All of the following are functions of the cones in the retina except which one?
A. Photoreceptors for color vision
B. They are responsible for the best visual acuity
C. Photoreceptors for brighter light conditions
D. Photoreceptors for non-color vision
Answer: D
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The flexible proteins that link the cell membranes of squamous epithelial cells in skin are
A) cadherins. B) cellular adhesion molecules (CAMs). C) collagens. D) keratins.
Terrestrial vertebrates detect pheromones using an organ called the __________ organ
Fill in the blank with the correct word.
In cells preparing for division, the phase of the life cycle that is most variable in length is ________ of interphase.
Fill in the blank(s) with the appropriate word(s).
Which organ system includes blood vessels and the heart?
A) lymphatic system B) cardiovascular system C) respiratory system D) endocrine system