How are immune cells able to detect foreign pathogens?
A) They detect foreign, unfamiliar chemical substances released by the invading cells.
B) They are able to detect structures on the surfaces of foreign cells that are not found in the host.
C) They can compare the DNA sequences from the foreign cells to host DNA.
Ans: B) They are able to detect structures on the surfaces of foreign cells that are not found in the host.
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Aquaporins are
A) water transport proteins. B) molecules that prevent water from crossing a membrane. C) enzymes involved in the generation of water within cells. D) cations bound to water molecules.
Organisms that take up inorganic nutrients and convert them to organic molecules such as carbohydrates and proteins are called _______________
A. predators B. consumers C. herbivores D. primary producers E. heterotrophs
Which yellow-pigmented organism exhibits gliding motility that grows best at 35°C and in conditions with increased carbon dioxide (CO2) but cannot grow in ambient air?
a. Actinobacillus b. Capnocytophaga c. Cardiobacterium d. Kingella
The formation of peptide bonds during translation is catalyzed by ____ found in the ____
a. RNA polymerase; large ribosomal subunit b. peptidyl transferase; small ribosomal subunit c. peptidyl transferase; large ribosomal subunit d. aminoacyl-tRNA synthetase; small ribosomal subunit e. aminoacyl-tRNA synthetase; tRNA