Four of the five answers listed below are
members of the same group. Select the
EXCEPTION.
a. amoeba
b. clostridium
c. euglena
d. water molds
e. ciliates
B
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Oak trees and many other plant species have years in which they have synchronous production of many progeny by all individuals in a population. This is known as
A. sympatry. B. crypsis. C. armorment. D. masting. E. None of the choices are correct.
A microbiology student with a visual disability is viewing a sample of Bacillus endospores in a phase contrast microscope that is linked to an iPad. By "stretching" the image on the iPad screen, the student can increase the apparent size of the endospores. How does this manipulation affect resolution and contrast? (No software is being used to alter the image!)
A. Resolution and magnification will decrease because the screen is not as good as the human eye. B. Only the magnification can be increased; resolution and contrast are unchanged. C. Both magnification and resolution increase; contrast is unchanged. D. Contrast will improve because the microscope is phase-contrast.
Each DNA nucleotide is made up of
a. a six-carbon sugar, a phosphate group, and one of twenty amino acids. b. a five-carbon sugar, a nitrogenous base, and one of twenty amino acids. c. a five-carbon sugar, a phosphate group, and one of four nitrogenous bases. d. a six-carbon sugar, a nitrogenous base, and one of four amino acids. e. a five-carbon sugar, a phosphate group, and one of four amino acids.
Cardiac muscle cells are associated with
a. bundles. b. a sheath of dense connective tissue. c. voluntary responses. d. cells tapered at both ends. e. communication junctions.