Visual acuity is highest when an image is focused on what part of the retina?

A. Anywhere, as long as there is ample light
B. Cones within the fovea
C. Rods outside the fovea
D. Cones outside the fovea
E. Rods within the fovea


Answer: B

Biology & Microbiology

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During daylight hours, primarily

a. Pr absorbs red light and is converted to Pfr. b. Pr absorbs far-red light and is converted to Pfr. c. Pfr absorbs red light and is converted to Pr. d. Pfr absorbs far-red light and is converted to Pr. e. Pfr is converted to Pr.

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Fossils include

a. skeletons. b. shells. c. seeds. d. tracks. e. all of these.

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Short single-stranded pieces of DNA called ________ attach to a DNA template to serve as the beginning site of DNA replication

Fill in the blank(s) with correct word

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Which bond term describes a covalent bond in which electrons are shared unequally?

A.) polar B.) hydrogen C.) ionic D.) nonpolar

Biology & Microbiology