Question 1

Which carbohydrate is found in the exoskeleton of insects and crabs?

Accepted Answer

A)  starch
B)  chitin
C)  cellulose
D)  glycogen
E)  glycerolF) D) and E)
G) All of the above

Question 2

Waxes consist of a glycerol bonded to three long-chain fatty acids.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is true about the differences between organic and inorganic molecules?

Accepted Answer

A)  Organic molecules are living and inorganic molecules are nonliving.
B)  Organic molecules contain at least carbon and hydrogen and inorganic molecules do not.
C)  Organic molecules are relatively unstable and inorganic molecules are relatively stable.
D)  Organic molecules are held together primarily with ionic bonds and inorganic molecules are held together primarily with covalent bonds.E) C) and D)
F) All of the above

Question 4

Chitin and cellulose are both carbon-based molecules that do not spontaneously decompose.What would happen if all of the chitin and cellulose decomposers were destroyed?

Accepted Answer

Answers may vary.When chitin and cellulo...

Question 5

Which of the following represents a sulfhydryl group?

Accepted Answer

A)  SH
B)  H-N-H
C)  OH
D)  0=C-OH
E)  C=OF) C) and D)
G) A) and B)

Question 6

A polysaccharide is a polymer made up of which kind of monomers?

Accepted Answer

A)  simple sugars
B)  amino acids
C)  nucleotides
D)  alternating sugar and phosphate groups
E)  fatty acids and glycerolF) All of the above
G) A) and E)

Question 7

What is the molecular formula for five glucose (C6H12O6) molecules bonded together by dehydration synthesis?

Accepted Answer

A)  C30H50O26
B)  C30H60O30
C)  C30H52O26
D)  C30H50O30E) All of the above
F) A) and D)

Question 8

If 15% of the bases in a DNA molecule are adenine,what percentage is cytosine?

Accepted Answer

A)  15%
B)  30%
C)  70%
D)  35%E) B) and D)
F) None of the above

Question 9

Your professor shows you a computer model of a protein and asks you to identify the structural level.It appears to consist of only one polypeptide chain and has a globular shape.What is your determination?

Accepted Answer

A)  The protein has tertiary structure.
B)  The protein has secondary structure.
C)  The protein has primary structure.
D)  The protein has quaternary structure.
E)  This is not a picture of a protein.F) B) and D)
G) A) and B)

Question 10

Identify the following molecule:

Accepted Answer

A)  amino acid
B)  hydrocarbon
C)  carbohydrate
D)  alcohol
E)  cholesterolF) D) and E)
G) A) and B)

Question 11

Which of the following are characteristic of carbohydrates? Select all that apply.

Accepted Answer

A)  The monomer subunits are called amino acids.
B)  The monomer subunits are constructed primarily from carbon,hydrogen,and oxygen.
C)  Carbohydrates provide an immediate source of energy for cells.
D)  Starch is a carbohydrate found specifically in fungi.
E)  Chitin is a carbohydrate found in the exoskeletons of crabs and other similar animals.F) None of the above
G) C) and E)

Question 12

What is the molecular formula of these molecules? How do these molecules differ? Are these the same molecule?

Accepted Answer

These are different molecules,...

Question 13

Which of the following protein is correctly matched with its location?

Accepted Answer

A)  Hemoglobin is found within the red blood cells.
B)  Myosin is found within the ligaments.
C)  Actin is found within the tendons.
D)  Collagen is found within the muscle cells.
E)  Keratin is found within the cell membrane.F) None of the above
G) C) and D)

Question 14

You come across an article that discusses a new drug that interferes with hydrogen bonding during protein formation.Based on your understanding of the levels of protein organization,which of the following is a probable consequence following exposure to this new drug?

Accepted Answer

A)  The drug would prevent amino acids from bonding together which would in turn prevent the formation of the primary structure of the protein.
B)  Protein folding will arrest during the formation of secondary structure.The drug would prevent the polypeptide from forming an alpha helix or a beta sheet.
C)  Protein folding will arrest during the formation of tertiary structure.The drug would interfere with the ability of the alpha helix or beta sheet to form the bonds necessary to fold into a globular protein.
D)  The polypeptide would be unable to form a quarternary structure because it would be unable to form the bonds necessary to link up with other protein molecules.E) B) and C)
F) None of the above

Question 15

Which of the following is a function of a steroid?

Accepted Answer

A)  sex hormone
B)  transmission of genetic information
C)  long term energy storage
D)  insulation against cold
E)  protective layerF) B) and C)
G) A) and B)

Exam 3: The Chemistry of Organic Molecules

What is the molecular formula of these molecules? How do these molecules differ? Are these the same molecule?

Correct Answer
verified
These are different molecules,...
View Answer

Identify the following molecule:

Correct Answer
verified

Your professor shows you a computer model of a protein and asks you to identify the structural level.It appears to consist of only one polypeptide chain and has a globular shape.What is your determination?

Correct Answer
verified

Which of the following represents a sulfhydryl group?

Correct Answer
verified

Which of the following are characteristic of carbohydrates? Select all that apply.

Correct Answer
verified

Which carbohydrate is found in the exoskeleton of insects and crabs?

Correct Answer
verified

Waxes consist of a glycerol bonded to three long-chain fatty acids.

Correct Answer
verified

If 15% of the bases in a DNA molecule are adenine,what percentage is cytosine?

Correct Answer
verified

What is the molecular formula for five glucose (C₆H₁₂O₆) molecules bonded together by dehydration synthesis?

Correct Answer
verified

Which of the following is true about the differences between organic and inorganic molecules?

Correct Answer
verified

You come across an article that discusses a new drug that interferes with hydrogen bonding during protein formation.Based on your understanding of the levels of protein organization,which of the following is a probable consequence following exposure to this new drug?

Correct Answer
verified

Chitin and cellulose are both carbon-based molecules that do not spontaneously decompose.What would happen if all of the chitin and cellulose decomposers were destroyed?

Correct Answer
verified
Answers may vary.When chitin and cellulo...
View Answer

Which of the following is a function of a steroid?

Correct Answer
verified

A polysaccharide is a polymer made up of which kind of monomers?

Correct Answer
verified

Which of the following protein is correctly matched with its location?

Correct Answer
verified

Exam 3: The Chemistry of Organic Molecules

What is the molecular formula of these molecules? How do these molecules differ? Are these the same molecule?

Correct AnswerverifiedThese are different molecules,...View AnswerShow Answer

Identify the following molecule:

Correct AnswerverifiedShow Answer

Your professor shows you a computer model of a protein and asks you to identify the structural level.It appears to consist of only one polypeptide chain and has a globular shape.What is your determination?

Correct AnswerverifiedShow Answer

Which of the following represents a sulfhydryl group?

Correct AnswerverifiedShow Answer

Which of the following are characteristic of carbohydrates? Select all that apply.

Correct AnswerverifiedShow Answer

Which carbohydrate is found in the exoskeleton of insects and crabs?

Correct AnswerverifiedShow Answer

Waxes consist of a glycerol bonded to three long-chain fatty acids.

Correct AnswerverifiedShow Answer

If 15% of the bases in a DNA molecule are adenine,what percentage is cytosine?

Correct AnswerverifiedShow Answer

What is the molecular formula for five glucose (C6H12O6) molecules bonded together by dehydration synthesis?

Correct AnswerverifiedShow Answer

Which of the following is true about the differences between organic and inorganic molecules?

Correct AnswerverifiedShow Answer

You come across an article that discusses a new drug that interferes with hydrogen bonding during protein formation.Based on your understanding of the levels of protein organization,which of the following is a probable consequence following exposure to this new drug?

Correct AnswerverifiedShow Answer

Chitin and cellulose are both carbon-based molecules that do not spontaneously decompose.What would happen if all of the chitin and cellulose decomposers were destroyed?

Correct AnswerverifiedAnswers may vary.When chitin and cellulo...View AnswerShow Answer

Which of the following is a function of a steroid?

Correct AnswerverifiedShow Answer

A polysaccharide is a polymer made up of which kind of monomers?

Correct AnswerverifiedShow Answer

Which of the following protein is correctly matched with its location?

Correct AnswerverifiedShow Answer

Correct Answer
verified
These are different molecules,...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the molecular formula for five glucose (C₆H₁₂O₆) molecules bonded together by dehydration synthesis?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers may vary.When chitin and cellulo...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified