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Volgvan
3 years ago
6

Why is the blood-testis barrier important?

Biology
1 answer:
Rasek [7]3 years ago
6 0
The correct answer is  C. Because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system. 
This is important because the organism will react defensively towards the foreign bodies and fight them instead of accept them, so this will make a big problem in the process of fertilization.
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The scientific method can best be described as a plan or set of
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The scientific method can best be described as a plan or set of procedures.

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Identical cells are produced at the end of mitosis
Sveta_85 [38]
If I’m not mistaken it’s 2

7 0
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Mammals are a large group of animals that includes humans, apes, dolphins, bears, bats, cats, and much more. Which statement can
Shkiper50 [21]

Answer:

D

Explanation:

A does not make sense neither does b c was a little tricky but it includes dolphins so d

3 0
3 years ago
What other compound must be present along with urea for the urease enzyme to break down urea?
MaRussiya [10]

Water is the compound must be present along with urea for the break down of urea.Thus, option B is correct.

<h3>What does urea break down into?</h3>

Urea and water combined together and results  into the production of carbon dioxide and ammonia with the help of urease enzyme.

Urea + water = Carbon dioxide+ ammonia

Breakdown of urea occurs in a cycle known as urea cycle and it has five important steps:

  • Formation of carbamoyl phosphate
  • Synthesis of citrulline
  • Cleavage of argininosuccinate
  • Glucogenic and ketogenic amino acids
  • Oxidation of Carbon skeleton of amino acids

Therefore,water is the compound must be present during the process of break down of urea.Thus, option B is correct.

Learn more about break down of urea here:

brainly.com/question/11486679

#SPJ4

Your question is incomplete,but most probably your full question was,

What other compound must be present along with urea for the urease enzyme to break down urea?

A.ammonia

B.water

C. pyruvic acid

D. carbon dioxide

7 0
1 year ago
(c) Based on the data in Figure 1, describe whether or how the size of the leopard population appears to have been affected by t
vfiekz [6]

Answer: 62.9%

Explanation:

Figure one is not available so I cannot answer the first part of the question.

The second part however, has the relevant information required.

The percentage of large animals eaten by lions from the total amount of biomass eaten by lions is:

= Weight of large animals / Total weight of animals eaten by lions * 100%

= 110,000 / 175,000 * 100%

= 62.9%

4 0
3 years ago
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