How does carbon buried in deep ocean sediments return back to the surface?
a. natural floating to the surface
b. carried upward by fish
c. storms at the ocean bottom
d. upward wave motion
e. uplifting of the sea floor
ANSWER: e
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A mutation in a ribosome binding site in the lac operon would likely result in
A) reduction in the amount of LacZ, LacY, or LacA protein. B) reduction in the amount of LacZ, LacY, and LacA proteins. C) complete loss of transcription of the lac operon. D) a lac mRNA that is shorter than wild-type.
Which enzyme joins the paired sticky ends of DNA fragments?
a. reverse transcriptase b. restriction enzyme c. DNA ligase d. DNA polymerase e. polynucleotide kinase
If the frequency of a recessive gene in a population
under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be a. 20 percent. b. 40 percent. c. 80 percent. d. 2pq. e. unpredictable.
Your friend Matti accidentally injected himself with double the correct dosage of insulin. He has collapsed. Quick! It's all up to you. What do you do?
A) Give him glucagon. B) Inject him with more insulin. C) Give him CPR. D) Inject him with thyroxine.