Question 1

Proteins that can carry out catalysis in organisms are called ______.

Accepted Answer

A)  catalysts
B)  reactants
C)  cofactors
D)  enzymesE) A) and B)
F) A) and C)

Question 2

Which of the following is not a macromolecule?

Accepted Answer

A)  carbohydrates
B)  water
C)  nucleic acids
D)  proteins
E)  lipidsF) C) and D)
G) A) and D)

Question 3

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a

Accepted Answer

A)  carbohydrate.
B)  protein.
C)  DNA.
D)  lipiD.E) A) and D)
F) A) and C)

Question 4

A chain of amino acids linked together end-to-end can only be found in a

Accepted Answer

A)  membrane lipid.
B)  nucleic acid.
C)  polysaccharide.
D)  polypeptide.
E)  starch.F) A) and C)
G) C) and D)

Question 5

Fructose and galactose all have the same six carbon atoms,twelve hydrogen atoms,and six oxygen atoms,just as glucose.A friend of yours says to you,"Since two of those sugars have the same number of atoms,they should all have the same name." You answer,"Yes.They do have the same atoms and the numbers are the same;however,

Accepted Answer

A)  they are all polysaccharides and have slightly different functions within organisms and therefore have different names."
B)  they are named differently because of their quaternary structures,which is very important in carbohydrates,especially glucose."
C)  they are named differently because when heated above their optimal temperature they become denatured and will not react with their substrates."
D)  they are named differently because they are involved in different DNA nucleotide formation."
E)  they are named differently because they are alternate forms of the monosaccharide,glucosE."F) B) and D)
G) A) and C)

Question 6

All of the following are examples of functional groups in cells except

Accepted Answer

A)  -CH3.
B)  -COOH.
C)  -H2O.
D)  -NH2.
E)  -OH.F) A) and E)
G) C) and E)

Question 7

Chitin,a modified form of cellulose,is not only cross-linked with proteins but also its glucose units are modified with atoms of

Accepted Answer

A)  nitrogen.
B)  hydrogen.
C)  oxygen.
D)  sulfur.
E)  phosphorous.F) C) and D)
G) B) and E)

Question 8

Proteins are created with

Accepted Answer

A)  phosphodiester bonds
B)  peptide bonds
C)  a phosphate and two fatty acids bonded to glycerol
D)  sugar polymersE) A) and D)
F) A) and B)

Question 9

Which of the following best describes an enzyme?

Accepted Answer

A)  reacts with other enzymes to form a product
B)  catalyzes chemical reactions
C)  structural protein
D)  inorganic cofactorE) All of the above
F) B) and D)

Question 10

Nucleic acids are polymers formed of building blocks that contain

Accepted Answer

A)  amino acids.
B)  fatty acids.
C)  sugars.
D)  rings of nitrogen bases.
E)  peptide bonds.F) A) and E)
G) A) and B)

Question 11

Biological membranes contain bilayers of which of the following lipids?

Accepted Answer

A)  phospholipids
B)  oils
C)  prostaglandins
D)  triglycerides
E)  cholesterolF) C) and E)
G) A) and E)

Question 12

Carbohydrates are created with

Accepted Answer

A)  phosphodiester bonds
B)  peptide bonds
C)  a phosphate and two fatty acids bonded to glycerol
D)  sugar polymersE) None of the above
F) All of the above

Question 13

Three fatty acids bonded together with a glycerol are found in a(n)

Accepted Answer

A)  alcohol.
B)  enzyme.
C)  phospholipid.
D)  chlorophyll pigment.
E)  triglyceridE.F) B) and D)
G) None of the above

Question 14

Which of the following is not a type of lipid?

Accepted Answer

A)  fat
B)  chitin
C)  cholesterol
D)  terpenes
E)  prostaglandinsF) B) and D)
G) All of the above

Question 15

A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as _______.

Accepted Answer

A)  chitin
B)  glucose
C)  protein
D)  glycogenE) A) and B)
F) A) and C)

Question 16

Organic molecules contain a specific carbon-based core to which specific groups of atoms with definite chemical properties are attached.These groups of atoms are called ________ groups.

Accepted Answer

A)  carbon
B)  extension
C)  functional
D)  chemicalE) A) and B)
F) B) and D)

Question 17

Denaturation,a process in which a protein loses its native shape and function,is likely to be caused by all of the following except

Accepted Answer

A)  being transported from one cell to another in a living organism.
B)  pH change.
C)  temperature change.
D)  ionic concentration change.
E)  increase in hydrogen ion concentration.F) D) and E)
G) B) and D)

Question 18

Which of the following would not contain polymers of b-glucose?

Accepted Answer

A)  cellulose
B)  wood
C)  paper
D)  amyloseE) All of the above
F) B) and C)

Question 19

The specific amino acid sequence in a protein is its

Accepted Answer

A)  zero order structure.
B)  primary structure.
C)  secondary structure.
D)  tertiary structure.
E)  quaternary structurE.F) A) and D)
G) C) and D)

Question 20

The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule.A reaction referred to as ________________.

Accepted Answer

A)  conjunction
B)  hydration
C)  dehydration
D)  condensationE) All of the above
F) A) and B)

Exam 3: The Chemical Building Blocks of Life

Which of the following is not a type of lipid?

Correct Answer
verified

The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule.A reaction referred to as ________________.

Correct Answer
verified

Nucleic acids are polymers formed of building blocks that contain

Correct Answer
verified

Which of the following is not a macromolecule?

Correct Answer
verified

The specific amino acid sequence in a protein is its

Correct Answer
verified

A chain of amino acids linked together end-to-end can only be found in a

Correct Answer
verified

Correct Answer
verified

Proteins that can carry out catalysis in organisms are called ______.

Correct Answer
verified

Organic molecules contain a specific carbon-based core to which specific groups of atoms with definite chemical properties are attached.These groups of atoms are called ________ groups.

Correct Answer
verified

Denaturation,a process in which a protein loses its native shape and function,is likely to be caused by all of the following except

Correct Answer
verified

All of the following are examples of functional groups in cells except

Correct Answer
verified

Which of the following would not contain polymers of b-glucose?

Correct Answer
verified

Biological membranes contain bilayers of which of the following lipids?

Correct Answer
verified

Three fatty acids bonded together with a glycerol are found in a(n)

Correct Answer
verified

A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as _______.

Correct Answer
verified

Which of the following best describes an enzyme?

Correct Answer
verified

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a

Correct Answer
verified

Carbohydrates are created with

Correct Answer
verified

Proteins are created with

Correct Answer
verified

Chitin,a modified form of cellulose,is not only cross-linked with proteins but also its glucose units are modified with atoms of

Correct Answer
verified

Exam 3: The Chemical Building Blocks of Life

Which of the following is not a type of lipid?

Correct AnswerverifiedShow Answer

The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule.A reaction referred to as ________________.

Correct AnswerverifiedShow Answer

Nucleic acids are polymers formed of building blocks that contain

Correct AnswerverifiedShow Answer

Which of the following is not a macromolecule?

Correct AnswerverifiedShow Answer

The specific amino acid sequence in a protein is its

Correct AnswerverifiedShow Answer

A chain of amino acids linked together end-to-end can only be found in a

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Proteins that can carry out catalysis in organisms are called ______.

Correct AnswerverifiedShow Answer

Organic molecules contain a specific carbon-based core to which specific groups of atoms with definite chemical properties are attached.These groups of atoms are called ________ groups.

Correct AnswerverifiedShow Answer

Denaturation,a process in which a protein loses its native shape and function,is likely to be caused by all of the following except

Correct AnswerverifiedShow Answer

All of the following are examples of functional groups in cells except

Correct AnswerverifiedShow Answer

Which of the following would not contain polymers of b-glucose?

Correct AnswerverifiedShow Answer

Biological membranes contain bilayers of which of the following lipids?

Correct AnswerverifiedShow Answer

Three fatty acids bonded together with a glycerol are found in a(n)

Correct AnswerverifiedShow Answer

A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as _______.

Correct AnswerverifiedShow Answer

Which of the following best describes an enzyme?

Correct AnswerverifiedShow Answer

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a

Correct AnswerverifiedShow Answer

Carbohydrates are created with

Correct AnswerverifiedShow Answer

Proteins are created with

Correct AnswerverifiedShow Answer

Chitin,a modified form of cellulose,is not only cross-linked with proteins but also its glucose units are modified with atoms of

Correct AnswerverifiedShow Answer

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