Question 5 (1 point) Suppose the enzymes responsible for regenerating RuBP were

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Question 5 (1 point)

Suppose the enzymes responsible for regenerating RuBP were defective. What would be the effect on the light reactions of photosynthesis and why?

Question 5 options:

the light reaction would stop due to lack of ATP

The light reactions would stop due to a lack of NADP+

The light reactions would stop as RuBP is part of the electron transport chain

The light reactions would continue as they are not connected to the Calvin cycle

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Question 6 (1 point)

In DNA are GC or AT base pairs stronger and why?

Question 6 options:

GC as they form 3 hydrogen bonds while AT forms 2

AT as they form 2 hydrogen bonds to GC pair's three

GC as guanine and cytosine are more stable molecules

AT because they are able to form covalent bonds

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Question 7 (1 point)

Lets assume a normal molecule of Pol III can copy 1,000,000 base pairs of DNA before falling off the DNA molecule. What would you expect of a mutant that can only copy 1000 bp before falling off

Question 7 options:

The mutant can only replicate chromosomes of 1000 bp or less

Pol 1 would have to be more active to remove extra RNA primers

The mutant would be unable to copy the lagging strand

The mutant would operate faster

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Question 8 (1 point)

Why are transcription and translation not linked in eukaryotes?

Question 8 options:

eukaryotic must fold outside of the nucleus

eukaryotic mRNAs must be exported from the nucleus

eukaryotic mRNAs are more difficult to translate

eukaryotes slow the process down for greater proofreading

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Question 9 (1 point)

What is typically the termination signal for transcription

Question 9 options:

A sequence of RNA that forms a hairpin

A sequence of RNA that codes for stop codon

RNA polymerase only works for a fixed length of DNA

The binding of termination proteins to the DNA

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Question 10 (1 point)

Suppose you wanted to extract all of the mRNA from a eukaryotic cell. How could you isolate only mRNA

Question 10 options:

Bind it to a primer with sequence AAAAAAAAAAAAAAAAA

Bind it to a primer with sequence ATGATGATGATGATG

Bind it to a primer with random DNA sequences

Bind it to a primer with multiple RNA stop sites

the light reaction would stop due to lack of ATP

The light reactions would stop due to a lack of NADP+

The light reactions would stop as RuBP is part of the electron transport chain

The light reactions would continue as they are not connected to the Calvin cycle

Explanation / Answer

If RUBISCO is not regenerated the light reaction would stop because of the dearth of NADP+.

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