Question 1

Identify the following reaction: NH4OH ⇌ NH3 + H2O

Accepted Answer

A)   dehydration synthesis reaction
B)   hydrolysis reaction
C)   exchange reaction
D)   reversible reaction
E)   ionic reaction

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

Which of the following pairs is mismatched?

Accepted Answer

A)   MgSO4 ⇌ Mg2+ + SO42-  salt
B)   KH2PO4 ⇌ K+ + H2PO4-  acid
C)   HF ⇌ H+ + F- ‐ acid
D)   H2SO4 ⇌ 2H+ + SO42-  acid
E)   NaOH ⇌ Na+ + OH-  base

Question 4

Covalent bonds are always shared equally.

Accepted Answer

A) True 
 B)False

Question 5

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 6

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 32P. After a 48-hour incubation, the majority of the 32P would be found in the S. cerevisiaeʹs

Accepted Answer

A)   cell wall.
B)   water.
C)   proteins.
D)   plasma membrane.
E)   carbohydrates.

Question 7

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

Question 8

Identify the following reaction: Glucose + Fructose → Sucrose + Water

Accepted Answer

A)   dehydration synthesis reaction
B)   hydrolysis reaction
C)   exchange reaction
D)   reversible reaction
E)   ionic reaction

Question 9

All chemical reactions are, in theory, reversible.

Accepted Answer

A) True 
 B)False

Question 10

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 11

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two donʹt actively share an electron?

Accepted Answer

A)   hydrogen bond
B)   hydrophobic bond
C)   disulfide bond
D)   covalent bond
E)   ionic bond

Question 12

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

Accepted Answer

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

Question 13

Based upon the valence numbers of the elements magnesium (2)  and hydrogen (1) , predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.

Accepted Answer

A)   one
B)   two
C)   three
D)   four

Question 14

What do genes consist of?

Accepted Answer

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

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Describe how the properties of phospholipids make these molecules well suited for plasma membranes.

Accepted Answer

Phospholipids are well suited for plasma...

Question 17

Which of the following is a base?

Accepted Answer

A)   H2CO
B)   C2H5OCOOH → H+ + C2H5OCOO-
C)   NaOH → Na+ + OH-
D)   H2O → H+ + OH-
E)   C2H5OH

Question 18

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 19

Identify the following reaction: HCl + NaHCO3 → NaCl + H2CO3

Accepted Answer

A)   dehydration synthesis reaction
B)   hydrolysis reaction
C)   exchange reaction
D)   reversible reaction
E)   ionic reaction

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 2: Chemical Principles

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

Correct Answer
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Correct Answer
verified

Describe how the properties of phospholipids make these molecules well suited for plasma membranes.

Correct Answer
Answered by ExamLex AI
Phospholipids are well suited for plasma...
View Answer

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

Correct Answer
verified

Based upon the valence numbers of the elements magnesium (2) and hydrogen (1) , predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.

Correct Answer
verified

Identify the following reaction: HCl + NaHCO3 → NaCl + H₂CO3

Correct Answer
verified

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

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

Covalent bonds are always shared equally.

Correct Answer
verified

Identify the following reaction: NH4OH ⇌ NH3 + H₂O

Correct Answer
verified

Which of the following pairs is mismatched?

Correct Answer
verified

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

Correct Answer
verified

Identify the following reaction: Glucose + Fructose → Sucrose + Water

Correct Answer
verified

Which of the following is a base?

Correct Answer
verified

Correct Answer
verified

All chemical reactions are, in theory, reversible.

Correct Answer
verified

Which of the following statements is FALSE?

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

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two donʹt actively share an electron?

Correct Answer
verified

Exam 2: Chemical Principles

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Describe how the properties of phospholipids make these molecules well suited for plasma membranes.

Correct AnswerAnswered by ExamLex AIPhospholipids are well suited for plasma...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Based upon the valence numbers of the elements magnesium (2) and hydrogen (1) , predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.

Correct AnswerverifiedShow Answer

Identify the following reaction: HCl + NaHCO3 → NaCl + H2CO3

Correct AnswerverifiedShow Answer

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

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

Covalent bonds are always shared equally.

Correct AnswerverifiedShow Answer

Identify the following reaction: NH4OH ⇌ NH3 + H2O

Correct AnswerverifiedShow Answer

Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Identify the following reaction: Glucose + Fructose → Sucrose + Water

Correct AnswerverifiedShow Answer

Which of the following is a base?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

All chemical reactions are, in theory, reversible.

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE?

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

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two donʹt actively share an electron?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Phospholipids are well suited for plasma...
View Answer

Correct Answer
verified

Correct Answer
verified

Identify the following reaction: HCl + NaHCO3 → NaCl + H₂CO3

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Identify the following reaction: NH4OH ⇌ NH3 + H₂O

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
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Correct Answer
verified

Correct Answer
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