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Korolek [52]
3 years ago
6

What is a fossil? Give the best definition.

Biology
2 answers:
Ugo [173]3 years ago
7 0

Answer:

B

Explanation:

Fossils are ancient sometimes hidden treasures... remains of deceased beings or things that decayed over a period of time.

aivan3 [116]3 years ago
5 0
D is the correct answer
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The normal shape of an enzyme is as shown in structure A. If the enzyme's shape changes to that shown in structure B, what are t
Varvara68 [4.7K]

Answer:

There is no image showing the shape of an enzyme, however, the question can still be answered based on basic understanding. The answers are;

- Less binding of substrate

- won't follow the lock-and-key pattern of enzyme binding

Explanation:

An enzyme is a biological catalyst that regulates the rate of chemical reactions in living systems. Enzymes are proteinous in nature and every protein is made up of an amino acid sequence. The amino acid sequence forms a three-dimensional shape that determines the functionality of the enzyme.

Enzymes catalyze reactions by binding to their substrates in a lock and key pattern. This makes enzymes substrate-specific. If the enzyme's normal shape changes, the following will occur:

- Less binding of substrate

- won't follow the lock-and-key pattern of enzyme binding.

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Explanation:

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The answer is C or B.

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