When cells are in an isotonic solution, they _______ water
Fill in the blank(s) with the appropriate word(s).
neither gain nor lose
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The oxygen production measured in the experiments of this exercise
(a) is a consequence of the breakdown of hydrogen peroxide. (b) is an index of enzyme activity. (c) may depend on pH, temperature, or enzyme concentration. (d) is all of the above.
A chemical characteristic of a cell or particle that causes an immune response is a(n) ____
a. allergy b. antibody c. antigen d. blood type e. Rh factor
Which of the following is a cost experienced by an individual in a promiscuous mating system?
A. An individual experiences high risk of sexually transmitted diseases and parasites. B. If a male does not have an alpha ranking, he is unlikely to mate at all. C. The male does not ensure 'genetic insurance' by mating with multiple females. D. Cuckoldry is common (where a male contributes to parental care of an offspring that he is not related to).
A student notes that an individual has attached earlobes, a recessive trait in humans. A cell is taken from this individual, and the alleles for the trait are isolated. What is the probability that one of the alleles was inherited from the individual's mother?
A. 0% B. 50% C. 75% D. 100%