1. SAT flashback...Pick the words from the list share the same relationship as t

Question

1. SAT flashback...Pick the words from the list share the same relationship as the words in the folowing sentence: "Start Codon" is to "Ribosome" as ______ is to ________.

Select one:

a. Promoter, DNA polymerase

b. Primase, RNA polymerase

c. Promoter, RNA polymerase

d. origin of replication, RNA polymerase

e. Primase, DNA polymerase

2.

If the following RNA molecule were to undergo translation by a ribosome, how many amino acids would make up the resulting protein?

mRNA 5'-CUUGAUAUGGUGGUACCCUGGAAAUAAGUG-OH 3'

3.

Which of the following enzymes can break H-bonds? (You may mark more than one answer.)

Select one or more:

a. Helicase

b. RNA polymerase

c. DNA ligase

d. DNA polymerase

Explanation / Answer

Answer1: Option C
Ribosome binds to the start codon on the mRNA, likewise RNA polymerase binds to promoter to start transcription.

Answer 2:
5'-CUU GAU AUG GUG GUA CCC UGG AAA UAA GUG-OH 3'
Met Val Val Pro Trp Lys STOP

If we consider AUG as the start codon, then there would be SIX amino acids only formed from this RNA molecule.

Answer 3: Option A
RNA polymerase, DNA ligase and polymerase are involved in formation of bonds so they will not break any H bond. So it will be helicase, which is involved in opening up of DNA strands.

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