Phospholipids are described as Multiple Choice polar. nonpolar. amphipathic. amphiprotic.
15. Phospholipids are described as
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polar.
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nonpolar.
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amphipathic.
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amphiprotic.
13. Which of the following is not one of the four most common elements in the body?
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Oxygen
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Nitrogen
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Hydrogen
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Carbon
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Calcium
16.
Fatty acids in soap have a polar end and a nonpolar end. Which of the following best describes these molecules?
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Amphipathic
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Hydrophilic
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Hydrophobic
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Charged
22.
Compared to a solution with a pH of 7, a solution with a pH of 4 is
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more acidic and has a 1,000-fold increase in [H+].
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more acidic and has a 300-fold increase in [H+].
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more basic and has a 1,000-fold increase in [H+].
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more basic and has a 300-fold increase in [H+].
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more basic and has a 300-fold decrease in [H+].
29.
A technician is asked to make up a solution of physiological saline and is told that it should be a 0.9% NaCl solution using the mass/volume percent measurement of concentration. If the technician is making 100 milliliters of solution, how much NaCl should be included?
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9 micrograms
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9 kilograms
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9 grams
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0.9 grams
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90 grams
24.
Bicarbonate (HCO3-) is a
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strong proton donor.
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strong proton acceptor.
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weak proton donor.
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weak proton acceptor.
25.
When the pH of an acidic solution is brought to 7.0, that change is called __________.
How many osmoles are in a solution of 1M NaOH?
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1 osm
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2 osm
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3 osm
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4 osm
28.
Which of the following statements accurately describes the solutes within a solution?
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Water is the universal solute, and solutes are more abundant in solutions than solvents are.
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The solutes are not visible, do not scatter light, and do not settle if the solution is left standing.
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Solutes are greater than 1 millimeter in size, and will settle out of solution if the mixture is left standing.
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Solutes are between 1 nanometer and 1 millimeter in size; they do not scatter light but will settle out of solution if left standing.
30.
ATP is a
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adenine, ribose, and three covalently bonded phosphate groups.
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adenine, thymine, and three covalently bonded phosphate groups.
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adipose, thymine, and three phosphate groups linked by ionic bonds.
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adenosine, deoxyribose, and three phosphorous atoms.
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arginine, thymidine and three phosphorous atoms.
33.
ucleic acids are made up of
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nucleotides joined by covalent, phosphodiester bonds.
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nitrogenous bases joined by ionic, disulfide bonds.
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ribose sugars joined by intermolecular, hydrogen bonds.
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proteins and sugars joined by polar, covalent, double bonds.
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