A transfer RNA (tRNA) carries
a. the mRNA transcript to the ribosome
b. the proper amino acid to the ribosome
c. the stop codon to the ribosome
d. RNA polymerase to the ribosome
Answer: b. the proper amino acid to the ribosome
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Where is a chemical synapse NOT found?
a. between two neurons. b. between a neuron and a muscle fiber. c. between a neuron and a gland. d. between a neuron and a capillary. e. chemical synapses are found between all of these.
What is the function of nucleosomes?
a. To prevent DNA strands from tangling. b. To help DNA replicate. c. To make RNA synthesis possible. d. To prevent RNA from tangling with DNA during transcription. e. To prevent histones from tangling
Why does HIV cause disease in people?
A) It produces a toxin. B) It destroys helper T cells. C) It stimulates the growth of memory cells. D) It causes the loss of plasma nutrients.
The dolphin and ichthyosaur both evolved some similar features independently. What are these kind of features called?
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