Which of the following is NOT a characteristic of protozoa?
A) most exhibit asexual reproduction.
B) they are single-celled organisms.
C) they are eukaryotic organisms.
D) they are all photosynthetic.
E) they frequently possess cilia or flagella.
D
Bloom's Taxonomy: Comprehension
Section: The Early Years of Microbiology
Learning Outcome: 1.4
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Comparing DNA and protein sequences to find evidence of a shared evolutionary history is called ________.
A) genomics B) proteomics C) differential relatedness D) bioinformatics
The function of the secretory component of the IgA molecule is
A. to protect IgA from being destroyed by proteolytic enzymes. B. to coat the antigen. C. opsonization. D. to fix IgA to the antigen.
Gated channels are NOT utilized by the cell ____
a. to transport water b. to stimulate muscle contraction c. to generate nerve signals d. for facilitated diffusion e. to transport sodium
The adrenal medulla produces:
a. aldosterone b. epinephrine c. cortisol d. testosterone e. both aldosterone and cortisol