What are plasmids?
a. They are circular strands of DNA found in bacteria.
b. They are vectors of diseases.
c. They are a type of virus.
d. They are genetic clones of bacterial chromosomes.
A
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Which of the following is not an essential component of the bacterial elongation stage of translation?
A. functional 70S ribosome B. EF-Ts C. aminoacyl-tRNAs D. ATP
Which of the following is true regarding hemoglobin?
a. It is a lipid. b. It contains iron. c. It raises the concentration of oxygen in the blood. d. It is present in all vertebrates and invertebrates. e. It is identical to hemocyanin.
If a woman of blood type A has a child of blood type O, the father may belong to
a. blood types A, AB, or O, but not B. b. blood type O only. c. blood types A, B, or O, but not AB. d. any blood type other than type A. e. blood type A only.
Which of the following statements regarding terrorism is NOT correct?
A) Terrorism violates the criminal laws of the United States. B) Individuals commit acts of terrorism to further a political or social objective. C) Terrorism intimidates a government or the civilian population. D) The majority of terrorist attacks are impulsive and unplanned.