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disa [49]
4 years ago
6

28. Replace Question: _______ are a type of non-living agent that insert their DNA into the genomes of cells, causing the cells

to make more copies of them.
Biology
1 answer:
Irina18 [472]4 years ago
6 0

Answer:

Virus

Explanation:

A virus is an infectious particle which is composed of the genetic material enclosed in a protein structure called capsomere.

Since the virus does not fulfil the criterion of a living thing like it has its metabolism, reproduction, growth, movement and cellular structures therefore it is considered as a non-living thing.

Since the virus does not have reproductive machinery therefore they use the DNA replication machinery of host. They use the host's machinery by integrating their genome in the genome of the host and replicate their genome. Through this mechanism, they make copies of them.

Thus, the virus is the correct answer.

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Earth has roughly surface times more atmospheric pressure than mars.
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Which magnitude would be associated with the brightest star?
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3 0
4 years ago
Colchicine is a toxin that binds to tubulin proteins and prevents microtubules from elongating. What effect might this have on d
lianna [129]

The effect Colchicine might have on dividing cells is that the duplicated chromosomes might not be able to segregate into daughter nuclei.

Colchicine is an alkaloid that attaches to tubulin and prevents it from polymerization to microtubules. As we know that Microtubules are a component of the cytoskeleton of a cell that aids in molecular mobility inside the cell.

During cell division, chromatin condenses into chromosomes, which are then connected to microtubules. The chromosomes are separated into daughter cells by microtubules.

When these cells are treated with colchicine, tubulin polymerization to microtubules may not occur, and the chromosomes containing daughter nucleic might not be separated.

Learn more about chromosomes here:

brainly.com/question/2583209?referrer=searchResults

8 0
2 years ago
Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of what
Ira Lisetskai [31]

Answer:

This question lacks options, options are:

A) ADH

B) aldosterone

C) atrial natriuretic hormone

D) oxytocin

E) prolactin

The correct answer is B.

Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of <u>aldosterone</u>.

Explanation:

The female sex hormones produced by the ovary (estrogens and progesterone) are substances that, through the blood, will carry messages to all the organs of the female genital system (uterus, tubes and ovaries) to achieve their correct function. Aldosterone concentration normally increases at the time of ovulation and remains elevated during the luteal phase of the menstrual cycle. Women present during the premenstrual phase, compared to the luteal and follicular phases, an increase in body weight, due to an increase in fluid retention, this because the menstrual cycle modulates the renin-angiotensin-aldosterone system. High levels of estrogen and progesterone in the mid-luteal phase are associated with a greater increase in adrenal and renal hormones and retention of more volume.

5 0
4 years ago
A cold transmitted by a facial tissue is an example of fomite. vehicle transmission. droplet transmission. vector. direct contac
m_a_m_a [10]

Answer:

Direct contact.

Explanation:

Since it was spread through facial tissue, physical contact is needed.

Hope this helps! :)

4 0
3 years ago
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