Females at highest risk for HIV/AIDS in the United States are those who
a. have sex with other women.
b. have sex with men.
c. regularly inject themselves with shared needles.
d. receive blood transfusions or donated organs.
Answer: B
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In eukaryotes, translation takes place
A. on the plasma membrane. B. inside the nucleus. C. on ribosomes. D. on the nuclear membrane. E. on spliceosomes.
Nonfastidious (rapidly growing), aerobic bacterial organisms can be saved up to 1 year on __________ slants
a. Mycosel agar b. MacConkey agar c. Löwenstein-Jensen medium d. trypticase soy agar (TSA)
Transcription and replication are alike in that both
A) are guided by complementary base pairing. B) are regulated by homeobox genes. C) require DNA polymerase. D) require a promoter and RNA polymerase.
In 1997, Dolly the sheep was cloned. Which of the following processes was used?
A) replication and dedifferentiation of adult stem cells from sheep bone marrow B) separation of an early stage sheep blastula into separate cells, one of which was incubated in a surrogate ewe C) fusion of an adult cell's nucleus with an enucleated sheep egg, followed by incubation in a surrogate D) isolation of stem cells from a lamb embryo and production of a zygote equivalent