Which one of the following does not match a component of the amniotic egg with its primary function?
A. shell—porous, protective covering
B. chorion—exchange of respiratory gases; retention of water
C. amnion—encloses embryo within an oxygen-filled cavity
D. allantois—segregates nitrogenous wastes from embryo
E. yolk sac—provides food for the embryo
C. amnion—encloses embryo within an oxygen-filled cavity
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The major focus of the clinical microbiologist is to rapidly isolate and identify microorganisms from clinical specimens.
Answer the following statement true (T) or false (F)
Organisms have a tendency to develop resistance to beta-lactams, and humans can develop allergic reactions to them. A drug that also targets the cell wall and can be used as an alternative is ________.
A. fluoroquinolone B. vancomycin C. streptomycin D. tetracycline E. chloramphenicol
A true predator is a species that
A) feeds upon any part of any organism, not necessarily killing it. B) feeds only on animals. C) kills its prey more or less immediately upon capture. D) feeds on dead or living prey.
What is one of the roles of the APC/C during anaphase?
A. To directly target the mitotic cyclins for destruction. B. To directly target separase for destruction. C. To directly target cohesin for destruction. D. To directly target microtubules for destruction.