The net movement of molecules from locally concentrated regions to uniform distributions is best described as:
a. enthalpy.
b. diffusion.
c. passive transport.
d. active transport.
e. concentration gradient.
Ans: b. diffusion.
You might also like to view...
RNA molecules that also act as enzymes are given the name
A. cofactors B. coenzymes C. ribozymes D. allosteric enzymes
If an animal suffered damage to the temperature sensor in its brain, what would be the result?
A. The integrating center would not receive inputs to compare to the set point. Body temperature could rise or fall to dangerous levels. B. The animal would fall back onto a more primitive ectothermic mode of regulation. C. Only the integumentary system is required to sense temperature changes. Body temperature would remain stable. D. The animal would have to rely on shivering instead of vasoconstriction to maintain body heat.
What would happen if you cut the vestibular fibers of the vestibulocochlear nerve?
a. You would not be able to detect sound. b. You would not be able to detect linear acceleration. c. You would loose sensory functions in the upper body. d. You would loose your sense of taste. e. You would loose your sense of smell.
What is the process by which water and nutrients are removed from the filtrate and returned to the blood?
A) Filtration B) Excretion C) Elimination D) Reabsorption E) Secretion