An emulsion is classified as a specific type of
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colloid.
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suspension.
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Multiple Choice
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1 osm
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2 osm
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3 osm
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4 osm
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.
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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.
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-
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
ATP is a
nucleotide that is composed ofMultiple Choice-
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.
A
polymer is made up of several subunits called __________.Fill in the blankWhen biological molecules engage in condensation, such reactions are _________ reactions.
Multiple Choice-
synthesis
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hydrolysis
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catabolic
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amphipathic
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ergonomic
Nucleic acids are made up ofMultiple Choice-
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.
For every atom of carbon in a carbohydrate
Multiple Choice-
there is approximately one atom of hydrogen.
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there are approximately two atoms of hydrogen.
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there are approximately three atoms of hydrogen.
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there are approximately four atoms of hydrogen
While a runner is in a marathon, his or her liver will have to free some stored energy to keep blood sugar levels adequate; the liver will liberate this energy by way of a process called
Multiple Choice-
dehydration synthesis.
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glycogensis.
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glycogenolysis.
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polysaccharide synthesis.
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dialysis.
The most common lipids in the body are
Multiple Choice-
triglycerides, and they are used for energy storage in adipose.
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glycoproteins, and they are used as backbones for cell membranes.
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eicosanoids, and they are used as hormonal messengers.
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steroids, and they are used as signaling molecules in inflammatory responses.
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phospholipids, and they are used as key ingredients of bile salts.
The three parts making up a nucleotide are
Multiple Choice-
a purine, a pyrimidine, and a ribose sugar.
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a five-carbon sugar, a phosphate group, and a nitrogenous base.
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an adenine, a guanine, and a cytosine.
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a double helix, a single strand, and a chromosome.
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a phosphorous, a deoxygenated ribose, and an amino acid.
In some proteins, an ionic bond may form between an amino acid with
Multiple Choice-
a positive R group and an amino acid with a negative R group.
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a negative R group and a nonpolar amino acid.
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a sulfhydryl group and an amino acid with an
amine group. -
a carboxyl group and an amino acid with a C-terminal.
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a glycine and another with a tryptophan.
The first amino acid put in place when a protein is being synthesized at a ribosome is
Multiple Choice-
glycine.
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tryptophan.
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methionine.
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cysteine.
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proline.
Polar R groups of closely positioned amino acids often enter into _________ with each other, which helps give a protein its three-dimensional shape.
Multiple Choice-
hydrophobic interactions
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ionic bonds
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hydrogen bonds
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van der Waal repulsions
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sulfur-carbon bondssolution.
How many osmoles are in a solution of 1M NaOH?
15. Phospholipids are described as
Multiple Choice-
polar.
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nonpolar.
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amphipathic.
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amphiprotic.
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