Which of the following is an enzyme?
A) iron
B) histidine
C) carboxypeptidase A
D) ATP
E) N-acetylmuramic acid
C) carboxypeptidase A
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The scanning electron microscope differs from the transmission electron microscope in that the
scanning electron microscope:a. can view a live specimen. b. relies on the detection of electrons from the beam after contact with the specimens. c. can view the internal structure of a cell. d. utilizes a beam of light that passes through the specimen. e. gives a three dimensional image of the object being studied
Which term best describes a trait that is shared by all members of a clade and only by members of that clade?
a) molecular clocks b) dichotomous structures c) derived characters d) nodes
VNTRs and STRs differ in that
A) a VNTR repeat is shorter than an STR repeat. B) a VNTR repeat is longer than an STR repeat. C) a VNTR is a type of copy number variant and an STR is not. D) an STR is a type of copy number variant and a VNTR is not.
When a sea star loses a leg and the leg grows into an adult sea star, this is an example of which of the following?
a. parthenogenesis b. hermaphroditic mating c. fragmentation d. budding