Many spirochetes are difficult to cultivate, so their classification is based on their
A. morphology and ability to cause disease.
B. number of flagella.
C. pattern of pili.
D. number of chromosomes.
A
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One strategy moths have for evading bats is
a. the ability to become invisible to the bat's echolocation signals. b. straight-line flight patterns. c. a periodic closed-wing free-fall before resuming an erratic flight pattern. d. an erratic flight pattern, but no instances of free-fall. e. flying primarily in the daylight hours.
Fred has been diagnosed with a disease that causes him to forget that his relatives have been to see him. What parts of his brain are likely affected, given this information?
A) cerebellum and midbrain B) corpus callosum and pons C) hippocampus and amygdala D) medulla oblongata and thalamus
The type of RNA modification that requires guide RNAs is ________
A) addition of the 3? polyadenylated tail B) RNA editing C) removal of introns D) addition of the 7-methylguanosine cap to the 5? end E) splicing together of exons
You're examining the structure of a newly discovered protein, and you see that it includes lots of a-helices and B-pleated sheet. Your specific observations are of the ______________ structure of the protein, and are the direct results of _____________?
Fill in the blank(s) with the appropriate word(s).