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3 years ago

Why does the body switch between cellular and anaerobic respiration?

1 answer:

34kurt3 years ago

7 0

<span>The body needs oxygen for cellular respiration. When doing strenuous activity, such as lifting weights, the mitochondria cannot get enough oxygen. Without oxygen to act as an electron receptor, the body creates lactic acid to "reset" coenzymes to continue respiration.</span>

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Which statement correctly describes how nitrogen in the soil returns to the atmosphere?

Naya [18.7K]

The answer is "Decomposers directly convert ammonium into nitrogen gas".

Living organisms such as plants and animals contains nitrogen in the form of the amino acids and proteins. When they die, the nitrogen in the form of ammonium is decomposed by microorganisms. It is then converted into nitrites and then to nitrates by nitrifying bacteria. The denitrifying bacteria then converts nitrates into nitrogen.

4 0

3 years ago

Read 2 more answers

3) The most common form of color-blindness - red/green color-blindness - is an X-linked recessive trait affecting around 8% of t

Aleonysh [2.5K]

Answer:

0.08, because for an X-linked trait the genotype frequencies among males are the same as the allele frequencies. Therefore, you would expect about q2 = 0.0064 (or 0.64%) of the female population to be affected and 2pq =0.147 (or 14.7%) of the female population to be carriers.

Explanation:

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4 years ago

Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the stat

Ilya [14]

Answer:

C. Exocytosis uses transport vesicles to export materials from the cell

Explanation:

Exocytosis is the reverse process of endocytosis including the expulsion of the material that is membrane -encapsulated (material is packaged in the vesicles ) inside the cell out of the cell. It has following steps :

1) The cell forms a vesicle around a material which is to be expelled.

2) The vesicle is transported to the cell membrane.

3) The vesicle membrane fuses with the cell membrane and releases the contents from the cell.

Hence option C. Exocytosis uses transport vesicles to export materials from the cell IS THE RIGHT OPTION.

7 0

3 years ago

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Explain the importance of independent and dependent variables in an experiment.

ddd [48]

Answer: Independent variable is what is being modified, it is important to compare it to your control group, (which is the original).

Dependent variable is what is being measured, to compare it to the control group to see if your hypothesis works or not.

Explanation: Here's a(n) example:

Bob wanted to take a mint with a mint drop, and he wanted to measure if it can make his breath fresher, but he also wanted to take it with a regular mint to see which is the freshest breath.

Independent variable: Mint drop.

Dependent Variable: Breath (To see if it is going to change with a mint drop.)

Control Group- Regular mint.

6 0

3 years ago

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At what depth(km) would a rock experience temperature of 5500C?

kow [346]

Explanation:

A rock would experience a temperature of 5500°C is about the core which is at a depth of 220km.

But let us use the earth's geothermal gradient to solve this problem.

The geothermal gradient is the rate at which temperature is increasing with depth.

The geothermal gradient 25°C/km

At 5500°C,

5500°C x $\frac{1}{25}$ $\frac{k}{C}$ = 220km

But this is not so in nature, there are other heat sources that contributes to increasing temperature with depth such as radioactive heat and frictional heat.

learn more:

Mantle brainly.com/question/10758534

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3 years ago