Question 1

Which type of molecule contains -NH2 (amino)  groups?

Accepted Answer

A)   carbohydrate
B)   triglycerides
C)   protein
D)   nucleic acid

Question 2

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 35S. After a 48-hour incubation, the 35S would most likely be found in the S. cerevisiaeʹs

Accepted Answer

A)   proteins.
B)   nucleic acids.
C)   lipids.
D)   carbohydrates.
E)   water.

Question 3

Which of the following statements is FALSE?

Accepted Answer

A)   Water freezes from the top down.
B)   Water is formed as a part of a dehydration synthesis reaction.
C)   Water molecules are formed by hydrolysis.
D)   Water is a polar molecule.
E)   Salts readily dissolve in water.

Question 4

Which type of molecule is composed of (CH₂O)  units?

Accepted Answer

A)   nucleic acid
B)   lipid
C)   carbohydrate
D)   protein

Question 5

Figure 2.1
 
-Which compound in Figure 2.1 is an ester?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   e

Question 6

The formation of ADP from ATP can be defined as a hydrolytic reaction.

Accepted Answer

A) True 
 B)False

Question 7

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

Accepted Answer

A)   thymine
B)   guanine
C)   uracil
D)   nitrogen
E)   phosphate

Question 8

What do genes consist of?

Accepted Answer

A)   carbohydrates
B)   lipids
C)   proteins
D)   nucleic acids

Question 9

Individual covalent bonds are stronger than individual ionic bonds.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is the type of bond holding K+ and I- ions in KI?

Accepted Answer

A)   ionic bond
B)   covalent bond
C)   hydrogen bond

Question 11

Starch, dextran, glycogen, and cellulose are polymers of

Accepted Answer

A)   amino acids.
B)   fatty acids.
C)   glucose.
D)   acids.
E)   nucleic acids.

Question 12

There are some forms of life on Earth that can survive without water.

Accepted Answer

A) True 
 B)False

Question 13

Figure 2.1
 
-Which compound in Figure 2.1 is an organic acid?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   e

Question 14

Structurally, ATP is most like which type of molecule?

Accepted Answer

A)   carbohydrate
B)   lipid
C)   protein
D)   nucleic acid

Question 15

Which molecule is composed of a chain of amino acids?

Accepted Answer

A)   carbohydrate
B)   lipid
C)   protein
D)   nucleic acid

Question 16

The density of liquid water is greater than the density of ice.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is the type of bond between molecules of water in a beaker of water?

Accepted Answer

A)   ionic bond
B)   covalent bond
C)   hydrogen bond

Question 18

Figure 2.1
 
-In Figure 2.1, which is an alcohol?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   e

Question 19

Most amino acids found in cells demonstrate what type of chirality?

Accepted Answer

A)   A-isomers
B)   L-isomers
C)   D-isomers
D)   C-isomers
E)   B-isomers

Exam 2: Chemical Principles

Figure 2.1 -Which compound in Figure 2.1 is an organic acid?

Correct Answer
verified

Which of the following is the type of bond between molecules of water in a beaker of water?

Correct Answer
verified

Individual covalent bonds are stronger than individual ionic bonds.

Correct Answer
verified

Which molecule is composed of a chain of amino acids?

Correct Answer
verified

Correct Answer
verified

Which of the following is the type of bond holding K+ and I- ions in KI?

Correct Answer
verified

Figure 2.1 -In Figure 2.1, which is an alcohol?

Correct Answer
verified

Structurally, ATP is most like which type of molecule?

Correct Answer
verified

Starch, dextran, glycogen, and cellulose are polymers of

Correct Answer
verified

There are some forms of life on Earth that can survive without water.

Correct Answer
verified

Which type of molecule is composed of (CH₂O) units?

Correct Answer
verified

What do genes consist of?

Correct Answer
verified

Most amino acids found in cells demonstrate what type of chirality?

Correct Answer
verified

Which type of molecule contains -NH2 (amino) groups?

Correct Answer
verified

The density of liquid water is greater than the density of ice.

Correct Answer
verified

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

Correct Answer
verified

The formation of ADP from ATP can be defined as a hydrolytic reaction.

Correct Answer
verified

Which of the following statements is FALSE?

Correct Answer
verified

Figure 2.1 -Which compound in Figure 2.1 is an ester?

Correct Answer
verified

Exam 2: Chemical Principles

Figure 2.1 -Which compound in Figure 2.1 is an organic acid?

Correct AnswerverifiedShow Answer

Which of the following is the type of bond between molecules of water in a beaker of water?

Correct AnswerverifiedShow Answer

Individual covalent bonds are stronger than individual ionic bonds.

Correct AnswerverifiedShow Answer

Which molecule is composed of a chain of amino acids?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is the type of bond holding K+ and I- ions in KI?

Correct AnswerverifiedShow Answer

Figure 2.1 -In Figure 2.1, which is an alcohol?

Correct AnswerverifiedShow Answer

Structurally, ATP is most like which type of molecule?

Correct AnswerverifiedShow Answer

Starch, dextran, glycogen, and cellulose are polymers of

Correct AnswerverifiedShow Answer

There are some forms of life on Earth that can survive without water.

Correct AnswerverifiedShow Answer

Which type of molecule is composed of (CH₂O) units?

Correct AnswerverifiedShow Answer

What do genes consist of?

Correct AnswerverifiedShow Answer

Most amino acids found in cells demonstrate what type of chirality?

Correct AnswerverifiedShow Answer

Which type of molecule contains -NH2 (amino) groups?

Correct AnswerverifiedShow Answer

The density of liquid water is greater than the density of ice.

Correct AnswerverifiedShow Answer

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

Correct AnswerverifiedShow Answer

The formation of ADP from ATP can be defined as a hydrolytic reaction.

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE?

Correct AnswerverifiedShow Answer

Figure 2.1 -Which compound in Figure 2.1 is an ester?

Correct AnswerverifiedShow 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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified