Which group includes organisms that are unicellular, have two flagella and contain chlorophyll a & c?

A. foraminifera
B. dinoflagellates
C. euglenoids
D. choanoflagellates


Answer: B

Biology & Microbiology

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The molten globule model of protein folding suggests:

A. hydrogen bonding of secondary structures drives folding. B. translation of the polypeptide is complete before folding begins. C. each domain of a polypeptide folds independently. D. intermediates of increasing free energy are created. E. hydrophobic residues coalesce to form intermediate structures.

Biology & Microbiology

Which of the following genera has proved useful for manipulating plant cells?

A. Escherichia B. Bacillus C. Pseudomonas D. Agrobacterium

Biology & Microbiology

The process by which a cell imports large particles by enclosing them in vesicles pinched off from the plasma membrane is called

A. exocytosis. B. pinocytosis. C. phagocytosis. D. nutrient cytosis.

Biology & Microbiology

Examples of animals already extinct, or facing extinction as a direct result of deliberate efforts to

exterminate them because of their perceived harm to economically useful species, include:a. cheetahs and rhinos. b. passenger pigeons and cheetahs. c. prairie dogs and rhinos. d. rhinos and macaws. e. mountain lions and wolves.

Biology & Microbiology