The process by which an amoeba engulfs a food particle is termed
a. osmosis
b. diffusion
c. receptor-mediated endocytosis
d. pinocytosis
e. phagocytosis
Ans: e. phagocytosis
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Microorganisms in abscesses often are not killed by antimicrobial agents because
A. the microorganisms stop dividing. B. of the chemical nature of the pus. C. of the lack of blood vessels. D. of the high level of oxygenation. E. the microorganisms stop dividing, of the chemical nature of the pus AND of the lack of blood vessels.
The first heterotrophs obtained their energy from
a. autotrophs. b. chemosynthetic organisms. c. organic material in the ocean. d. photosynthetic organisms.
Baleen plates are composed of:
a. calcium carbonate. b. cellulose. c. keratin. d. chitin. e. silica.
Select all of the choices that apply to a gene carrier.
a. possesses but does not express the allele in question b. typically has a homozygous dominant genotype c. typically has a heterozygous genotype d. typically has a homozygous recessive genotype e. both possesses and expresses the allele in question