Why does DNA pol I carry the number one?
A. It is the only polymerase that has both 3' to 5' and 5' to 3' exonuclease activity.
B. It is the first polymerase to be activated during DNA replication.
C. It is the smallest polymerase.
D. It was the first polymerase isolated from E. coli.
Answer: D
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How do we know that differentiation produces specialized cells without the loss of genes?
What will be an ideal response?
Before messenger RNA is mature,
a. all exons are deleted and removed. b. a cap and a tail are provided. c. anticodons are assembled. d. the transfer RNA transfers the messenger RNA to the ribosome. e. the single RNA strand duplicates itself in much the same way as DNA
Queen Victoria
a. was a carrier of hemophilia. b. had a hemophilic parent. c. had hemophilia. d. married a man with hemophilia. e. both had a hemophilic parent and married a man with hemophilia.
Which evolved first?
a. prokaryotes c. eukaryotes b. organelles d. mitochondria