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vladimir2022 [97]
3 years ago
14

The universe has existed for approximately

Biology
2 answers:
Marysya12 [62]3 years ago
5 0
I think the answer is 13.7 billion years probably 
S_A_V [24]3 years ago
4 0
I believe the universe is 13.8 billion years old. Possibly longer, or possibly shorter. Correct me if I'm wrong. 
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In prokaryotes, functionally related genes are usually clustered in a single operon. what has been found to be the case in eukar
Andre45 [30]
Genes in eukaryotes are dispersed and not clustered onto a single operon
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2 years ago
Select the correct answer.
Vinil7 [7]

Answer: A mutualistic and A a decrease in the number of corals, so buy coral to help the local economy

Explanation:

3 0
3 years ago
How does the carrying capacity of the ecosystem for the white footed mouse respond to the changes in the amount of parasites? Co
9966 [12]

Answer:

See the answer below

Explanation:

<em>The carrying capacity of the ecosystem for the white-footed mouse reduced in response to the changes in the amount of worm infected mice in the population.</em>

The carrying capacity of an ecosystem for a particular population of organisms is the maximum number of organisms the ecosystem can support based on the resources it has.

<u>The ideal carrying capacity of the ecosystem for the white-footed mouse oscillates between 36 to 40 in graph 1. The carrying capacity range reduced in graph 2 from 36 - 40 to 30 - 36 as a result of changes made to the number of mice infected with parasitic worms in the population of the animal. </u>

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3 0
3 years ago
Which of the following statements about excision repair is correct?
maxonik [38]

Answer:

a. True, b. False, c.True, d. True

Explanation:

a. Base excision repair is started by a DNA glycosylase  that recognizes the changes and removes the altered base by cleavage of the glycosidic bond binding the base and the deoxyribose sugar together.

b. Nucleotide excision repair works by a cut-and patch mechanism that removes their heavy lesions, including pyrimidine dimers and nucleotides . Endonucleases are responsible for the lesion of the damaged strand.

c. Nucleotide excision repair  is initiated by the proteins namely UvrA, UvrC, and UvrB in Escherichia coli.

-UvrD (helicase II) later removes the damaged strand

-DNA polymerase I (PolI) fills in the resulting gap.

d. DNA glycolases removes the damaged nitrogenous base.

-It leaves the sugar-phosphate backbone intact and thus creating an  apurinic/apyrimidinic site, which is commonly referred to as an AP site.

e. Xeroderma pigmentosum complementation group A(XPA)

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4 0
3 years ago
What happens at the end of the transcription process?
Goshia [24]

Answer:

C) DNA produces messenger RNA, also called mRNA.

Explanation:

During transcription DNA is used as a template to make RNA. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. Translation reads the genetic code in mRNA and makes a protein.

5 0
3 years ago
Read 2 more answers
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