,because of dehydration during preparation their natural color may be lost which may affect observation of natural features

Explanation:

3 0

3 years ago

Is pollen created in mitosis or meiosis?

vichka [17]

I believe that its meiosis but I could be wrong.

5 0

3 years ago

Decisions made by societies of the past often cause modern problems. Please select the best answer from the choices provided T F

lbvjy [14]

The answer is False.

3 0

3 years ago

Read 2 more answers