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Question 17 (1 point) In eukaryotes, precursor mRNA (pre-mRNA) molecules processed

Question : Question 17 (1 point) In eukaryotes, precursor mRNA (pre-mRNA) molecules processed : 345277

Question 17 (1 point)

In eukaryotes, precursor mRNA (pre-mRNA) molecules are processed in the

Question 17 options:

Ribsomes.

Golgi bodies.

Cytoplasm.

Nucleus.

All of the above

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Question 18 (1 point)

Introns are sequences within a gene that do not get transcribed.

Question 18 options:

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Question 19 (1 point)

Imagine a eukaryotic gene called Bicycle. Exon 1 of this gene encodes almost the entire Bicycle protein except for the Brake domain. Exon 2 encodes a domain called Disc-brake. Exon 3 encodes a domain called V-brake. In a process called alternative splicing, two mature transcripts are produced: one containing Exon 1 and Exon 2, and another one containing Exon 1 and Exon 3. What is the purpose of such alternative splicing?

Question 19 options:

To make sure that the Bicycle protein has no Brake domain

To make sure that the Bicycle protein has a Disc-brake domain on the N- terminus and a V-brake domain on the C-terminus

To make sure that the Bicycle protein comes in two forms: one with a Disc-brake domain, and one with a V-brake domain

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Question 20 (1 point)

The poly(A) tail of an mRNA

Question 20 options:

helps transport the mature mRNA to the cytoplasm.

keeps the coding sequence from being degraded.

is not coded for in the DNA template.

is important for initiation of translation.

all of the above.

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Question 21 (1 point)

In _________________, mRNA transcripts begin to be translated even before the mRNA is completely synthesized.

Question 21 options:

Prokaryotes

Eukaryotes

Both prokaryotes and eukaryotes

Solution
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Biology 1 Year Ago 12 Views
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