Some genes encoding proteins that are
essential to the survival of the organism are
called highly conserved sequences. Which of
the following is an example of one of these
proteins?
a. cytochrome b
b. muscle structural proteins
c. carbohydrate hydrolyzing genes
d. skin pigmentation
e. keratin
A
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Refer to Figure 50-2. Which of the labeled structures refers to the prostate gland?
a. 1 b. 3 c. 5 d. 7 e. 9
Which of the following viruses is a DNA virus that infects liver cells?
A) hepadnaviruses B) herpesviruses C) polyomaviruses D) poxviruses E) adenoviruses
Thick filaments are parallel bundles of ____ molecules
a. actin b. tropomyosin c. acetylcholine d. myosin e. troponin
Which plants resemble palm trees (but are not close relatives), and contain toxins that increase the risk of neurodegenerative disorders and cancer?
a. tree ferns b. conifers c. gnetophytes d. ginkos e. cycads