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Evgen [1.6K]
3 years ago
12

When did the dinosaurs die?

Biology
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

65 million years ago

Explanation:

At the end of the Cretaceous Period. Dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions.

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In eukaryotes, it exists slowly because the pre- mRNA exists first synthesized in the nucleus and after splicing, the mature mRNA arrives in the cytoplasm for translation.

Therefore, the correct answer is option B. In prokaryotes, DNA is stored in the cytoplasm.

<h3>Why protein synthesis exists different in prokaryotes and eukaryotes? </h3>

The genetic material DNA in prokaryotes forms a cluster in one kind of cytoplasm. This exists named the nucleoid. This exists because they don't contain a well-structured nucleus with a nuclear membrane.

Due to this, the method of transcription in prokaryotes takes place in the cytoplasm, constituting a polycistronic mRNA. This mRNA later experiences translation to contain any number of proteins.

The method of protein synthesis exists faster in prokaryotes as the whole procedure takes place in the cytoplasm.

In eukaryotes, it exists slowly because the pre- mRNA exists first synthesized in the nucleus and after splicing, the mature mRNA arrives in the cytoplasm for translation.

Therefore, the correct answer is option B. In prokaryotes, DNA is stored in the cytoplasm.

To learn more about prokaryotes refer to:

brainly.com/question/1288013

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The complete question is:

Why is protein synthesis different in prokaryotes and eukaryotes?

A. In prokaryotes, DNA is a strand instead of a circle

B. In prokaryotes, DNA is stored in the cytoplasm

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Answer:

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⁺˚*・༓☾✧.* ☽༓・*˚⁺‧

The 3 major common features of all cells are :-

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꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐

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