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3 years ago

Why are enzymes needed during DNA replication?

Biology

1 answer:

masya89 [10]3 years ago

7 0

Answer:

An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.

Explanation:

An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.

Recall that DNA is a long strand with a many repeating base pairs. In order for DNA to reproduce, the base pairs must be split apart. One half of the strand is then used as a template to build a new strand of DNA.

The enzyme helicase is responsible for splitting DNA along the base pairs. Helicase moves along the DNA strand unzipping the strand just as a zipper.

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Which statement describes the term "heterozygous"? A) The alleles are the same. B) The alleles are different. C) There is no all

Oxana [17]

Answer:

B) The alleles are different

Explanation:

Hetero- different

zygous- you can best relate it to specific kind of zygote, or fertilized egg (which has two alleles)

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3 years ago

Brown eyes is dominant to light eyes. Mr. O'Ryan has blue (light) eyes. Mrs. O'Ryan is heterozygous for brown eyes. What are the

d1i1m1o1n [39]

Answer:

Brown eyes = 0.5

Blue eyes = 0.5

Explanation:

Given, B ( brown eyes ) is dominant over b ( blue/light eyes ). So,

BB = Brown

Bb = Brown

bb = blue/light

Mr. O'Ryan = blue eyes = bb

Mrs. O'Ryan = heterozygous brown eyes = Bb

Their children: Bb X bb :

B b

b Bb bb

Half of the children will have Bb genotype and brown eyes, other half will have bb genotype and blue eyes. Hence, Kellan O'Ryan has 0.5 probability of blue eyes and 0.5 probability of brown eyes.

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3 years ago

The student has a widow 's peak because of her ?

Whitepunk [10]

It’s the third one bc it’s a declined inheritance

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3 years ago

Would you ever take a trip to the Moon in SpaceX’s Dragon spacecraft that is designed for comfortable traveling through space? W

Ira Lisetskai [31]

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2 years ago

Which change of state is shown in the model?

matrenka [14]

<h2>Hey there! </h2>

<h2>The correct option is:</h2>

<h3>B. Evaporation </h3>

<h2>Explanation:</h2>

<h3>Because the molecules inside the jar are moving upwards, which shows Evaporation. </h3>

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3 years ago