To which subtype of muscle tissue does a fiber with cross-striations and many peripherally located nuclei belong?
a. skeletal.
b. cardiac.
c. smooth.
d. none of the above.
d
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Chemotaxis is a sensory response affecting the rotational direction of the flagellar motor
Indicate whether the statement is true or false.
Symbionts such as Aeromonas veronii of leeches and Buchnera symbionts of insects are transmitted ________ to ensure the safe transfer of the symbiont to the next host generation
A) vertically to offspring B) horizontally through infected water C) horizontally through infected secondary hosts D) vertically through the air
The distribution of cytoplasm to daughter cells is accomplished during
a. prokaryotic fission. b. mitosis. c. meiosis. d. cytokinesis. e. karyokinesis.
Human skin color is thought to be determined by at least three pairs of alleles. If dark skin (D) is dominant to light skin (d), the genotypes that will produce the darkest skin are
A. D1d1 D2d2 D3d3. B. D1D1 D2d2 d3d3. C. d1d1 D2D2 D3d3. D. D1d1 D2d2 D3D3.