The nitrogenous waste that requires the most energy to produce is _____
A) ammonia
B) ammonium
C) urea
D) uric acid
Answer: D
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In the context of vision, what does accommodation mean?
a. Accommodation is the lack of receptor response to continuous light signals. b. Accommodation refers to changing the shape of the lens. c. Accommodation is the movement of the lens closer to or further away from the retina in order to focus the d. Accommodation keeps the lens under tension to allow for image focusing. e. Accommodation prevents light from scattering upon entry to the eye.
The secretions of endocrine glands ____
a. only affect their own tissue b. provide feedback by paracrine action c. reach their target tissue via the ECF d. reach their target tissues via the circulatory system e. are only active in the nervous system
The bony or cartilaginous cranium in chordates is adaptive because it
A. develops into the postanal tail. B. protects the brain. C. allows movement, as a lightweight exoskeleton structure. D. replaces the notochord in most chordates. E. forms the vertebrae.
How many bonds can carbon form with other elements?
What will be an ideal response?