Which feature is shared by euglenoids and
kinetoplastids?
a. an eyespot
b. a single flagellum
c. photoautotrophy
d. parasitic existence
e. live in marine and freshwater habitats
Answer: b
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What has sequencing the genomes of modern humans, nonprimates, Neanderthals, and Denisovans determined about the relationship between modern humans and other lineages?
A) Denisovans and Neanderthals lived together in Europe about 30,000 years ago and interbred with each other. B) The lineages leading to Denisovans, Neanderthals, and modern humans diverged 800,000 years ago and the different lineages did not exist at the same time. C) Modern humans lived together with Neanderthals in Africa and interbred with them. D) Modern humans are the direct descendants of Neanderthals. E) Modern humans lived together and interbred with Denisovans in parts of Asia and the south Pacific.
Which sigma factor, encoded by the rpoH gene, is active at high temperatures?
A) ?70 B) ?32 C) ?45 D) ?37 E) ?50
When graphing a distribution of phenotypes for a continuous trait, a broad curve implies
A) little variation in the phenotypes. B) a large standard deviation. C) a small variance. D) a large correlation coefficient. E) a zero regression line slope.
What do hydrolases catalyze?
a. splitting water b. oxidation-reduction reactions c. splitting a molecule using water d. the transfer of a phosphate group e. reactions in which double bonds are formed