Which animal uses positive pressure breathing to ventilate its lungs?
a. human
b. lizard
c. bird
d. cat
e. salamander
ANSWER: e
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The equation AB + H2O ? A + B would be catalyzed by which of the following classes of enzymes?
A) oxidoreductases B) transferases C) hydrolases D) ligases E) isomerases
Four of the five answers listed below contribute to the semen. Select the exception
a. vas deferens b. prostate c. seminal vesicle d. bulbourethral gland e. seminiferous tubule
The structure of DNA is often described as a twisted ladder. The rungs of the ladder represent the sugar phosphate chains. Is this an accurate description? Why or why not?
What will be an ideal response?
A pet store puts both Norway rats (Rattus norvegicus) and black rats (Rattus rattus) in the same cage. If mating occurs, the pregnancy will not succeed because the embryos fail to develop properly. This is an example of
A) temporal isolation. B) hybrid inviability. C) hybrid infertility. D) hybrid vigor. E) gametic incompatibility.