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All of the following pertain to 146C except it


A) has 6 protons.
B) has 6 electrons.
C) has 14 neutrons.
D) is an isotope of carbon.
E) mass number is 14.

F) C) and E)
G) A) and B)

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A solution is composed of one or more substances called _____ that are uniformly dispersed in a dissolving medium called a _____. or

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Which of the following would have glycosidic bonds?


A) triglycerides
B) monosaccharides
C) polypeptides
D) polysaccharides
E) ATP

F) B) and C)
G) D) and E)

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Compare and contrast the chemical and functional characteristics of DNA and RNA molecules.

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DNA and RNA are both nucleic acids, but ...

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The total number of protons and neutrons of an element establishes its _____ number.

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All of the following are correct about triglycerides, except:


A) they are insoluble in water
B) they are a concentrated source of energy
C) when they are unsaturated they are solid
D) they dissolve in nonpolar solvents
E) they are digested by lipases

F) A) and B)
G) A) and C)

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Jim needs to prepare one liter of a 4% NaCl solution.How much NaCl should he weigh out?


A) 0.4 grams
B) 4.0 grams
C) 40 grams
D) 400 grams
E) None of the choices are correct.

F) A) and B)
G) A) and C)

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Only charged atoms can form ionic bonds.

A) True
B) False

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Organic chemicals always have a basic framework of the element _____ bonded to other atoms.

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Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization.

A) True
B) False

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All of the following are polysaccharides, except:


A) dextran in some bacterial slime layers
B) agar used to make solid culture media
C) a cell's glycocalyx
D) cellulose in certain cell walls
E) prostaglandins in inflammation

F) A) and C)
G) B) and C)

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One nucleotide contains


A) one phosphate.
B) one pentose.
C) one nitrogen base.
D) All of the choices are correct.
E) None of the choices are correct.

F) C) and D)
G) B) and C)

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Purines and pyrimidines are components in the building block units of all _____.

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Which of the following represents an exchange reaction?


A) AB \rarr A + B
B) A + B \rarr AB
C) X + Y \rarr XYD
D) AB + XY \leftrightarrow AX + BY
E) None of the choices are correct.

F) A) and C)
G) C) and E)

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Which of the following carbohydrates is found in dairy products?


A) lactose
B) sucrose
C) maltose
D) glucose
E) fructose

F) A) and C)
G) A) and E)

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Which of the following is the stored form of carbohydrates in animals?


A) glycogen
B) maltose
C) starch
D) cellulose
E) galactose

F) B) and D)
G) B) and C)

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The concentration of a solution expresses the amount of solvent present.

A) True
B) False

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If carbon has an atomic number of 6 and an atomic mass of 14, how many neutrons does it have?


A) 6
B) 7
C) 8
D) 14
E) impossible to determine

F) B) and D)
G) A) and E)

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ATP is best described as


A) an enzyme.
B) a double helix.
C) an electron carrier.
D) the energy molecule of cells.
E) All of the choices are correct.

F) A) and D)
G) B) and D)

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Water molecules are nonpolar molecules.

A) True
B) False

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