Which of the following statements is true?
a. Tonicity refers to the effect of penetrating solutes on cell volume.
b. A one molal solution contains 1 mole of solute per liter of solution.
c. To accommodate larger molecules, membrane channels have an average diameter of 1 – 1.5 nanometers.
d. Carrier proteins span the membrane and can undergo shape changes.
e. Aquaporins regulate solute movement across membranes.
D
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For the following, match the term with the best description.A. A characteristic of aging arteriesB. Produced by turbulent blood flowC. Blood flow is directly proportional to pressure differences and inversely proportional to resistanceD. As pressure in a vessel decreases, the force holding it open decreases, and the vessel tends to collapseE. A characteristic of the venous systemArteriosclerosis
Fill in the blank(s) with the appropriate word(s).
The common ________ veins converge at the level of L5 to form the inferior vena cava.
Fill in the blank(s) with the appropriate word(s).
________ are short term regulators of appetite, whereas ________ is a long-term regulator.
A. Leptin and insulin; cholecystokinin (CCK) B. Peptide YY (PYY) and insulin; cholecystokinin (CCK) C. Leptin and insulin; peptide YY (PYY) D. Peptide YY (PYY) and cholecystokinin (CCK); insulin E. Insulin and cholecystokinin (CCK); peptide YY (PYY)
Which of the following statements concerning the process of glomerular filtration is correct?
a. Bowman's capsule hydrostatic pressure opposes filtration. b. the glomerular filtration rate is limited by a Tm. c. all of the plasma that enters the glomerulus is filtered. d. two of these answers. e. all of these answers.