In bacteria, fungi, and plants, the high internal pressure generated by osmosis is counteracted by the mechanical strength of their
A. plasma membranes.
B. cytoskeletons.
C. cell walls.
D. organelles.
Answer: C
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Which property of phospholipids allows membrane proteins involved in the same biochemical pathway to associate with each other?
A. formation of lipid rafts B. flip-flop of individual phospholipids C. amphipathic nature of the phospholipids D. decreased fluidity of the membrane due to carbon-carbon double bonds
Recently the focus of research in behavioral ecology has been on the contribution by behavior to an animal's reproductive success. What is this called?
A. average number of mates B. fitness C. foraging efficiency D. longevity E. rate of growth to sexual maturity
Why is antimicrobic sensitivity testing done?
To identify the bacteria causing an infection To determine what antimicrobials the patient is susceptible to To determine what antimicrobials would be most effective for treating the infection To obtain all of this information
Tetracycline antibiotics are frequently included in commercial poultry feed. Why is the practice unwise for human health in the long run?
What will be an ideal response?