Question 1

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

Accepted Answer

A)   hemoglobin
B)   glycerol
C)   cellulose
D)   cholesterol
E)   RNAF) A) and D)
G) C) and E)

Question 2

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 B)

Question 3

A fatty acid that has at least two double bonds is called _________.

Accepted Answer

A)   steroid
B)   cholesterol
C)   unsaturated
D)   abonded
E)   organicF) None of the above
G) C) and D) C

Question 4

Which of the following is in correct order from smallest to largest?

Accepted Answer

A)   protein - amino acid - polypeptide
B)   amino acid - polypeptide - peptide
C)   peptide - polypeptide - protein
D)   protein - glycerol - amino acid
E)   disaccharide - polysaccharide - monosaccharideF) B) and D)
G) A) and B)

Question 5

In the diagram below, the monomer that serves as the subunit to creating this organic molecule category is called _________.

Accepted Answer

A)   nucleotide
B)   phosphate
C)   sugar
D)   base
E)   glucoseF) A) and B)
G) B) and E)

Question 6

Which of the following is NOT associated with proteins?

Accepted Answer

A)   made up of amino acids bonded together
B)   denaturation destroys their shape and function
C)   are used to produce DNA
D)   are found in skin, nails and claws
E)   used to produce many types of hormonesF) C) and D)
G) B) and C) C

Question 7

Which one of the following is NOT a potential danger of anabolic steroids?

Accepted Answer

A)   can result in liver problems
B)   can enhance the body's production of normal sex hormones
C)   can cause mood swings and depression
D)   can reduce sex drive
E)   can result in heart problemsF) C) and D)
G) B) and C)

Question 8

Plants store their sugar in the form of __________.

Accepted Answer

A)   protein
B)   glycogen
C)   cellulose
D)   starch
E)   glucoseF) C) and D)
G) B) and D)

Question 9

A nucleotide is made of which of the following chemical components?

Accepted Answer

A)   a nitrogen-containing base, an amino acid, and a five-carbon sugar
B)   a nitrogen-containing base, an amino acid, and a phosphate group
C)   a nitrogen-containing base, a phosphate group, and a sugar
D)   a nitrogen-containing base, a fatty acid, and an amino acid
E)   a long chain of glucose unitsF) B) and C)
G) A) and B)

Question 10

Select the INCORRECT association:

Accepted Answer

A)   carbohydrates ….used by the body for energy
B)   lipids….serve to insulate, protect, and store energy
C)   proteins….have 3 forms: monosaccharides, disaccharides and polysaccharides
D)   nucleic acids….include DNA and RNA which control our genetic inheritance
E)   carbohydrates….include examples such as glucose, sucrose and starchF) B) and C)
G) A) and B)

Question 11

Which one of the following is a function of proteins?

Accepted Answer

A)   energy storage
B)   enzymatic activity
C)   genetic coding
D)   energy source
E)   insulationF) C) and D)
G) A) and B)

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

The following figure represents which process?

Accepted Answer

A)   dehydration synthesis
B)   denaturation
C)   polyunsaturation
D)   hydrolysis
E)   combustionF) B) and C)
G) C) and E) A

Question 14

Most animals are unable to break apart the bonds that hold cellulose together. How do grazing animals then gain their nutrition from eating primarily grasses?

Accepted Answer

A)   Bacteria that are capable of breaking cellulose into glucose live in their digestive tracts.
B)   They use photosynthesis as an alternative method of making needed glucose.
C)   They consume large amounts of grain to capture the energy they need.
D)   They use cellulose directly for energy.
E)   They convert the grain to protein.F) B) and E)
G) C) and D)

Question 15

In addition to carbon an organic molecule must contain

Accepted Answer

A)   nitrogen
B)   oxygen
C)   hydrogen
D)   sulfur
E)   phosphorousF) A) and B)
G) All of the above

Question 16

What functional group makes a carbohydrate polar?

Accepted Answer

A)   -OH
B)   -NH2
C)   -SH
D)   -R
E)   -C-HF) A) and C)
G) B) and D)

Question 17

Which of the following is not an organic molecule?

Accepted Answer

A)   C12H9SO3H
B)   C9H13NO3
C)   C10H13N5O4
D)   H2NCH2CN
E)   COCl2F) A) and B)
G) A) and E)

Question 18

Digestion of sucrose, a disaccharide, results in ________.

Accepted Answer

A)   two monomers
B)   the release of functional groups
C)   three monosaccharides
D)   two glycerol units
E)   two nucleotidesF) B) and D)
G) C) and E)

Question 19

A gene in DNA is the code for ________.

Accepted Answer

A)   a sequence of amino acids
B)   a sequence of glucose molecules
C)   a sequence of fatty acids used in a fat
D)   a sequence of sugars
E)   a sequence of functional groupsF) A) and E)
G) A) and C)

Question 20

A molecule is said to be organic if it contains ________.

Accepted Answer

A)   double bonds
B)   hydrogen bonds
C)   carbon and hydrogen atoms
D)   carbon and oxygen atoms
E)   two or more atomsF) A) and B)
G) A) and E)

Exam 3: The Organic Molecules of Life

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A fatty acid that has at least two double bonds is called _________.

Correct AnswerverifiedC

Which of the following is in correct order from smallest to largest?

Correct AnswerverifiedShow Answer

In the diagram below, the monomer that serves as the subunit to creating this organic molecule category is called _________.

Correct AnswerverifiedShow Answer

Which of the following is NOT associated with proteins?

Correct AnswerverifiedC

Which one of the following is NOT a potential danger of anabolic steroids?

Correct AnswerverifiedShow Answer

Plants store their sugar in the form of __________.

Correct AnswerverifiedShow Answer

A nucleotide is made of which of the following chemical components?

Correct AnswerverifiedShow Answer

Select the INCORRECT association:

Correct AnswerverifiedShow Answer

Which one of the following is a function of proteins?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The following figure represents which process?

Correct AnswerverifiedA

Most animals are unable to break apart the bonds that hold cellulose together. How do grazing animals then gain their nutrition from eating primarily grasses?

Correct AnswerverifiedShow Answer

In addition to carbon an organic molecule must contain

Correct AnswerverifiedShow Answer

What functional group makes a carbohydrate polar?

Correct AnswerverifiedShow Answer

Which of the following is not an organic molecule?

Correct AnswerverifiedShow Answer

Digestion of sucrose, a disaccharide, results in ________.

Correct AnswerverifiedShow Answer

A gene in DNA is the code for ________.

Correct AnswerverifiedShow Answer

A molecule is said to be organic if it contains ________.

Correct AnswerverifiedShow Answer

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A

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