Which type of cellular transport uses transport proteins and moves substances from an area of high concentration to an area of low concentration?
A) secondary active transport
B) primary active transport
C) facilitated diffusion
D) simple diffusion
E) phosphotransferase system
Answer: C
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A. oxygen B. glucose C. sucrose D. All of the answer choices are correct.
Erythropoietin is secreted by
a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the pineal gland. e. the kidneys.
Evolution is defined as genetic change in populations over time
Indicate whether the statement is true or false
Cells that insulate and speed impulse conduction between neurons in the PNS are
A. Schwann cells. B. nodes of Ranvier. C. astrocytes. D. oligodendrocytes.