The plant hormone that promotes dormancy in some plants and seeds is ____
a. abscisic acid
b. auxin
c. gibberellin
d. ethylene
e. cytokinin
ANSWER: a
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Which theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid
column as water is pulled from roots to leaves?
a. pressure flow b. evaporation c. cohesion-tension d. abscission e. fusion
Do you think that nonsubstance-related addictions, such as compulsive gambling or compulsive eating, have a greater
genetic or environmental component compared to substance-related additions, such as nicotine? Explain your reasoning. What will be an ideal response?
Chloramphenicol is an antibiotic that targets prokaryotic (70S) ribosomes, but not eukaryotic (80S) ribosomes. Which of these questions stems from this observation, plus an understanding of eukaryotic origins?
A) Can chloramphenicol also be used to control human diseases that are caused by archaeans? B) Can chloramphenicol pass through the capsules possessed by many cyanobacteria? C) If chloramphenicol inhibits prokaryotic ribosomes, should it not also inhibit mitochondrial ribosomes? D) Why aren't prokaryotic ribosomes identical to eukaryotic ribosomes?
Most of hominin evolution occurred in Africa, but there is fossil evidence that members of the genus Homo first migrated out of Africa at least ________ years ago
A) 5 million B) 1.8 million C) 10 million D) 3 million