Question 1

Select which reactions will usually be irreversible regarding chemical equilibrium in human bodies.

Accepted Answer

A)  H2O + CO2 to make H2CO3 
B)  ADP + Pi to make ATP 
C)  glucose molecules joined to make glycogen 
D)  glucose to CO2 and H2O 
A)  H2O + CO2 to make H2CO3 
B)  ADP + Pi to make ATP 
C)  glucose molecules joined to make glycogen 
D)  glucose to CO2 and H2O

Question 2

The atomic number is equal to the number of _.

Accepted Answer

protons (a

Question 3

Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not a role of molecular chaperonins?

Accepted Answer

A)  promote the breakdown of damaged or denatured proteins 
B)  aid the desired folding and association process of polypeptides 
C)  act as a platform for assembling primary protein structure 
D)  help to translocate proteins and certain metal ions across cell membranes 
E)  prevent accidental, premature, or incorrect folding of polypeptide chains 
A)  promote the breakdown of damaged or denatured proteins 
B)  aid the desired folding and association process of polypeptides 
C)  act as a platform for assembling primary protein structure 
D)  help to translocate proteins and certain metal ions across cell membranes 
E)  prevent accidental, premature, or incorrect folding of polypeptide chains

Question 5

Which of the following is not considered a factor in influencing a reaction rate?

Accepted Answer

A)  temperature 
B)  time 
C)  concentration 
D)  particle size 
A)  temperature 
B)  time 
C)  concentration 
D)  particle size

Question 6

Atom X has 17 protons. How many electrons are in its valence shell?

Accepted Answer

A)  10 
B)  5 
C)  7 
D)  3 
A)  10 
B)  5 
C)  7 
D)  3

Question 7

Carbohydrates and proteins are built up from their basic building blocks by the .

Accepted Answer

A)  addition of a carbon atom between each two units 
B)  removal of a carbon atom between each two units 
C)  removal of a water molecule between each two units 
D)  addition of a water molecule between each two units 
A)  addition of a carbon atom between each two units 
B)  removal of a carbon atom between each two units 
C)  removal of a water molecule between each two units 
D)  addition of a water molecule between each two units

Question 8

All chemical reactions are theoretically reversible. Comment on this statement.

Accepted Answer

It is possible to reverse any reaction i

Question 9

Stress proteins are a type of protein called _.

Accepted Answer

A)  coenzymes 
B)  eicosanoids 
C)  cofactors 
D)  chaperones 
A)  coenzymes 
B)  eicosanoids 
C)  cofactors 
D)  chaperones

Question 10

The four elements that make up about 96% of body matter are .

Accepted Answer

A)  carbon, oxygen, hydrogen, nitrogen 
B)  nitrogen, hydrogen, calcium, sodium 
C)  sodium, potassium, hydrogen, oxygen 
D)  carbon, oxygen, phosphorus, calcium 
A)  carbon, oxygen, hydrogen, nitrogen 
B)  nitrogen, hydrogen, calcium, sodium 
C)  sodium, potassium, hydrogen, oxygen 
D)  carbon, oxygen, phosphorus, calcium

Question 11

It is the difference in the R group that makes each amino acid chemically unique.

Accepted Answer

A) True 
 B)False

Question 12

Protons and electrons exist in every atom nucleus except hydrogen. Is this statement true or false and why?

Accepted Answer

A) True 
 B)False

Question 13

How can phospholipids form a film when mixed in water?

Accepted Answer

Phospholipids have both polar

Question 14

Figure 2.1Using Figure 2.1, match the following:
-How many phosphates would AMP have attached to it?

Accepted Answer

The answer of   Figure 2.1Using Figure 2.1, match...

Question 15

A charged particle is generally called an ion or electrolyte.

Accepted Answer

A) True 
 B)False

Question 16

Sucrose is a .

Accepted Answer

A)  triglyceride 
B)  disaccharide 
C)  polysaccharide 
D)  monosaccharide 
A)  triglyceride 
B)  disaccharide 
C)  polysaccharide 
D)  monosaccharide

Question 17

Which of the following does NOT describe enzymes?

Accepted Answer

A)  Some enzymes are purely protein. 
B)  Each enzyme is chemically specific. 
C)  Some enzymes are protein plus a cofactor. 
D)  Enzymes work by raising the energy of activation. 
A)  Some enzymes are purely protein. 
B)  Each enzyme is chemically specific. 
C)  Some enzymes are protein plus a cofactor. 
D)  Enzymes work by raising the energy of activation.

Question 18

AB -A + B is an example of a(n) reaction.

Accepted Answer

The answer of AB -A + B is an example...

Question 19

Which bonds often bind different parts of a molecule into a specific three- dimensional shape?

Accepted Answer

A)  Oxygen 
B)  Hydrogen 
C)  Carbon 
D)  Amino acid 
A)  Oxygen 
B)  Hydrogen 
C)  Carbon 
D)  Amino acid

Question 20

Which statement about enzymes is false?

Accepted Answer

A)  Enzymes require contact with substrate in order to assume their active form. 
B)  Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements. 
C)  Enzymes may be damaged by high temperature. 
D)  Enzymes have the ability to accelerate reactions as much as a billion- fold. 
A)  Enzymes require contact with substrate in order to assume their active form. 
B)  Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements. 
C)  Enzymes may be damaged by high temperature. 
D)  Enzymes have the ability to accelerate reactions as much as a billion- fold.

Exam 2: Chemistry Comes Alive

Select which reactions will usually be irreversible regarding chemical equilibrium in human bodies.

The atomic number is equal to the number of _.

Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

Which of the following is not a role of molecular chaperonins?

Which of the following is not considered a factor in influencing a reaction rate?

Atom X has 17 protons. How many electrons are in its valence shell?

Carbohydrates and proteins are built up from their basic building blocks by the .

All chemical reactions are theoretically reversible. Comment on this statement.

Stress proteins are a type of protein called _.

The four elements that make up about 96% of body matter are .

It is the difference in the R group that makes each amino acid chemically unique.

Protons and electrons exist in every atom nucleus except hydrogen. Is this statement true or false and why?

How can phospholipids form a film when mixed in water?

Figure 2.1Using Figure 2.1, match the following: -How many phosphates would AMP have attached to it?

A charged particle is generally called an ion or electrolyte.

Sucrose is a .

Which of the following does NOT describe enzymes?

AB -A + B is an example of a(n) reaction.

Which bonds often bind different parts of a molecule into a specific three- dimensional shape?

Which statement about enzymes is false?

The Human Body: an Orientation

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defensives

The Respiratory System

The Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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