Which of the following is correctly described as a primary producer?

A. oomycete
B. kinetoplastid
C. apicomplexan
D. diatom
E. radiolarian

Answer: D. diatom

Biology & Microbiology

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Heteroplasmy is associated with inheritance patterns involving

A. nuclear. B. paternal DNA. C. chloroplasts. D. ribosomes. E. imprinted.

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Trophic pyramids typically have a ____ base and a ____ top portion

a. narrow; narrow b. narrow; wide c. wide; narrow d. wide; wide e. flat; flat

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Which was the most likely food source for the first terrestrial tetrapods?

a. leaves b. insects c. small mammals d. worms e. eggs

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Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ________.

A. membranes B. compartments C. cells D. solutes

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