PSI is a __________ than PSII
A. weaker oxidant
B. stronger oxidant
C. stronger reductant
D. weaker oxidant and a stronger reductant
E. stronger oxidant and a stronger reductant
D
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Some scientists believe that RNA was the first information storage molecule because ____
a. some viruses use RNA as their information storage molecule b. RNA can be an enzymatic catalyst as well as an information storage molecule c. amino acids cannot form peptide bonds without ribosomes to catalyze their formation d. RNA is a less stable molecule than DNA e. proteins are made of far more amino acid monomers (over 20) than RNA (4)
This apparatus was used in the primitive Earth
atmosphere simulation experiments performed by a. Stanley Miller. b. Thomas Brock. c. Australian researchers. d. Jeon Kwang. e. Lynn Margulis.
One would think that deleterious genes would be eliminated by natural selection, yet we have two human genetic
disorders with a high carrier frequency, sickle-cell anemia and cystic fibrosis. Why has this high frequency for these conditions remained in the population? What will be an ideal response?
Acid-fast cell walls contain high concentrations of
a) teichoic acid. b) peptidoglycan. c) pseudomurein. d) mycolic acid.