Steroids are (branched/multi-ringed/unbranched) hydrocarbons.
Fill in the blank(s) with the appropriate word(s).
multi-ringed
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You are examining a human pedigree for a trait. You notice that an offspring can be affected even if neither parent is affected. This immediately tells you that the trait is:
A. dominant. B. recessive. C. epistatic. D. produced by multiple alleles. E. incomplete penetrance.
Which of the following cells conduct sugars and other organic solutes?
a. tracheids b. vessel elements c. companion cells d. sieve elements e. xylem
Through the process of cell differentiation ________.
A) each cell develops a characteristic set of structural features B) each cell becomes capable of performing all vital functions C) cells in nearby locations become unable to work together D) each cell becomes able to change its function throughout its life cycle E) None of the answers are correct.
Conjugation between a bacterium that lacks an F factor (F?) and a bacterium that has an F factor on its chromosome (F+) could produce which of the following results?
A) The F? bacterium ends up carrying one or more plasmids from the F+ bacterium; the F+ bacterium is unchanged. B) The F+ bacterium ends up with a recombinant chromosome that carries some genes from the F? bacterium, and the F? bacterium ends up with an unaltered chromosome. C) The F+ bacterium ends up with a recombinant chromosome that carries some genes from the F? bacterium, and the F? bacterium ends up with a chromosome that lacks those genes. D) The F? bacterium ends up with a recombinant chromosome that carries some genes from the F+ bacterium, and the F+ bacterium ends up with an unaltered chromosome.