When carbohydrates are digested, the following molecules can be absorbed: ________
A) small oligosaccharides
B) disaccharides
C) monosaccharides, disaccharides, and small oligosaccharides
D) monosaccharides
Answer: D
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Epithelium that consists of a single layer of cells, in which some cells are tall and thin and reach the free surface and others do not, is classified as
A) simple columnar epithelium. B) pseudostratified columnar epithelium. C) stratified squamous epithelium. D) transitional epithelium. E) simple squamous epithelium.
When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to sodium ions,
A. the membrane will be hyperpolarized. B. more chloride ions will also diffuse into the cell. C. an excitatory postsynaptic potential (EPSP) will result. D. the membrane will become impermeable to potassium ions. E. the sodium ions diffuse out of the cell.
In Addison's disease, the adrenal cortices degenerate. Which will result if a patient with this disease undergoes prolonged fasting?
A. hypoglycemia B. hyperglycemia C. excessive lipolysis D. decreased insulin sensitivity E. excessive liver gluconeogenesis
A hypothetical postsynaptic neuron has three presynaptic inputs->X, Y, and Z. When X and Y are stimulated simultaneously, the postsynaptic neuron undergoes an action potential, yet when X and Z are stimulated simultaneously, there is no change in the postsynaptic neuron's potential. What can you logically conclude?
a. Y and Z are both excitatory. b. Y and Z are both inhibitory. c. Y is excitatory and Z is inhibitory. d. Y is inhibitory and Z is excitatory. e. Not enough information to answer.