Before you inhale, the pressure inside your alveoli is ____
a. 0 mm Hg
b. greater than atmospheric pressure
c. less than atmospheric pressure
d. equal to atmospheric pressure
e. not yet connected to atmospheric pressure
ANSWER: c
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Examine Figure 24.2 in your text. Which of the following groups is monophyletic?
A. humans plus chimpanzees and bonobos B. gorillas plus chimpanzees and bonobos C. gibbons plus Old World monkeys D. gibbons plus orangutans E. gibbons plus orangutans plus gorillas
Genetically modified organisms include ________.
A. plants B. bacteria C. nonhuman animals D. viruses E. All of the above have been genetically modified.
A mosquito becomes infected with West Nile virus and then it bites a human and transfers West Nile virus into the human's bloodstream. Which organism(s) is the vector in this case?
a. human b. mosquito c. bird d. mosquito and bird e. mosquito and human
Which of the following statements concerning gene regulation in eukaryotes is FALSE?
a. The organization of tissues and organs is regulated mainly via transcription. b. Some eukaryotic genes are constitutive. c. Eukaryotic genes do not usually form operon-like clusters. d. "Housekeeping" enzymes are expressed at all times. e. Eukaryotic cells lack inducible genes.