Which of these eye structures is responsible for allowing a person to see color?

A) cones B) rods C) sclera D) incus


Answer: A

Biology & Microbiology

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Which of the following is NOT a domain?

A. Eukarya. B. Archaea. C. Protista. D. Bacteria. E. Both Bacteria and Protista.

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NADH transfers electrons to oxygen through which process?

a. glycolysis b. acetyl CoA formation c. the Krebs cycle d. electron transfer phosphorylation e. substrate-level phosphorylation

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What is the sudden withdrawal of one's hand from a hot stove?

A) learning B) common sense C) an instinct D) a reflex

Biology & Microbiology

Cells that help initiate the adaptive immune response by placing microbial antigens on their surfaces are generally referred to as:

A) regulatory T cells. B) B cells. C) antigen-presenting cells. D) helper T cells. E) mast cells.

Biology & Microbiology