Match the cytoskeletal filament with its protein subunit. Responses may be used multiple times or not at all. a. microtubule b. intermediate filament c. microfilament ____ keratin ____ actin ____ tubulin ____ lamin ____ vimentin
What will be an ideal response?
b, c, a, b, b
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Eukaryotic cell membranes use many sterol molecules for construction, which contrasts with archaeal membranes that utilize ________.
Fill in the blank(s) with the appropriate word(s).
An infected individual who is a potential source of infection for others and plays an important role in the epidemiology of the disease is a/an ________.
A. carrier B. host C. reservoir D. index case
Cells produced by dividing B or T cells may be set aside for future responses to threat. These cells are
called a. effector cells. b. memory cells. c. dendritic cells. d. phagocytes. e. fibroblasts.
Contraction of the fibers labeled A in Figure 40-2 results in:
a. elongation of the body.
b. elongation of the tentacles.
c. elongation of the gastrovascular cavity.
d. shortening of the body.
e. expansion of the pedal disk.