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Mashutka [201]
4 years ago
5

Why are nitrogen-fixing bacteria so important to other organisms?

Biology
1 answer:
givi [52]4 years ago
3 0
Nitrogen-fixing bacteria change nitrogen into a form of soluble nitrates that plants can use ...the air is 80% nitrogen but it is in N2 form which plants cannot use
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What strengthens and helps to maintain the fluid nature of a cell regardless of temperature?
Amanda [17]

Cholesterol in Cell membrane  strengthens and helps to maintain the fluid nature of a cell regardless of temperature

<u>Explanation:</u>

All organisms are made up of one or more cells. Each cell is protected or differentiated by a covering called as the cell membrane. Phospholipids are the basic structure of the cell membrane. Cholesterol prevents the loss of fluid from phospholipids.  

Cell membrane has a lipid layer and cholesterol which is placed between the phospholipids to maintain the fluid nature of the cell under different temperature. Cholesterol prevents the cell from solidifying and helps maintain the fluid. Cholesterol actually acts as a buffer between different temperatures.

3 0
3 years ago
Amenorrhea may occur among women at fat levels as high as:
Sophie [7]
The correct answer is "16%"

16% of body fat in women is considered as low as normal body fat levels in women normally ranges from 22% to 25%. In cases of low body fat levels (i.e. in athletic women), there will be relative amenorrhea because of the suppression of the follicle-stimulating hormone and the luteinizing hormone leading to a type of amenorrhea called athletic amenorrhea.
5 0
3 years ago
If the two traits that Mendel looked at in his dihybrid cross of smooth yellow peas with wrinkled green peas had been controlled
nalin [4]

Answer:

c. Would have deviated from the 9:3:3:1 phenotypic ratio

Explanation:

<em>If two genes are linked together on the same chromosome, the phenotype of the F2 generation would have deviated from 9:3:3:1.</em>

Two genes whose loci are close on the same chromosome are said to be linked. Linked genes have higher frequency of recombination than genes that are not linked.

<u>Hence, while genes that are not linked assort independently to produce 9:3:3:1 phenotypic ratio at F2, linked genes do not assort independently and the higher frequency of recombination ensures that they standard phenotypic ratio is deviated from.</u>

The correct option is c.

3 0
3 years ago
What is water that is stored below the surface?
lana [24]
The answer is "Groundwater"
8 0
3 years ago
Crossing-over can occur during meiosis I in:
m_a_m_a [10]

Answer:

b. metaphase l.

3 0
3 years ago
Read 2 more answers
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