Water's density and, consequently, its buoyancy decrease at warmer temperatures. Based on this consideration and using data from the table above, at which time of year should one expect diatoms to be storing excess calories mostly as oil?
A) mid-winter
B) early spring
C) late summer
D) late fall
C
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Crossing over occurs during
A) prophase I. B) metaphase I. C) prophase II. D) metaphase II.
Charles Darwin is best known for developing ________
a. the theory of blending inheritance b. improved varieties of fruits and vegetables c. the chromosome theory of inheritance d. the theory of natural selection
Creatine phosphate (marketed as "creatine") is a popular supplement taken by weightlifters and other athletes. What might the phosphates in this supplement be expected to do?
A) They readily allow for the regeneration of ATP. B) They break down glucose during the citric acid cycle. C) They accept electrons at the end of the electron transport chain. D) They ensure ATP is never broken down into ADP.
The repair of a stalled replication fork may be initiated because its structure resembles
a. a Holliday junction. b. a pyrimidine dimer. c. a transcription bubble. d. a base-pair mismatch. e. viral DNA.