1. A tRNA is activated when it
a releases its specific amino acid.
b leaves the ribosome.
c attaches to the ribosome.
d attaches to mRNA.
e attaches to its specific amino acid.
2. The nucleotides in the backbone of DNA are held together by __________ bonds.
a ionic
b phosphodiester
c hydrogen
d peptide
e glycosidic
3. The two new DNA molecules formed in replication
a. both contain only two new daughter DNA strands.
b. both contain only the parent DNA strands.
c. contain one parent and one daughter strand.
d. are complementary to the original DNA.
e. are identical, with one containing both parent strands, and the other containing both daughter strands.