Question 1

Substrate molecules bind to enzymes at the

Accepted Answer

A)  allosteric sites. 
B)  active sites. 
C)  reaction sites. 
D)  modification sites. 
E)  none of the above 
A)  allosteric sites. 
B)  active sites. 
C)  reaction sites. 
D)  modification sites. 
E)  none of the above

Question 2

Which of the following is inorganic?

Accepted Answer

A)  hydrogen 
B)  oxygen 
C)  carbon 
D)  calcium 
E)  none of the above 
A)  hydrogen 
B)  oxygen 
C)  carbon 
D)  calcium 
E)  none of the above

Question 3

A molecule containing two atoms of hydrogen and one atom of oxygen in combination is called a(n) _________________________.

Accepted Answer

The answer of A molecule containing two atoms of hydrogen...

Question 4

Using the figure above, identify the labeled part.
-Label I: ________

Accepted Answer

The answer of   Using the figure above, identify...

Question 5

The uncharged subatomic particles are

Accepted Answer

A)  atoms. 
B)  molecules. 
C)  protons. 
D)  neutrons. 
E)  electrons. 
A)  atoms. 
B)  molecules. 
C)  protons. 
D)  neutrons. 
E)  electrons.

Question 6

Elements that form anions tend to be found on the _________________________ side of the periodic table.

Accepted Answer

The answer of Elements that form anions tend to be...

Question 7

If two pairs of electrons are shared between two atoms, what type of bond occurs?

Accepted Answer

A)  single covalent bond 
B)  double covalent bond 
C)  triple covalent bond 
D)  polar covalent bond 
E)  hydrogen bond 
A)  single covalent bond 
B)  double covalent bond 
C)  triple covalent bond 
D)  polar covalent bond 
E)  hydrogen bond

Question 8

Combinations of atoms that contain different elements are called

Accepted Answer

A)  molecules. 
B)  compounds. 
C)  mixtures. 
D)  isotopes. 
E)  none of the above 
A)  molecules. 
B)  compounds. 
C)  mixtures. 
D)  isotopes. 
E)  none of the above

Question 9

In an endergonic reaction,

Accepted Answer

A)  large molecules are broken down into smaller ones. 
B)  small molecules are assembled into larger ones. 
C)  molecules are rearranged to form new molecules. 
D)  molecules move from reactants to products and back. 
E)  energy is consumed during the reaction. 
A)  large molecules are broken down into smaller ones. 
B)  small molecules are assembled into larger ones. 
C)  molecules are rearranged to form new molecules. 
D)  molecules move from reactants to products and back. 
E)  energy is consumed during the reaction.

Question 10

A disaccharide is

Accepted Answer

A)  starch. 
B)  glycogen. 
C)  fructose. 
D)  cellulose. 
E)  sucrose. 
A)  starch. 
B)  glycogen. 
C)  fructose. 
D)  cellulose. 
E)  sucrose.

Question 11

Molecules that perform most cellular "work" are called

Accepted Answer

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

Question 12

The area around the center of an atom that contains negatively charged subatomic particles is called the electron _________________________.

Accepted Answer

The answer of The area around the center of an...

Question 13

Which of the following substances would be nearest the pH of human blood?

Accepted Answer

A)  lemon juice, pH = 5.5 
B)  urine, pH = 6 
C)  tomato juice, pH = 4 
D)  white wine, pH = 3 
E)  stomach secretions, pH = 2 
A)  lemon juice, pH = 5.5 
B)  urine, pH = 6 
C)  tomato juice, pH = 4 
D)  white wine, pH = 3 
E)  stomach secretions, pH = 2

Question 14

Which of the following is the most abundant chemical compound in the human body?

Accepted Answer

A)  water 
B)  acids 
C)  bases 
D)  salts 
E)  organic molecules 
A)  water 
B)  acids 
C)  bases 
D)  salts 
E)  organic molecules

Question 15

A DNA nucleotide consists of

Accepted Answer

A)  a five-carbon sugar and a phosphate group. 
B)  a five-carbon sugar and a nitrogen base. 
C)  a ribose sugar, a nitrogenous base, and a phosphate group. 
D)  a deoxyribose sugar, a nitrogenous base, and a phosphate group. 
E)  a five-carbon sugar and an amino acid. 
A)  a five-carbon sugar and a phosphate group. 
B)  a five-carbon sugar and a nitrogen base. 
C)  a ribose sugar, a nitrogenous base, and a phosphate group. 
D)  a deoxyribose sugar, a nitrogenous base, and a phosphate group. 
E)  a five-carbon sugar and an amino acid.

Question 16

In living cells, complex reactions proceed in a sequence of interlocking steps called a metabolic _________________________.

Accepted Answer

The answer of In living cells, complex reactions proceed in...

Question 17

Why is it life-threatening to have a low pH?

Accepted Answer

A low pH can be life-threatening because

Question 18

In a _________________________ reaction, bonds between atoms are broken and atoms are rearranged into new combinations.

Accepted Answer

The answer of In a _________________________ reaction, bonds between atoms...

Question 19

The addition of energy to start a reaction is called the energy of

Accepted Answer

A)  endergonic control. 
B)  activation. 
C)  exergonic control. 
D)  release. 
E)  none of the above 
A)  endergonic control. 
B)  activation. 
C)  exergonic control. 
D)  release. 
E)  none of the above

Question 20

How does the RNA molecule differ from a DNA molecule?

Accepted Answer

RNA is usually single stranded, DNA is d

Substrate molecules bind to enzymes at the

Which of the following is inorganic?

A molecule containing two atoms of hydrogen and one atom of oxygen in combination is called a(n) _________________________.

Using the figure above, identify the labeled part. -Label I: ________

The uncharged subatomic particles are

Elements that form anions tend to be found on the _________________________ side of the periodic table.

If two pairs of electrons are shared between two atoms, what type of bond occurs?

Combinations of atoms that contain different elements are called

In an endergonic reaction,

A disaccharide is

Molecules that perform most cellular "work" are called

The area around the center of an atom that contains negatively charged subatomic particles is called the electron _________________________.

Which of the following substances would be nearest the pH of human blood?

Which of the following is the most abundant chemical compound in the human body?

A DNA nucleotide consists of

In living cells, complex reactions proceed in a sequence of interlocking steps called a metabolic _________________________.

Why is it life-threatening to have a low pH?

In a _________________________ reaction, bonds between atoms are broken and atoms are rearranged into new combinations.

The addition of energy to start a reaction is called the energy of

How does the RNA molecule differ from a DNA molecule?

An Introduction to Anatomy and Physiology

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

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Exam 2: The Chemical Level of Organization

Substrate molecules bind to enzymes at the

Which of the following is inorganic?

A molecule containing two atoms of hydrogen and one atom of oxygen in combination is called a(n) _________________________.

Using the figure above, identify the labeled part. -Label I: ________

The uncharged subatomic particles are

Elements that form anions tend to be found on the _________________________ side of the periodic table.

If two pairs of electrons are shared between two atoms, what type of bond occurs?

Combinations of atoms that contain different elements are called

In an endergonic reaction,

A disaccharide is

Molecules that perform most cellular "work" are called

The area around the center of an atom that contains negatively charged subatomic particles is called the electron _________________________.

Which of the following substances would be nearest the pH of human blood?

Which of the following is the most abundant chemical compound in the human body?

A DNA nucleotide consists of

In living cells, complex reactions proceed in a sequence of interlocking steps called a metabolic _________________________.

Why is it life-threatening to have a low pH?

In a _________________________ reaction, bonds between atoms are broken and atoms are rearranged into new combinations.

The addition of energy to start a reaction is called the energy of

How does the RNA molecule differ from a DNA molecule?

An Introduction to Anatomy and Physiology

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

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