The "adaptor" molecule that was hypothesized by Francis Crick to link amino acids to mRNA is actually which type of biomolecule?
A. protein
B. DNA
C. tRNA
D. rRNA
C
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Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the
assembly of microtubules. Speculate how this drug works to inhibit cancer cell growth.
a. Vinblastine inhibits transition from G1 to S. b. Vinblastine inhibits transition from S to mitosis. c. Vinblastine inhibits cytokinesis. d. Vinblastine disrupts mitotic spindle formation and consequently mitosis. e. Vinblastine inhibits cyclin production.
Which of the following organisms is not an
arachnid?
a. spider b. scorpion c. tick d. ant e. mite
When an endospore enters the body it will remain dormant.
A) True B) False
What is the primary growth-promoting hormone of plants?
A. auxin B. gibberellin C. abscisic acid D. cytokinin