Question 1

Which of the following elements would be found in a carbohydrate?

Accepted Answer

A)   C, H
B)   C, H, O
C)   C, H, O, P
D)   C, H, O, N
E)   C, H, Cl, OF) None of the above
G) B) and C)

Question 2

How are lipids different than other categories or biological molecules?

Accepted Answer

A)   They are not seen in all living things.
B)   They do not have carbon.
C)   They are much more complex.
D)   They are not actually polymers.
E)   They are not organic.F) None of the above
G) A) and D)

Question 3

Which of the following levels of protein folding would include shapes identified as helix and pleated sheet?

Accepted Answer

A)   primary structure
B)   secondary structure
C)   tertiary structure
D)   quaternary structureE) A) and B)
F) All of the above

Question 4

Which functional group acts as a base when placed in solution?

Accepted Answer

A)   -OH
B)   -NH2
C)   -SH
D)   -COOH
E)   -PO4F) B) and C)
G) B) and D)

Question 5

Which of the following is NOT a dehydration synthesis reaction?

Accepted Answer

A)   amino acids forming proteins
B)   glycogen forming glucose molecules
C)   nucleotides forming DNA
D)   glucose units forming starch
E)   fatty acids & glycerol forming a fatF) C) and D)
G) B) and C)

Question 6

Wood and cotton cloth are composed of ________.

Accepted Answer

A)   chitin
B)   cellulose
C)   glycogen
D)   cholesterol
E)   lipidF) A) and B)
G) C) and D)

Question 7

The figure represents the formation of a _______ molecule by the process of _____________.

Accepted Answer

A)   Glycogen; hydrolysis
B)   DNA; dehydration synthesis
C)   Protein; hydrolysis
D)   Fat; dehydration synthesis
E)   Polysaccharide; hydrolysisF) A) and E)
G) C) and E)

Question 8

If a material mixes readily with water it is identified as _________.

Accepted Answer

A)   dehydrated
B)   hydrophobic
C)   saturated
D)   hydrophilic
E)   saltyF) A) and B)
G) A) and E)

Question 9

Of the following, which 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 nitrogen.F) A) and D)
G) D) and E)

Question 10

The shape of a protein is a critical factor in its function.

Accepted Answer

A) True 
 B)False

Question 11

What category of biological molecules are steroids included in?

Accepted Answer

A)   proteins
B)   lipids
C)   carbohydrates
D)   nucleic acidsE) A) and B)
F) All of the above

Question 12

Which nitrogen containing base is found in DNA but not in RNA?

Accepted Answer

A)   guanine
B)   thymine
C)   cytosine
D)   adenine
E)   uracilF) All of the above
G) A) and D)

Question 13

Atherosclerosis is associated with __________________.

Accepted Answer

A)   fats with no double bonds
B)   fats with double bonds
C)   phospholipids
D)   polyunsaturated fats
E)   long protein chainsF) A) and C)
G) D) and E)

Question 14

DNA and RNA differ in that

Accepted Answer

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

Question 15

When starch is digested, an -OH group and an -H group from a water molecule is used in hydrolysis to split the monosaccharide subunits.

Accepted Answer

A) True 
 B)False

Question 16

Which nitrogen containing base is found in RNA but not in DNA?

Accepted Answer

A)   guanine
B)   thymine
C)   cytosine
D)   adenine
E)   uracilF) B) and E)
G) A) and B)

Question 17

Which of the following would probably not be affected when a protein is denatured?

Accepted Answer

A)   primary structure
B)   secondary structure
C)   tertiary structure
D)   quaternary structure
E)   the folded shape of the proteinF) A) and D)
G) A) and E)

Question 18

The basic building block or subunit of many biological molecules is called a ________.

Accepted Answer

A)   quaternary structure
B)   polymer
C)   monomer
D)   isomer
E)   chainF) B) and E)
G) All of the above

Question 19

A polypeptide forms a pleated sheet or a helix as its tertiary structure.

Accepted Answer

A) True 
 B)False

Question 20

The "primary structure" of a protein refers to

Accepted Answer

A)   the interactions among two or more polypeptides.
B)   the alpha helix or pleated sheets.
C)   the side groups of the amino acids.
D)   the number and sequence of amino acids.
E)   the DNA nucleotide sequence that coded for it.F) D) and E)
G) A) and E)

Exam 3: The Organic Molecules of Life

The "primary structure" of a protein refers to

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Wood and cotton cloth are composed of ________.

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Which nitrogen containing base is found in DNA but not in RNA?

Correct AnswerverifiedShow Answer

DNA and RNA differ in that

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Which nitrogen containing base is found in RNA but not in DNA?

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Atherosclerosis is associated with __________________.

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What category of biological molecules are steroids included in?

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Which of the following is NOT a dehydration synthesis reaction?

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The figure represents the formation of a _______ molecule by the process of _____________.

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Which of the following elements would be found in a carbohydrate?

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Which of the following would probably not be affected when a protein is denatured?

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Which functional group acts as a base when placed in solution?

Correct AnswerverifiedShow Answer

How are lipids different than other categories or biological molecules?

Correct AnswerverifiedShow Answer

The shape of a protein is a critical factor in its function.

Correct AnswerverifiedShow Answer

When starch is digested, an -OH group and an -H group from a water molecule is used in hydrolysis to split the monosaccharide subunits.

Correct AnswerverifiedShow Answer

The basic building block or subunit of many biological molecules is called a ________.

Correct AnswerverifiedShow Answer

Which of the following levels of protein folding would include shapes identified as helix and pleated sheet?

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A polypeptide forms a pleated sheet or a helix as its tertiary structure.

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Of the following, which is a feature that proteins and polysaccharides share?

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If a material mixes readily with water it is identified as _________.

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The figure represents the formation of a _ molecule by the process of _______.

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