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GaryK [48]
3 years ago
15

Do humans need photosynthesis to survive?

Biology
1 answer:
allsm [11]3 years ago
5 0
Yes. Indirectly, through plants. Without plants using photosynthesis, and therefore, creating oxygen, we wouldn't have enough breathable air.

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A potential source of confusion in constructing a phylogeny tree is similarity between organisms that is due to:.
jok3333 [9.3K]

 convergent evolution - called analogy

a potential source of confusion in constructing a phylogeny is similarity between organisms that is due to convergent evolution - called analogy - rather than to shared ancestry. thus for mammals, the backbone is a shared ancestral character, a character that originated in an ancestor of the taxon

6 0
2 years ago
Nucleotides can be radiolabeled before they are incorporated into newly synthesized DNA and, therefore, can be assayed to track
adoni [48]

Answer:

e. infection causes lymphocytes to divide more rapidly

Explanation:

The cell cycle includes interphase and M phase which in turn together produce daughter cells from the existing parent cells. DNA replication occurs during the S phase of interphase to ensure that the daughter cells obtain the identical DNA present in the parent cell.

Lymphocytes are one of the types of white blood cells and are involved in cell-mediated and antibody-mediated immune responses. These cells are present in the blood as well as in lymphatic tissues. During the given experiment, lymphocytes exhibited a higher rate of incorporation of labeled nucleotide after the introduction of a pathogen in the culture. This suggests that the introduction of pathogen triggered the cell division in lymphocytes to produce more lymphocytes to fight the infection.

7 0
3 years ago
The source of blood carried to capillaries in the myocardium would be the ________. A. coronary veins B. fossa ovalis C. coronar
lilavasa [31]

Answer:

The source of blood carried to capillaries in the myocardium would be the coronary arteries - C.

3 0
3 years ago
Read 2 more answers
The mitotic spindle consists of two types of microtubules: kinetochore microtubules and nonkinetochore microtubules. In animal c
Blababa [14]

Answer:

The correct answer will be

1. Lengthen

2. Lengthen, shortens

3. Disassemble

Explanation:

There are three types of microtubules present during cell division: kinetochore, aster and polar microtubules.  

1. During prophase: all types of microtubules grow out at their positive(+) ends which functions to pull and push the sister chromatids apart towards opposite poles so they lengthen.

2. During anaphase : non-kinetochore microtubules- polar microtubules polymerization takes place at their (+) ends which causes the spindle fibres to move apart  while kinetochore microtubules which have been attached to the kinetochores of chromosomes shorten at their (+) ends and  motor proteins travel to (-) end because of which sister chromatids move towards the spindle poles.

3. During telophase: non-kinetochore microtubules depolymerize or disassembles.

Thus, 1. Lengthen, 2. Lengthen, shortens and 3. Disassemble are the correct options.

7 0
3 years ago
How is the excess energy of a lipid stored?
svp [43]

Answer:

<u>(D) As a fat.</u>

Explanation:

<u>Lipids and fat are related to each other. Excess lipids are always going to end up as just your fat in the body sitting there unless you do some physical activity to burn that fat off by exercise.</u>

* It cannot be sugar as it relates to carbohydrates. This gives immediate-bursts of energy.

* It cannot be enzyme as it create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.

* It cannot be protein as it relates to amino acid. This is for growth and development of the body.

7 0
3 years ago
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