Which of the following choices is FALSE? The chromophore
A) Absorbs energy from photons.
B) Is a derivative of vitamin D.
C) Is covalently linked to a member of the opsin gene family.
D) Plays a role in photoreceptor sensitivity to different colors.
Answer: B
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Spongy bone tissue
A. contains interconnecting plates called trabeculae. B. is very dense. C. contains concentric lamellae. D. is the primary component of compact bone. E. has many spaces and lacks osteocytes.
The end products of fat digestion are converted into ________ within epithelial cells and move into the ________ of villi.
A. chylomicrons; lacteals B. small fatty acids; capillaries C. triglycerides; capillaries D. monoglycerides and fatty acids; lacteals
The extraembryonic membrane that forms a fluid-filled sac is the
A) yolk sac. B) amnion. C) allantois. D) chorion. E) decidua.
Which of the following vitamins is needed to promote healthy muscular growth?
A. Vitamin B1 B. Vitamin B2 C. Vitamin B12 D. Vitamin D3