The ability of a solution to resist changes in pH depends on its ____________________ capacity.
Fill in the blank(s) with the appropriate word(s).
buffering
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In humans, spermatogenesis differs from oogenesis in that spermatogenesis ____
a. involves meiosis while oogenesis involves mitosis b. begins at birth while oogenesis begins at puberty c. has unequal cytoplasmic divisions, while oogenesis does not d. produces somatic cells while oogenesis produces gametes e. produces four functional gametes while oogenesis produces one functional gamete
Many proto-oncogenes encode
a. extracellular receptors. b. intracellular receptors. c. tumor suppressor proteins. d. protein kinases. e. extracellular receptors and protein kinases.
It’s a sunny Sunday afternoon, and you decide to give your car a long overdue wash and wax before a new week in the lab begins. An hour or so later, you’re finally finished. You step back to admire the near-mirror polish on your car, when you hear a muffled splat, followed by a bird call high overhead that sounds suspiciously like laughter. What is the primary nitrogenous component of the gross white paste splashed across the roof of your otherwise immaculate car?
a. ammonia b. urea c. uric acid d. nitrogen dioxide
Which plant hormone is used in the product in the
above figure? a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene