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3 years ago

What happens when the cell copies its chromosomes

Biology

2 answers:

grin007 [14]3 years ago

7 0

friend we studied in cell cycle that it completes in two steps.

1) Inter phase ( G1, Gs, G2 phases)

2) division phase ( Mitiosis and meosis)

* G s phase;

during G s phase cell continous start increasing in size also in this phase cell replicates it's chromosomes. and the centrosomes are divided into centrioles for spindling.

VMariaS [17]3 years ago

6 0

During mitosis, the chromosome copies separate the nucleus divides and the cell divides. This produces identical two cells called daughter cells. The main purpose of mitosis is for growth and to replace worn out cells.

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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)

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3 years ago

What is the answer for this question please help

Nezavi [6.7K]

The plant belongs to the group Angiosperm. Vascular plants with seeds could be cycads, Gingko, conifers, or angiosperms. Among those groups, only angiosperms have flowers.
The plant they found have colored, scented flowers which suggests that it could be pollinated by insects or birds. Colored flowers attract birds and insects. Color serves as a guiding mark. Talking of scent, it does not attract bird, but attracts insects. It also serves as the guiding mark.

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3 years ago

What is an anthers reproductive function? PLEASE GIVE A WELL WRITTEN ANSWER

mixas84 [53]

All other organs, ducts, and glands in the reproductive system are considered secondary, or accessory, reproductive organs. These structures transport and sustain the gametes and nature the developing offspring.
Hope this helps!

3 0

2 years ago

Read 2 more answers

13. Explain why a characteristic which helps an animal to live longer will generally tend to become more

ivolga24 [154]

Answer:

Since it will help the individual live longer, there is a greater chance that it will reproduce than those with lesser favorable traits. Thus the next generation will resemble the parents with the favorable triat more.

Explanation:

Hope this help

plz mark brainliest

Have a nice day!!!!!

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3 years ago

Which process is apart of the water cycle?

maxonik [38]

Answer and Explanation:

There are various processes that are part of the water cycle:

- Precipitation: any kind of product that falls from the clouds

- Condensation: when a gas turns into a liquid

- Evaporation: when a liquid turns into a gas

- Transpiration: the evaporation of water from plants' leaves

- Runoff: the water that drains down from a source

Hope this helps!

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3 years ago