15. Phospholipids are described as
Multiple Choice
13. Which of the following is not one of the four most common elements in the body?
Multiple Choice
16.
Fatty acids in soap have a polar end and a nonpolar end. Which of the following best describes these molecules?
Multiple Choice
22.
Compared to a solution with a pH of 7, a solution with a pH of 4 is
Multiple Choice
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more acidic and has a 1,000-fold increase in [H
+].
-
more acidic and has a 300-fold increase in [H
+].
-
more basic and has a 1,000-fold increase in [H
+].
-
more basic and has a 300-fold increase in [H
+].
-
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?
Multiple Choice
24.
Multiple Choice
25.
When the pH of an acidic solution is brought to 7.0, that change is called __________.
Fill in the blank
27.
How many osmoles are in a solution of 1M NaOH?
Multiple Choice
28.
Which of the following statements accurately describes the solutes within a solution?
Multiple Choice
-
Water is the universal solute, and solutes are more abundant in solutions than solvents are.
-
The solutes are not visible, do not scatter light, and do not settle if the solution is left standing.
-
Solutes are greater than 1 millimeter in size, and will settle out of solution if the mixture is left standing.
-
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 nucleotide that is composed of
Multiple Choice
-
adenine, ribose, and three covalently bonded phosphate groups.
-
adenine, thymine, and three covalently bonded phosphate groups.
-
adipose, thymine, and three phosphate groups linked by ionic bonds.
-
adenosine, deoxyribose, and three phosphorous atoms.
-
arginine, thymidine and three phosphorous atoms.
33.
ucleic acids are made up of
Multiple Choice
-
nucleotides joined by covalent, phosphodiester bonds.
-
nitrogenous bases joined by ionic, disulfide bonds.
-
ribose sugars joined by intermolecular, hydrogen bonds.
-
proteins and sugars joined by polar, covalent, double bonds.
Definition Definition A complex molecule that makes up a fundamental unit of a DNA or RNA molecule. Nucleotides are composed of a sugar, a nitrogenous base, and a phosphoric acid.
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