Answer the question using the accompanying figure. Which number identifies a structure that is composed of
polysaccharides?
a. 1
b. 3
c. 6
d. 7
e. 9
ANSWER: c
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A cleaning solution used on the venipuncture site to avoid skin contamination of the blood sample is called a(n):
a. surfactant. b. disinfectant. c. biocide. d. antiseptic.
During cell division the progeny of a trypanosome express a different VSG gene than their parents. Why is this done?
A. To hide from the host's immune system. B. To signal endocytosis of the parasites. C. VSG genes inhibit phagocytosis. D. VSG genes activate photoheterotrophy.
Which of the following is incorrectly paired?
a. tendons—link muscles to bones b. ligaments—hold bones in place c. muscle fibers—make up a myofibril d. cartilage—functions as a shock absorber
The “tunic” of tunicate refers to
a. a body covering. b. the type of food-gathering mechanism. c. muscle arrangements in the larva. d. the immature stage of a true fish. e. organ rotation during reorganization.