Lichens are symbiotic associations of fungi and _____
A) mosses or algae
B) cyanobacteria or algae
C) green algae or liverworts
D) mosses or cyanobacteria
E) mosses or sponges
Answer: B
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Which of the following is NOT a reason for the high fidelity of the newly synthesized DNA molecule?
A. The hydrogen bonding between purines and pyrimidines is stable. B. The DNA polymerase is unlikely to form bonds between nucleotides if they are mismatched. C. The DNA polymerase has exonuclease functions. D. The DNA polymerase has the ability to change the structure of the base in order to form the correct bond
Hopanoids
A) are found in eukaryotes only. B) are related to cholesterol. C) are a type of glycolipid. D) are a type of phospholipid. E) all of the above
Which of the following is not an important biogeochemical cycle on Earth?
A. phosphorus cycle B. iron cycle C. nitrogen cycle D. water cycle E. carbon cycle
This type of fat is fluid at room temperature and the most healthy.
A. monounsaturated B. saturated C. trans fat D. polyunsaturated