Cancer treatments may specifically target rapidly dividing cells by using drugs or chemicals that ____
a. promote DNA replication only
b. inhibit DNA repair enzymes only
c. inhibit DNA replication only
d. promote DNA replication or inhibit DNA repair enzymes
e. inhibit DNA replication or DNA repair enzymes
ANSWER: e
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________ is used to measure the amount of a chemoattractant encountered over time.
Fill in the blank(s) with the appropriate word(s).
Gene knockouts in mice can be useful because
A. they can be used to develop models of human disease B. they identify DNA binding proteins C. they limit mRNA production both from the knockout as well as the normal allele in diploids. D. only genes that are actively transcribed in the embryo are susceptible to being knocked out.
Research with the herpes virus herpesvirus 8 focused on the transition from ____
a. G1 to S b. S to G2 c. G1 to G0 d. G2 to prophase e. telophase to cytokinesis.
Which of the following describes the function of beta cells?
a. producing insulin b. stimulating uterine contractions c. producing red blood cells d. facilitating fat storage