A unique feature of the diaphragm is that it is_____
a. the only smooth muscle in the human body
b. the only smooth muscle that can be voluntarily controlled
c. only found in humans
d. the only skeletal muscle that is under involuntary control
e. easily replaceable
ANSWER: b
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Which of the following is not a characteristic of Saccharomyces cultures?
a. The cells are haploid. b. The cells have a relatively short generation time. c. Cells reproduce asexually by budding. d. The cells can be induced to reproduce sexually. e. All answers are true of Saccharomyces cultures.
Sponges obtain food by ________
a. poisoning prey with a mixture of conotoxins b. capturing prey with tentacles equipped with stinging nematocysts c. trapping prey with the villi of collar cells d. photosynthesis
In a certain breed of chicken, an incomplete
dominant gene controls color. The homozygous black, when crossed with the homozygous splashedwhite, produces an intermediate gray color pattern referred to as blue. A second gene controls the shape of the comb. The dominant allele (R) produces rose, whereas the recessive allele (r) produces single. Give the F1 and F2 genotypic and phenotypic ratios of a cross between a pure-breeding black single and a pure-breeding splashed-white rose. What will be an ideal response?
Which of the following is the study of an organism’s
form? a. philosophy b. anatomy c. phylogeny d. taxonomy e. physiology