All categories

3 years ago

Cells such as neurons, which rarely if ever divide, can be explained as

1 answer:

3 0

G0 phase cells

The mitotic cycle of somatic, or body, cells is responsible for the production of copies of those cells. The mitotic cycle has different phases, each of which involves a different set of physiological changes to the cell. The G0 phase is described as the resting phase of a cell, where no activities relating to cell division are taking place. G0 phase cells remain in this phase their entire lives, so they do not divide. Another example of such a cell is found in red blood cells.

You might be interested in

Explain the relationship between surface area

Karolina [17]

Answer:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger.

Explanation:

6 0

3 years ago

Biomagnification is the __________________of substances,often harmful,as they move up the food chain.

gregori [183]

Answer:

build up

Explanation:

b. accumulating increased concentration

5 0

3 years ago

Seawater is more dense than fresh water. A ship moving from the Atlantic into the Great Lakes goes from seawater to fresh water.

maw [93]

Answer:

Due to the density, it should sink further down.

Explanation:

4 0

3 years ago

Read 2 more answers

All immunity is developed after birth. True False

Verizon [17]

False is your answer have a good day :)

5 0

3 years ago

Read 2 more answers

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