Question 1

In the compound H₂CO₃, what do the numbers 2 and 3 represent?

Accepted Answer

The 2 indicates that there are...

Question 2

Carbohydrates are stored in the liver and skeletal muscles in the form of __________.

Accepted Answer

A)   glycogen
B)   cholesterol
C)   glucose
D)   triglyceridesE) A) and C)
F) A) and B) A

Question 3

Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?

Accepted Answer

Cholesterol is produ...

Question 4

If all protons, electrons, and neutrons are alike, regardless of the atom considered, what determines the unique properties of each element?

Accepted Answer

Atoms of different e...

Question 5

Chemical properties are determined primarily by neutrons.

Accepted Answer

A) True 
 B)False

Question 6

The single most abundant protein in the body is ___________.

Accepted Answer

A)   glucose
B)   DNA
C)   collagen
D)   hemoglobinE) None of the above
F) B) and D) C

Question 7

Which property of water is demonstrated when we sweat?

Accepted Answer

A)   high heat of vaporization
B)   polar solvent properties
C)   cushioning
D)   high heat capacity
E)   reactivityF) A) and D)
G) A) and C)

Question 8

Forming glycogen as energy storage in the liver is an example of__________ .

Accepted Answer

A)   anabolism
B)   exergonic
C)   catabolism
D)   oxidationE) A) and B)
F) B) and D)

Question 9

Are all chemical reactions reversible? If not, why aren't they all reversible?

Accepted Answer

All chemical reactions are the...

Question 10

Select the most correct statement regarding nucleic acids.

Accepted Answer

A)   DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
B)   Three forms exist: DNA, RNA, and tDNA.
C)   RNA is a long, single-stranded molecule made up of the bases A, T, G, and C.
D)   tDNA is considered a "molecular slave" of DNA during protein synthesis.E) A) and D)
F) A) and C)

Question 11

Which of the following is incorrectly matched?

Accepted Answer

A)   amino acid; protein
B)   nucleotide; nucleic acid
C)   eicosanoid; triglyceride
D)   monosaccharide; carbohydrateE) All of the above
F) B) and D) C

Question 12

Choose the answer that best describes HCO3-.

Accepted Answer

A)   a weak acid
B)   a proton donor
C)   common in the liver
D)   a bicarbonate ionE) A) and B)
F) A) and D)

Question 13

Glycogen, the storage form of glucose, is primarily stored in skeletal muscle and liver cells.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following statements is FALSE?

Accepted Answer

A)   When the hydrogen ion concentration decreases, the hydroxyl ion concentration also decreases.
B)   The more hydrogen ions in a solution, the more acidic the solution.
C)   When acids and bases are mixed, they react with each other to form water and a salt.
D)   The pH of blood is slightly basic.E) A) and C)
F) B) and D)

Question 15

If the atomic mass of an element is 14 and the atomic number is 6, which of the following would describe this element?

Accepted Answer

A)   isotope
B)   atom
C)   neutral
D)   ionE) C) and D)
F) A) and B)

Question 16

Name at least four things you know about enzymes.

Accepted Answer

1. Most are proteins. 2. They have speci...

Question 17

Starch is a__________ .

Accepted Answer

A)   polysaccharide
B)   triglyceride
C)   monosaccharide
D)   disaccharideE) B) and C)
F) All of the above

Question 18

Which statement about enzymes is FALSE?

Accepted Answer

A)   Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements.
B)   Enzymes may be damaged by high temperature.
C)   Most enzymes can catalyze millions of reactions per minute.
D)   Enzymes require contact with substrate in order to assume their active form.E) None of the above
F) A) and B)

Question 19

If atom X has an atomic number of 74 it would have which of the following?

Accepted Answer

A)   37 electrons
B)   37 protons and 37 electrons
C)   74 protons
D)   37 protons and 37 neutronsE) A) and B)
F) B) and C)

Question 20

Which of the following does NOT characterize proteins?

Accepted Answer

A)   They may be denatured or coagulated by heat or acidity.
B)   They have both functional and structural roles in the body.
C)   Their function depends on their three-dimensional shape.
D)   They appear to be the molecular carriers of coded hereditary information.E) B) and C)
F) All of the above

Exam 2: Chemistry Comes Alive

In the compound H₂CO₃, what do the numbers 2 and 3 represent?

Correct AnswerverifiedThe 2 indicates that there are...View AnswerShow Answer

Carbohydrates are stored in the liver and skeletal muscles in the form of __________.

Correct AnswerverifiedA

Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?

Correct AnswerverifiedCholesterol is produ...View AnswerShow Answer

If all protons, electrons, and neutrons are alike, regardless of the atom considered, what determines the unique properties of each element?

Correct AnswerverifiedAtoms of different e...View AnswerShow Answer

Chemical properties are determined primarily by neutrons.

Correct AnswerverifiedShow Answer

The single most abundant protein in the body is ___________.

Correct AnswerverifiedC

Which property of water is demonstrated when we sweat?

Correct AnswerverifiedShow Answer

Forming glycogen as energy storage in the liver is an example of__________ .

Correct AnswerverifiedShow Answer

Are all chemical reactions reversible? If not, why aren't they all reversible?

Correct AnswerverifiedAll chemical reactions are the...View AnswerShow Answer

Select the most correct statement regarding nucleic acids.

Correct AnswerverifiedShow Answer

Which of the following is incorrectly matched?

Correct AnswerverifiedC

Choose the answer that best describes HCO3-.

Correct AnswerverifiedShow Answer

Glycogen, the storage form of glucose, is primarily stored in skeletal muscle and liver cells.

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE?

Correct AnswerverifiedShow Answer

If the atomic mass of an element is 14 and the atomic number is 6, which of the following would describe this element?

Correct AnswerverifiedShow Answer

Name at least four things you know about enzymes.

Correct Answerverified1. Most are proteins. 2. They have speci...View AnswerShow Answer

Starch is a__________ .

Correct AnswerverifiedShow Answer

Which statement about enzymes is FALSE?

Correct AnswerverifiedShow Answer

If atom X has an atomic number of 74 it would have which of the following?

Correct AnswerverifiedShow Answer

Which of the following does NOT characterize proteins?

Correct AnswerverifiedShow Answer

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The 2 indicates that there are...
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A

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Cholesterol is produ...
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Atoms of different e...
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C

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All chemical reactions are the...
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C

Choose the answer that best describes HCO₃-.

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1. Most are proteins. 2. They have speci...
View Answer

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