The synthesis of ATP as a result of the light-dependent reactions of photosynthesis is an __________
reaction that is coupled to the diffusion of __________ down their concentration gradient.
a. endergonic; protons
b. energy-releasing; hydrogen ions
c. exergonic; electrons
d. energy-acquiring; electrons
e. oxidation; water
A
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Which of the following statements is false?
A. The cells of the epiblast and hypoblast differentiate into the three germ layers. B. The inner cell mass of the blastocyst forms the embryo. C. The outer layer of cells of the blastocyst forms the placenta. D. The placenta is composed of both maternal and embryonic cells. E. None of the answer options is false.
What term describes a harmless, noncancerous or precancerous tumor?
A) benign B) carcinogenic C) malignant D) metastatic
Surplus individuals in the __________ disperse and find another habitat in which to settle and
reproduce. a. metahabitats b. sink habitats c. source populations d. source habitats e. K-selected populations
Aminoacyl-tRNA synthetases catalyze covalent addition of ________ ________ to tRNAs.
Fill in the blank(s) with the appropriate word(s).