Question 1

List the function of proteins that are formed from a combination of amino acids.

Accepted Answer

Functions of proteins include:
1.support

Question 2

In an atom,the number of protons always equals the number

Accepted Answer

A) of electrons. 
B) of neutrons. 
C) of neutrons and protons. 
D) of quarks. 
E) of neutrinos. 
A) of electrons. 
B) of neutrons. 
C) of neutrons and protons. 
D) of quarks. 
E) of neutrinos.

Question 3

An element cannot be broken down by chemical means.

Accepted Answer

A) True 
 B)False

Question 4

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

Accepted Answer

A) a hydrolysis reaction. 
B) a dehydration reaction. 
C) monomerization. 
D) emulsification. 
E) disassembly. 
A) a hydrolysis reaction. 
B) a dehydration reaction. 
C) monomerization. 
D) emulsification. 
E) disassembly.

Question 5

NaCl is not an organic molecule.

Accepted Answer

A) True 
 B)False

Question 6

When an ATP molecule is used to supply energy,which of the following occurs?

Accepted Answer

A) a phosphate bond is added 
B) a phosphate bond is broken 
C) oxygen is removed 
D) oxygen is added 
E) an adenine is added 
A) a phosphate bond is added 
B) a phosphate bond is broken 
C) oxygen is removed 
D) oxygen is added 
E) an adenine is added

Question 7

Which of the following is not a monosaccharide?

Accepted Answer

A) glucose 
B) fructose 
C) galactose 
D) maltose 
E) None of these are monosaccharides. 
A) glucose 
B) fructose 
C) galactose 
D) maltose 
E) None of these are monosaccharides.

Question 8

Isotopes of an element differ due to the number of

Accepted Answer

A) protons. 
B) neutrons. 
C) electrons. 
D) both protons and electrons. 
E) neutrinos. 
A) protons. 
B) neutrons. 
C) electrons. 
D) both protons and electrons. 
E) neutrinos.

Question 9

Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

Accepted Answer

A) secondary structure 
B) primary structure 
C) tertiary structure 
D) quaternary structure 
E) pentagonal structure 
A) secondary structure 
B) primary structure 
C) tertiary structure 
D) quaternary structure 
E) pentagonal structure

Question 10

The reason water is polar is because

Accepted Answer

A) in polar molecules atoms share electrons evenly. 
B) the oxygen atom is larger than the hydrogen atom. 
C) hydrophilic molecules interact with water. 
D) hydrophobic molecules do not interact with water. 
E) there is a transfer of electrons from the hydrogen to the oxygen. 
A) in polar molecules atoms share electrons evenly. 
B) the oxygen atom is larger than the hydrogen atom. 
C) hydrophilic molecules interact with water. 
D) hydrophobic molecules do not interact with water. 
E) there is a transfer of electrons from the hydrogen to the oxygen.

Question 11

Which type of bond is responsible for holding two water molecules together creating the properties of water?

Accepted Answer

A) hydrogen 
B) covalent 
C) ionic 
D) polar 
E) double covalent 
A) hydrogen 
B) covalent 
C) ionic 
D) polar 
E) double covalent

Question 12

When two amino acids combine via a dehydration reaction,

Accepted Answer

A) a peptide bond is formed. 
B) the R groups are lost. 
C) water is added to begin the reaction. 
D) the carboxyl group of each join together. 
E) the amino group of each join together. 
A) a peptide bond is formed. 
B) the R groups are lost. 
C) water is added to begin the reaction. 
D) the carboxyl group of each join together. 
E) the amino group of each join together.

Question 13

List the properties of water.

Accepted Answer

1.Water has a high heat capaci

Question 14

William noticed water mysteriously climbing up a capillary tube.This is an example of which property of water?

Accepted Answer

A) Frozen water is less dense than liquid water. 
B) The temperature of liquid water rises and falls slowly. 
C) Water molecules are cohesive. 
D) Water has a high heat of vaporization. 
E) Water is a solvent. 
A) Frozen water is less dense than liquid water. 
B) The temperature of liquid water rises and falls slowly. 
C) Water molecules are cohesive. 
D) Water has a high heat of vaporization. 
E) Water is a solvent.

Question 15

Which of the following is not a function of proteins?

Accepted Answer

A) quick energy 
B) support 
C) transport 
D) enzymes 
E) motion 
A) quick energy 
B) support 
C) transport 
D) enzymes 
E) motion

Question 16

Fats are usually of animal origin while oils are usually of plant origin.

Accepted Answer

A) True 
 B)False

Question 17

Which polysacccharide is stored as an energy source in the body of animals?

Accepted Answer

A) glycogen 
B) glucose 
C) cellulose 
D) starch 
E) chitin 
A) glycogen 
B) glucose 
C) cellulose 
D) starch 
E) chitin

Question 18

The function of RNA in the body is to store the genetic information in the nucleus.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Accepted Answer

A) Water is liquid at room temperature. 
B) Water has a high heat of vaporization. 
C) The temperature of liquid water rises and falls slowly. 
D) Frozen water is less dense than liquid water. 
E) Water molecules are cohesivE. 
A) Water is liquid at room temperature. 
B) Water has a high heat of vaporization. 
C) The temperature of liquid water rises and falls slowly. 
D) Frozen water is less dense than liquid water. 
E) Water molecules are cohesivE.

Question 20

What makes each amino acid unique?

Accepted Answer

A) the central carbon 
B) the R group 
C) the amino group 
D) the carboxyl group 
E) the carbon ring 
A) the central carbon 
B) the R group 
C) the amino group 
D) the carboxyl group 
E) the carbon ring

Exam 2: Chemistry of Life

List the function of proteins that are formed from a combination of amino acids.

In an atom,the number of protons always equals the number

An element cannot be broken down by chemical means.

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

NaCl is not an organic molecule.

When an ATP molecule is used to supply energy,which of the following occurs?

Which of the following is not a monosaccharide?

Isotopes of an element differ due to the number of

Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

The reason water is polar is because

Which type of bond is responsible for holding two water molecules together creating the properties of water?

When two amino acids combine via a dehydration reaction,

List the properties of water.

William noticed water mysteriously climbing up a capillary tube.This is an example of which property of water?

Which of the following is not a function of proteins?

Fats are usually of animal origin while oils are usually of plant origin.

Which polysacccharide is stored as an energy source in the body of animals?

The function of RNA in the body is to store the genetic information in the nucleus.

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

What makes each amino acid unique?

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