Which of the following contributes to an erythrocyte's efficiency in distributing oxygen?
a. presence of mitochondria
b. biconcave shape
c. lobed nuclei
d. granules
e. extraordinarily large size
B
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Conifers are estimated to have genomes ranging from 18 to 35 ____ base pairs, whereas the human genome has
approximately 3.3 billion base pairs.
a. hundred b. thousand c. million d. billion e. trillion
These are the primary cellular sites for the extraction of energy from organic compounds:
1.Golgi bodies 2.ribosomes 3.mitochondria 4.lysosomes 5.endoplasmic reticula
Enterococci can be described as:
a. able to hydrolyze bile esculin. b. usually hemolytic. c. a major cause of pharyngitis. d. often carrying an antiphagocytic capsule.
Ocean currents
A. are generated by friction between winds and ocean surfaces. B. are driven by the Earth's core rotating faster than the ocean water. C. always move clockwise in an ocean basin. D. are important in shipping but have little effect on living environments. E. All of the choices are correct.