The term "tonicity" refers to
A. the secretion of products outside of the cell through the plasma membrane.
B. the effects of filtration on a cell.
C. the effect of a solution on water movement into or out of cells.
D. the separation of one cell into two daughter cells.
Answer: C
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Which of the following belong to the pulmonary circuit?
A. Venae cavae and pulmonary veins B. Pulmonary arteries and pulmonary veins C. Aorta and pulmonary veins D. Pulmonary arteries and venae cavae E. Aorta and venae cavae
The pulmonary veins carry ________ blood to the ________.
A. deoxygenated; right atrium B. oxygenated; lungs C. oxygenated; left atrium D. deoxygenated; lungs
Which of the following could contribute the most in preventing or prolonging osteoporosis?
A. girls jumping rope before puberty B. boys running after puberty C. middle-age women walking before menopause D. all of the above are of equal importance
Myosin is considered to be a regulatory protein because it plays an important role in the regulation of muscle contraction
Indicate whether the statement is true or false