In the DNA sequence recognized by EcoRI,
where is the cut made?
a. after the G
b. between the two As
c. between the two Ts
d. after the second T
e. after the C
A
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Which of the following is true of chemotherapeutic agents?
A. They create broken chromosomes or stalled replication forks. B. The cytotoxic effect of these DNA damaging agents requires the cell to be actively dividing. C. These agents are toxic to cancer cells because they are actively dividing to form a tumor. D. The adverse side effects of chemotherapeutics are strongest in cell types that divide rapidly (hair, blood, and the gastrointestinal tract). E. All of these statements are true.
Who developed the individualistic model?
A. Daniel Simberloff B. Frederic Clements C. Henry Allan Gleason D. Joseph Connell E. E. O. Wilson
Which of the following do lobsters and clams
have in common with fishes?
a. an exoskeleton b. a two-chambered heart c. internal gills d. skin as a respiratory surface e. more than one of these
Which of the following viruses is responsible for erythema infectiosum?
A. adenoviruses B. human herpesvirus 1 C. varicella D. human herpesvirus 4 E. B19 virus