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ale4655 [162]
3 years ago
5

Dimethylallyl pyrophosphate serves as the starting point for the biosynthesis of numerous compunds of great importance , includi

ng cholestrol and the anti cancer drug tao. describe the first step in the reaction
Biology
2 answers:
Ratling [72]3 years ago
6 0

Ou tof the following given choices;

<span>a.       </span>elimination

<span>b.      </span>SN2 substitution

<span>c.       </span>Dissociation

<span>d.      </span>None of the above

The answer is B. In SN2 substitution, the leaving group is attached to a primary carbon. This is one of the SN reaction of nucleophilic substitution on dimethylallyl pyrophosphate. The other SN1 reaction, which is the more probable reaction because it's more stable.






Gnesinka [82]3 years ago
5 0

Explanation:

Hello!

Let's solve this!

In the biosynthesis process of compounds of great importance, the first step for dimethylalkyl pyrophosphate is the nucleophilic substitution.

In the nucleophilic substitution, it happens that a nucleophilic group, which has electrons, replaces another group called electrophilic which lacks electrons.

Consequently, the nucleophilic group replaces the electrophilic group.

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julsineya [31]

Because they are reproductive organs of a plant

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How does the recesive sickle-cell allele stay in the gene pool
Zina [86]

Answer:

Because natural selection selects for it. Thus it persists.

Explanation:

You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.

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What is your favorite animal and why
Gre4nikov [31]

Answer:

My favorite animal is a cheetah. I have three reasons of liking the cheetah with consists of these fine abilities/skills/cool things. I like how the cheetah has a really pretty coat of spots and speckled with really makes it stand out and look different. I also like that the cheetah is lightning fast, but it's sad it can only run 60-70 miles per hour for a short period of time. I Also like that cheetahs can be in zoos and also can be trained, petted, and can also (rarely) have babies. Cheetahs need to be saved because they are starting to get really rare and endangered.

Explanation:

#SaveTheCheetahs

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3 0
2 years ago
An exocrine gland that has an unbranched duct would be classified as a __________.
Firdavs [7]

Answer:

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Explanation:

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Exocrine glands can either be branched or Unbranched based on the arrangement.

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6 0
3 years ago
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Wh
Molodets [167]

Options for part A are as follows:

A) A mutation in the operator sequence

B) A mutation in the lac-Z gene

C) A mutation in the lac-Y gene

D) A super repressor mutation

Answer:

The correct answer:

Part a - A mutation in the operator sequence

Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part C. true.

Explanation:

part a:

If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.

part b:

The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part c:

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4 0
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