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Simora [160]
2 years ago
14

Which of the following describes molusca?

Biology
1 answer:
Naya [18.7K]2 years ago
3 0

Answer:

I belive that the answer is B

Explanation:

a and d are definately not it. Molusca sounds like a phylum name to me. Sounds very similar to mollusks.

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3 years ago
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How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
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Answer :B. By changing the shape of the enzyme's active site.

check the attachment

Explanation: This is a type of inhibition , in which a molecule binds to another part of the enzyme instead of the  active site.

On binding, it disrupts the  normal hydrogen bond and hydrophobic   interactions holding the enzyme molecule in its three dimensional shape, therefore distorting the conformation and   ACTIVE SITE of the  enzyme (changed it shape).

Since the active site is the precise location enzyme must bind with substrates for enzymatic reactions,this makes the enzyme not fit  for binding with the substrate, therefore  the efficiency  is reduced. No substrate-enzyme complex, and hence no substrate-product  complex for the release of  products, this brings down the turnover rate and eventually

<u>the rate of reaction of the enzyme</u>

Thus, the enzyme function is totally blocked, even in high concentration of the substrate,

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4 0
2 years ago
Question 10
kramer

Answer:

I don’t think the pictures were retouched. This led some people to believe Anna Anderson’s claim that she was Anastasia and survived the execution. Because its Anna whose fame as an impostor remains, despite there being several other young women with the same claim. Why did … One body was identified as the missing Anastasia and her brother. Anna appeared in the early 1920s claiming that she was Anastasia Romanov.

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2 years ago
Why would a shark need to regulate its internal salt concentration?
expeople1 [14]
Osmosis. If the cell has too much salt the cells will swell. let me know if you want me to explain.
7 0
3 years ago
What are the locomotory organs of fish?​
spin [16.1K]

Answer:

The tail and the caudal fin are the chief locomotory organs of fish and are used for rapid swimming during which tail is lashed from side to side by "alternate contraction and relaxation" of the myomeres on the two sides of the vertebral column.

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