Question 1

The polymer shown below is comprised of what kind of subunits?

Accepted Answer

A)   nucleotides
B)   triglyercides
C)   monosaccharides
D)   bases
E)   amino acidsF) A) and D)
G) None of the above

Question 2

Wood and paper are composed of

Accepted Answer

A)   chitin.
B)   cellulose.
C)   glycogen.
D)   cholesterol.
E)   lipid.F) B) and E)
G) A) and E)

Question 3

A gene in DNA is the code for assembling a sequence of

Accepted Answer

A)   amino acids.
B)   glucose molecules.
C)   fatty acids used in a fat.
D)   sugars.
E)   functional groups.F) A) and C)
G) A) and B)

Question 4

Which of the following is a feature that proteins and polysaccharides share?

Accepted Answer

A)   They are made of repeated monomer units.
B)   They are both made from fatty acids.
C)   They both contain glucose.
D)   They are both long chains of repeated nucleotide units.
E)   They both contain phosphorus.F) A) and E)
G) A) and D)

Question 5

What is the function ofa peptide bond?

Accepted Answer

A)   joins a sodium atom to a chloride atom
B)   helps hold one water molecule to an adjacent one
C)   links oxygen to hydrogen atoms
D)   joins an amino acid to an adjacent amino acid
E)   joins nucleotide bases to one anotherF) A) and E)
G) C) and D) D

Question 6

Refer to the figure. Which of the following is true regarding the labeled plasma membrane?

Accepted Answer

A)   Parts X and Z are hydrophobic.
B)   Parts W and Z are hydrophilic.
C)   Parts X and Y are hydrophilic.
D)   Parts W and Y are hydrophobic.
E)   Parts W and X are hydrophilic.F) C) and D)
G) A) and D)

Question 7

Which of the following terms should be categorized separately from the others?

Accepted Answer

A)   muscle
B)   antibodies
C)   sucrose
D)   enzymes
E)   hairF) A) and D)
G) B) and D) C

Question 8

What functional group makes a carbohydrate hydrophilic?

Accepted Answer

A)   -OH
B)   -NH 2
C)   -SH
D)   -R
E)   -C-HF) C) and D)
G) B) and D) A

Question 9

Scientists created an enzyme that will break down any type of carbohydrate. If given to humans, which of the following could be used as a new food source?

Accepted Answer

A)   glucose
B)   glycerol
C)   cellulose
D)   cholesterol
E)   proteinF) A) and B)
G) A) and C)

Question 10

Which of the following would describe a polypeptide?

Accepted Answer

A)   fatty acids joined to glycerol by hydrolysis reactions
B)   glucose molecules joined by dehydration synthesis reactions
C)   nucleotides broken by hydrolysis reactions
D)   amino acids joined by dehydration synthesis reactions
E)   a repeated sequence of carbon and hydrogen atomsF) B) and C)
G) A) and D)

Question 11

DNA functions to ________, while RNA's function is to________.

Accepted Answer

A)   store the information to make a new organism; contain the information to make a new cell.
B)   store information to produce gametes; contain the information to make a protein.
C)   store information to produce proteins; contain the information to make DNA.
D)   stores genetic information; aids in the processing of the information within the DNA into proteins.
E)   store information to produce a new protein; contain the information to make mRNA.F) A) and E)
G) B) and D)

Question 12

Steroid are classified as

Accepted Answer

A)   proteins.
B)   lipids.
C)   carbohydrates.
D)   nucleic acids.
E)   fats.F) A) and B)
G) B) and D)

Question 13

Which of the following is a functional group present in amino acids?

Accepted Answer

A)   -PO 4
B)   -OH
C)   -NH 2
D)   -C=O
E)   -CH 3F) All of the above
G) A) and E)

Question 14

If a material mixes readily with water, it is identified as

Accepted Answer

A)   dehydrated.
B)   hydrophobic.
C)   saturated.
D)   hydrophilic.
E)   salty.F) B) and D)
G) A) and E)

Question 15

Testosterone is a lipid-based hormone; insulin is a ________-based hormone.

Accepted Answer

A)   saccharide
B)   protein
C)   steroid
D)   carbohydrate
E)   nucleic acidF) A) and D)
G) C) and D)

Question 16

Which of the following correctly lists the parts of a nucleotide of RNA?

Accepted Answer

A)   nitrogen-containing base, deoxyribose, phosphate
B)   sulfur-containing base, ribose, phosphate
C)   nitrogen-containing base, ribose, phosphate
D)   nitrogen-containing base, ribose, sulfur
E)   amino acid, glycerol, nitrogen-containing baseF) A) and D)
G) D) and E)

Question 17

What makes saturated triglycerides considerably less healthy than unsaturated ones?

Accepted Answer

A)   They taste better than other fats.
B)   They possess no double bonds between carbon atoms, which makes them more tightly packed together.
C)   Individuals tend to consume more saturated fats than unsaturated fats.
D)   Unsaturated fats are found in processed foods more frequently.
E)   They are digested more quickly by the body.F) None of the above
G) B) and E)

Question 18

DNA and RNA differ in that

Accepted Answer

A)   DNA is single-stranded and contains the sugar deoxyribose and the nitrogen-containing base thymine; RNA is double-stranded and contains sugar ribose and the nitrogen-containing base uracil.
B)   DNA is double-stranded and contains the sugar deoxyribose and the nitrogen-containing base thymine; RNA is single-stranded and contains sugar ribose and the nitrogen-containing base uracil.
C)   DNA is single-stranded and contains the sugar ribose and the nitrogen-containing base thymine; RNA is single-stranded and contains sugar deoxyribose and the nitrogen-containing base uracil.
D)   DNA is single-stranded and contains the sugar deoxyribose and the nitrogen-containing base uracil;RNA is double-stranded and contains sugar ribose and the nitrogen-containing base thymine.
E)   DNA is double-stranded and contains the sugar ribose and the nitrogen-containing base thymine; RNA is single-stranded and contains sugar deoxyribose and the nitrogen-containing base uracil.F) A) and D)
G) A) and E)

Question 19

In sickle-cell disease, malformation of red blood cells is caused by only one error in the genetic code for hemoglobin.

Accepted Answer

A) True 
 B)False

Question 20

Which functional group is both polar (hydrophilic)  and weakly acidic?

Accepted Answer

A)   -OH
B)   -NH 2
C)   -SH
D)   -COOH
E)   -PO 4F) C) and E)
G) A) and B)

Exam 3: The Organic Molecules of Life

The polymer shown below is comprised of what kind of subunits?

Correct AnswerverifiedShow Answer

Wood and paper are composed of

Correct AnswerverifiedShow Answer

A gene in DNA is the code for assembling a sequence of

Correct AnswerverifiedShow Answer

Which of the following is a feature that proteins and polysaccharides share?

Correct AnswerverifiedShow Answer

What is the function ofa peptide bond?

Correct AnswerverifiedD

Refer to the figure. Which of the following is true regarding the labeled plasma membrane?

Correct AnswerverifiedShow Answer

Which of the following terms should be categorized separately from the others?

Correct AnswerverifiedC

What functional group makes a carbohydrate hydrophilic?

Correct AnswerverifiedA

Scientists created an enzyme that will break down any type of carbohydrate. If given to humans, which of the following could be used as a new food source?

Correct AnswerverifiedShow Answer

Which of the following would describe a polypeptide?

Correct AnswerverifiedShow Answer

DNA functions to ________, while RNA's function is to________.

Correct AnswerverifiedShow Answer

Steroid are classified as

Correct AnswerverifiedShow Answer

Which of the following is a functional group present in amino acids?

Correct AnswerverifiedShow Answer

If a material mixes readily with water, it is identified as

Correct AnswerverifiedShow Answer

Testosterone is a lipid-based hormone; insulin is a ________-based hormone.

Correct AnswerverifiedShow Answer

Which of the following correctly lists the parts of a nucleotide of RNA?

Correct AnswerverifiedShow Answer

What makes saturated triglycerides considerably less healthy than unsaturated ones?

Correct AnswerverifiedShow Answer

DNA and RNA differ in that

Correct AnswerverifiedShow Answer

In sickle-cell disease, malformation of red blood cells is caused by only one error in the genetic code for hemoglobin.

Correct AnswerverifiedShow Answer

Which functional group is both polar (hydrophilic) and weakly acidic?

Correct AnswerverifiedShow Answer

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D

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C

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A

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DNA functions to , while RNA's function is to.

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