Which of the following lipids is the primary component in cell membranes?
A) glycerol B) triglycerides C) steroids D) phospholipids
Answer: D
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Which of the following is not true about yeast?
A. Yeast are larger than most bacteria. B. Yeast possess eukaryotic organelles. C. Yeast reproduce either asexually by budding or sexually through spore formation. D. Yeast contain two or more nuclei.
Stomata generally open in response to ____
a. the release of abscisic acid by the roots b. a drop in CO2 concentration in leaf air spaces c. exposure to red light d. a drop in O2 concentration in leaf air spaces e. an increase in CO2 concentration in the leaf air spaces
Life history patterns:
a. have no genetic component. b. are subject to the pressures of natural selection. c. exist only in organisms that exhibit parental care.
Which one of the following is true regarding viruses?
a) Virions contain both DNA and RNA. b) They multiply by binary fission. c) They are sensitive to antibiotics. d) They are not composed of cells.