In Arabidopsis plants, about 10% of its genome is devoted to processes tied to which molecule?
A. auxin
B. ubiquitin
C. rubisco
D. phytochrome
E. gibberellins
D. phytochrome
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What effect do high frequency sounds tend to have on the ear?
A. displace the whole length of the basilar membrane with a maximum near the apex B. move only the basal portion of the basilar membrane C. move only the apex portion of the basilar membrane D. move only the portion of the basilar membrane between the basal portion and the apex E. only move the tectorial membrane
Which of the following processes does NOT
serve to maintain low pressure at the receiving end of sieve tube pipelines? a. sucrose conversion into cell-wall polysaccharides b. sucrose conversion into starch in the receiving regions c. sucrose conversion to glucose, which is then used in cellular respiration d. activity of companion cells e. conversion of sucrose to fructose in fruits
Which protist clade (supergroup) is characterized by their greatly modified mitochondria?
a. excavates b. unikonts c. rhizarians
d. archaeplastids e. chromalvolates
Name the general category into which double-stranded circular extrachromosomal DNA elements such as F factors, ColE1, and R would fall
A) partial diploid B) capsid C) plasmid D) r-determinant E) plaque