Which enzyme is paired with the substance it digests?
a. lipase ?protein
b. pancreatic amylase ? starch
c. pepsin ?starch
d. salivary amylase ?protein
e. trypsin ? fats
ANSWER: b
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A mutation that occurs when a base is inserted into or deleted from a DNA sequence, completely altering the subsequent sequence of codons, is a
A) frameshift mutation. B) missense mutation. C) silent mutation. D) nonsense mutation.
Scorpion muscle contraction is fueled directly by energy derived from
a. lactic acid. b. ADP. c. ATP. d. ethanol.
A bacterial species that cannot tolerate the presence of oxygen and will only grow in the absence of oxygen is classified as a(n):
obligate aerobe obligate anaerobe facultative aerobe microaerophile aerotolerant anaerobe
Which statement correctly distinguishes a difference in plant and animal cell division?
A) in plant cells, mitosis precedes G2, while in animal cells mitosis follows G2 B) the bipolar spindle seen in dividing animal cells is absent in plant cells C) condensed chromosomes can be seen in plant cells during interphase D) cytoplasmic division differs; plant cells form a cell wall but animal cells do not