Question 1

Which carbohydrate is found in the cell walls of plants?

Accepted Answer

A)   starch
B)   chitin
C)   cellulose
D)   glycogen
E)   glycerolF) A) and B)
G) A) and E)

Question 2

Which of the following are structural carbohydrate molecules?

Accepted Answer

A)   starch and glycogen
B)   starch and cellulose
C)   glycogen and cellulose
D)   cellulose and chitin
E)   glycogen and chitinF) A) and E)
G) A) and B)

Question 3

Organic molecules are those that contain at least

Accepted Answer

A)   carbon.
B)   carbon and oxygen.
C)   carbon and hydrogen.
D)   carbon, oxygen, and hydrogen.E) All of the above
F) B) and D)

Question 4

Fish sperm is composed mostly of the male fish's DNA. If we tested a sample chemically, we should find relatively high amounts of

Accepted Answer

A)   nitrogenous bases, sugar, and phosphate groups.
B)   phospholipids and steroids.
C)   amino acids and unsaturated fats.
D)   triglycerides and ATP.
E)   globular proteins and stored fats.F) B) and D)
G) C) and D)

Question 5

Construct a portion of cell membrane using the typical phospholipid symbol. Indicate the location of the cytoplasm and outside of the cell. Explain how the chemical characteristics of phospholipids molecules dictate membrane structure and cause it to be fluid in nature.

Accepted Answer

A phospholipids bilayer forms due to the...

Question 6

What is the molecular formula for 5 glucose molecules?

Accepted Answer

A)   C30H50O25
B)   C30H60O30
C)   C30H52O26
D)   C6H24O12E) A) and B)
F) C) and D)

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Chitin and cellulose are molecules that do not spontaneously break down but can be digested by bacteria and some other microorganisms. Since carbon is not among the most common elements in the earth's crust, what would happen if all of the chitin-digesting and cellulose-digesting organisms on the earth were destroyed?

Accepted Answer

Answers may vary. When chitin and cellul...

Question 9

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

Accepted Answer

A)   starch
B)   chitin
C)   cellulose
D)   glycogen
E)   glycerolF) A) and E)
G) A) and D)

Question 10

What are the basic structures that make up a nucleotide?

Accepted Answer

A)   pentose sugar, phosphate and nitrogen-containing base
B)   pentose sugar, nitrate and phosphorus-containing base
C)   ribose sugar, phosphate and nitrogen-containing base
D)   hydroxide group, phosphate and nitrogen-containing base
E)   pentose sugar, sodium and nitrogen-containing baseF) A) and B)
G) A) and E)

Question 11

Glucose (C6H12O6)  can exist as both an open-chain form and a closed-ring form. Before 1900, glucose was only thought to occur as an open chain. Now we know that over 99 percent of the time, glucose occurs in the closed-ring form. What possible difference between these forms would give chemists a clue that the open-chain form was not present?

Accepted Answer

A)   Open-chain molecules can form polymers and glucose does not.
B)   Only open-chain forms can undergo condensation, which does not occur with glucose.
C)   An open chain presents ends with functional groups (in this case aldehyde) , and glucose failed to undergo typical aldehyde reactions; a phenomenon that could be explained by having no end functional group in a ring structure.
D)   Because glucose is solid at room temperature, it must have saturated hydrocarbon chains.
E)   Glucose could not be "denatured" so it must be a tight chain.F) A) and E)
G) B) and D)

Question 12

Due to an increased risk of heart disease many doctors have suggested shifting our diet to include more oils instead of fats. As you cook dinner tonight the recipe calls for 2 tbs of oil. What is the most likely source of the oil you should use in preparing your meal?

Accepted Answer

A)   canola or olives
B)   bees wax distilled down to an oil form
C)   melted butter
D)   lard that was left out at room temperature
E)   none of these choices are oilsF) A) and E)
G) B) and E)

Question 13

Which statement is true about RNA?

Accepted Answer

A)   It contains adenine paired to thymine.
B)   One of the bases from DNA is replaced by uracil.
C)   It contains the sugar deoxyribose.
D)   Its nucleotides contain twice as many phosphate groups as DNA's nucleotides.
E)   It is a double-stranded molecule.F) B) and E)
G) A) and B)

Question 14

If an animal needed to store energy for long-term use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage?

Accepted Answer

A)   fructose and glucose in the form of honey
B)   high-calorie fat molecules
C)   complex cellulose molecules
D)   starch
E)   glycogen with extensive side branches of glucoseF) A) and E)
G) B) and D)

Question 15

Carbon can form covalent bonds with as many as four other atoms.

Accepted Answer

A) True 
 B)False

Exam 3: The Chemistry of Organic Molecules

Which of the following are structural carbohydrate molecules?

Correct Answer
verified

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

Correct Answer
verified

Construct a portion of cell membrane using the typical phospholipid symbol. Indicate the location of the cytoplasm and outside of the cell. Explain how the chemical characteristics of phospholipids molecules dictate membrane structure and cause it to be fluid in nature.

Correct Answer
verified
A phospholipids bilayer forms due to the...
View Answer

Which statement is true about RNA?

Correct Answer
verified

What is the molecular formula for 5 glucose molecules?

Correct Answer
verified

Due to an increased risk of heart disease many doctors have suggested shifting our diet to include more oils instead of fats. As you cook dinner tonight the recipe calls for 2 tbs of oil. What is the most likely source of the oil you should use in preparing your meal?

Correct Answer
verified

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

Correct Answer
verified

Organic molecules are those that contain at least

Correct Answer
verified

Which carbohydrate is found in the cell walls of plants?

Correct Answer
verified

Fish sperm is composed mostly of the male fish's DNA. If we tested a sample chemically, we should find relatively high amounts of

Correct Answer
verified

What are the basic structures that make up a nucleotide?

Correct Answer
verified

Carbon can form covalent bonds with as many as four other atoms.

Correct Answer
verified

If an animal needed to store energy for long-term use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage?

Correct Answer
verified

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

Correct Answer
verified

Exam 3: The Chemistry of Organic Molecules

Which of the following are structural carbohydrate molecules?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Construct a portion of cell membrane using the typical phospholipid symbol. Indicate the location of the cytoplasm and outside of the cell. Explain how the chemical characteristics of phospholipids molecules dictate membrane structure and cause it to be fluid in nature.

Correct AnswerverifiedA phospholipids bilayer forms due to the...View AnswerShow Answer

Which statement is true about RNA?

Correct AnswerverifiedShow Answer

What is the molecular formula for 5 glucose molecules?

Correct AnswerverifiedShow Answer

Due to an increased risk of heart disease many doctors have suggested shifting our diet to include more oils instead of fats. As you cook dinner tonight the recipe calls for 2 tbs of oil. What is the most likely source of the oil you should use in preparing your meal?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Organic molecules are those that contain at least

Correct AnswerverifiedShow Answer

Which carbohydrate is found in the cell walls of plants?

Correct AnswerverifiedShow Answer

Fish sperm is composed mostly of the male fish's DNA. If we tested a sample chemically, we should find relatively high amounts of

Correct AnswerverifiedShow Answer

What are the basic structures that make up a nucleotide?

Correct AnswerverifiedShow Answer

Carbon can form covalent bonds with as many as four other atoms.

Correct AnswerverifiedShow Answer

If an animal needed to store energy for long-term use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A phospholipids bilayer forms due to the...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified