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Which of the following is not directly involved in translation?


A) DNA
B) mRNA
C) tRNA
D) rRNA
E) Ribosomes

F) None of the above
G) All of the above

Correct Answer

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__________ opens up one segment of the DNA helix during replication; __________adds complementary free nucleotides to the exposed DNA strand.


A) DNA ligase; DNA helicase
B) DNA helicase; DNA polymerase
C) DNA ligase; DNA polymerase
D) DNA helicase; DNA ligase
E) DNA polymerase; DNA ligase

F) A) and D)
G) None of the above

Correct Answer

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Although all cells synthesize phospholipids,there are no genes for phospholipids.

A) True
B) False

Correct Answer

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After mitosis,each chromosome consists of two parallel filaments called sister chromatids.

A) True
B) False

Correct Answer

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