Reagents, such as dinitrophenol, increase the permeability of the mitochondrial inner membrane to protons. the addition of dinitrophenol to a suspension of animal cells should

a. decrease the rate of oxidation of nadh.
b. inhibit mitochondrial atp synthesis.
c. increase lactic acid production.
d. decrease the rate of pyruvate oxidation.
e. stimulate atp synthesis by mitochondria.

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days, followed by 7 days when no hormones are ingested. which of the following statements most accurately describes the effects of birth-control pills? -birth-control pills maintain constant levels of estrogens and/or progesterone so there is no surge in lh and ovulation does not occur.-birth-control pills inhibit the development of the uterine lining so implantation of a fertilized oocyte cannot occur.-birth-control pills maintain constant levels of estrogens and/or progesterones and mask the release of the oocyte from the follicle.-the 7 days with no hormones does not allow a thick enough uterine lining to form so a fertilized oocyte cannot implant.

Distinctions between earth’s crust and mantle are based on: a. rock types b. chemistry c. seismicity d. all of the above