There are two solutions separated by a semipermeable membrane. Solution a is 0.3 M glucose, and solution b is 0.15 M NaCl. Will there be a net flow of water across this membrane? Why or why not?
What will be an ideal response?
In osmoles, solution a is 0.3 OsM and solution b is 0.3 OsM (because sodium and chloride dissociate into separate particles). The solutions are isosmotic, and there is no net water flow.
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Which of the following types of neurons is the most common type of neuron found in the brain and spinal cord?
a) bipolar neuron b) multipolar neuron c) unipolar neuron d) nonpolar neuron e) pseudounipolar
Which of the following is not a cardinal sign of diabetes mellitus?
A) polyuria B) polydipsia C) polyphagia D) All of these are signs.
Which would NOT be caused by a decrease in plasma Ca2+ levels in an otherwise normal person?
A. an increase in plasma parathyroid hormone levels B. an increase in plasma 1,25-dihydroxyvitamin D3 levels C. an increase in nerve and muscle excitability D. a decrease in the filtered load of Ca2+ E. an increase in bone density
Synthesis of lipids and glycogen takes place at the
A) ribosomes. B) rough ER. C) smooth ER. D) Golgi apparatus. E) mitochondria.