A cotyledon is indicated by the letter ____
a. A
b. B
c. C
d. D
e. E
ANSWER: d
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Four of the five answers listed below are
functions of parenchyma tissue. Select the EXCEPTION.
a. support b. heal wounds c. store food d. conduct photosynthesis e. secretions
Suppose you have just discovered a Drosophila gene that has a sequence similar to a gene of interest in humans. You need to have mutants of the Drosophila gene because __________
A) you need to see whether fly mutants have a defect in the same system B) you need to see whether the mutant produces the same phenotype C) you need to see whether the Drosophila mutant disrupts the same metabolic pathway D) you want to compare the mutant Drosophila sequence to each mutant human sequence E) you need to have as many alleles in Drosophila as you have found in humans
Deforestation in the boreal forests is due primarily to:
a. commercial logging for rare woods to be used in furniture. b. commercial logging subsistence agriculture. c. clear-cut logging for industrial wood. d. slash-and-burn agriculture for farming e. slash-and-burn agriculture for cattle ranching.
How do DNA repair enzymes typically find mismatched base pairs?
a. by scanning for Okazaki fragments b. by scanning for distortions in the newly synthesized chain c. by scanning for missing hydrogen bonds d. by scanning for unsealed nicks in the DNA strands