Question 1

Cobalt-60 is used for radiation treatments of cancer. What is the atomic number of Co-60?

Accepted Answer

The answer of Cobalt-60 is used for radiation treatments of...

Question 2

Phospholipids

Accepted Answer

A)  contain subunits called amino acids. 
B)  are water-soluble. 
C)  are a type of steroid. 
D)  are fat-soluble vitamins. 
E)  are found in cell membranes. 
A)  contain subunits called amino acids. 
B)  are water-soluble. 
C)  are a type of steroid. 
D)  are fat-soluble vitamins. 
E)  are found in cell membranes.

Question 3

The four most abundant elements in the human body are

Accepted Answer

A)  carbon, hydrogen, oxygen, and iron. 
B)  carbon, hydrogen, oxygen, and nitrogen. 
C)  calcium, hydrogen, sodium, and potassium. 
D)  carbon, oxygen, magnesium, and zinc. 
E)  carbon, sulfur, calcium, and potassium. 
A)  carbon, hydrogen, oxygen, and iron. 
B)  carbon, hydrogen, oxygen, and nitrogen. 
C)  calcium, hydrogen, sodium, and potassium. 
D)  carbon, oxygen, magnesium, and zinc. 
E)  carbon, sulfur, calcium, and potassium.

Question 4

The newly discovered element "zinferon" has a mass number of 425 and contains 125 protons. What is the atomic number of "zinferon"?

Accepted Answer

The answer of The newly discovered element "zinferon" has a...

Question 5

The presence of water in our bodies allows us to

Accepted Answer

A)  cool the body with sweat. 
B)  maintain a fairly constant body temperature. 
C)  provide an environment for chemical reactions. 
D)  keep tissues moist and reduce friction. 
E)  All of these choices are correct. 
A)  cool the body with sweat. 
B)  maintain a fairly constant body temperature. 
C)  provide an environment for chemical reactions. 
D)  keep tissues moist and reduce friction. 
E)  All of these choices are correct.

Question 6

Consider the following five terms. Which term does not belong with the other four terms?

Accepted Answer

A)  disaccharide 
B)  sucrose 
C)  lactose 
D)  maltose 
E)  glucose 
A)  disaccharide 
B)  sucrose 
C)  lactose 
D)  maltose 
E)  glucose

Question 7

Intermolecular forces

Accepted Answer

A)  form dissociated ions. 
B)  are electrostatic attractions between different molecules. 
C)  evenly distribute electrical charge among all atoms in a sample. 
D)  separate atoms and ions from one another. 
E)  are found within molecules. 
A)  form dissociated ions. 
B)  are electrostatic attractions between different molecules. 
C)  evenly distribute electrical charge among all atoms in a sample. 
D)  separate atoms and ions from one another. 
E)  are found within molecules.

Question 8

Which of the following nitrogen bases is found in RNA but not DNA?

Accepted Answer

A)  adenine 
B)  guanine 
C)  thymine 
D)  uracil 
E)  cytosine 
A)  adenine 
B)  guanine 
C)  thymine 
D)  uracil 
E)  cytosine

Question 9

Why is water involved in most metabolic reactions in the human body?

Accepted Answer

A)  It can dissolve many chemical compounds. 
B)  It can absorb and release heat without changing temperature very much. 
C)  It has a high surface tension. 
D)  Its bonds are nonpolar. 
E)  It is a solute. 
A)  It can dissolve many chemical compounds. 
B)  It can absorb and release heat without changing temperature very much. 
C)  It has a high surface tension. 
D)  Its bonds are nonpolar. 
E)  It is a solute.

Question 10

An anion is

Accepted Answer

A)  a combination of atoms held together by chemical bonds. 
B)  a positively charged ion. 
C)  a negatively charged ion. 
D)  a molecule that conducts electricity when placed in solution. 
E)  an alteration in the three-dimensional structure of a protein. 
A)  a combination of atoms held together by chemical bonds. 
B)  a positively charged ion. 
C)  a negatively charged ion. 
D)  a molecule that conducts electricity when placed in solution. 
E)  an alteration in the three-dimensional structure of a protein.

Question 11

Ribose is the

Accepted Answer

A)  storage carbohydrate in animals. 
B)  storage carbohydrate in plants. 
C)  nondigestible plant polysaccharide. 
D)  major nutrient for most body cells. 
E)  sugar found in RNA and ATP. 
A)  storage carbohydrate in animals. 
B)  storage carbohydrate in plants. 
C)  nondigestible plant polysaccharide. 
D)  major nutrient for most body cells. 
E)  sugar found in RNA and ATP.

Question 12

-The sodium chloride molecule breaks apart in water. What does "D" represent?

Accepted Answer

A)  chloride ion 
B)  dissociation 
C)  water molecule 
D)  sodium ion 
E)  salt crystal 
A)  chloride ion 
B)  dissociation 
C)  water molecule 
D)  sodium ion 
E)  salt crystal

Question 13

Which of the following is a synthesis reaction?

Accepted Answer

A)  Two amino acids are bonded together to form a dipeptide. 
B)  Sucrose is chemically separated to form one molecule of glucose and one molecule of fructose. 
C)  Sodium chloride is dissolved in water. 
D)  Several dipeptide chains are formed from digestion of a long polypeptide chain. 
E)  ATP is converted to ADP. 
A)  Two amino acids are bonded together to form a dipeptide. 
B)  Sucrose is chemically separated to form one molecule of glucose and one molecule of fructose. 
C)  Sodium chloride is dissolved in water. 
D)  Several dipeptide chains are formed from digestion of a long polypeptide chain. 
E)  ATP is converted to ADP.

Question 14

Subatomic particles located around the nucleus of an atom are

Accepted Answer

A)  protons. 
B)  electrons. 
C)  neutrons. 
D)  neutrinos. 
E)  photons. 
A)  protons. 
B)  electrons. 
C)  neutrons. 
D)  neutrinos. 
E)  photons.

Question 15

Proteins

Accepted Answer

A)  are the body's source of immediate energy. 
B)  are the building blocks of nucleotides. 
C)  provide much of the structure of body cells and tissues. 
D)  contain the genetic information of the cell. 
E)  insulate and cushion the body. 
A)  are the body's source of immediate energy. 
B)  are the building blocks of nucleotides. 
C)  provide much of the structure of body cells and tissues. 
D)  contain the genetic information of the cell. 
E)  insulate and cushion the body.

Question 16

-The sodium chloride molecule breaks apart in water. What does "C" represent?

Accepted Answer

A)  chloride ion 
B)  dissociation 
C)  water molecule 
D)  sodium ion 
E)  salt crystal 
A)  chloride ion 
B)  dissociation 
C)  water molecule 
D)  sodium ion 
E)  salt crystal

Question 17

When ionic compounds dissolve in water, their ions

Accepted Answer

A)  cling tightly together. 
B)  dissociate or separate from one another. 
C)  lose their charge. 
D)  get lost in the solvent. 
E)  settle to the bottom of the container. 
A)  cling tightly together. 
B)  dissociate or separate from one another. 
C)  lose their charge. 
D)  get lost in the solvent. 
E)  settle to the bottom of the container.

Question 18

-Phospholipids are important components of the plasma membrane. What does "E" represent on the diagram?

Accepted Answer

A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region 
A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region

Question 19

Sodium chloride is considered a(n)

Accepted Answer

A)  molecule. 
B)  compound. 
C)  molecule and a compound. 
D)  element. 
E)  ion. 
A)  molecule. 
B)  compound. 
C)  molecule and a compound. 
D)  element. 
E)  ion.

Question 20

Normal blood pH is maintained within a range of

Accepted Answer

A)  7.35 - 8.5. 
B)  7.35 - 7.45. 
C)  4.5 - 5.5. 
D)  1.0 - 14.0. 
E)  6.5 - 9.5. 
A)  7.35 - 8.5. 
B)  7.35 - 7.45. 
C)  4.5 - 5.5. 
D)  1.0 - 14.0. 
E)  6.5 - 9.5.

Exam 2: The Chemical Basis of Life

Cobalt-60 is used for radiation treatments of cancer. What is the atomic number of Co-60?

Phospholipids

The four most abundant elements in the human body are

The newly discovered element "zinferon" has a mass number of 425 and contains 125 protons. What is the atomic number of "zinferon"?

The presence of water in our bodies allows us to

Consider the following five terms. Which term does not belong with the other four terms?

Intermolecular forces

Which of the following nitrogen bases is found in RNA but not DNA?

Why is water involved in most metabolic reactions in the human body?

An anion is

Ribose is the

-The sodium chloride molecule breaks apart in water. What does "D" represent?

Which of the following is a synthesis reaction?

Subatomic particles located around the nucleus of an atom are

Proteins

-The sodium chloride molecule breaks apart in water. What does "C" represent?

When ionic compounds dissolve in water, their ions

-Phospholipids are important components of the plasma membrane. What does "E" represent on the diagram?

Sodium chloride is considered a(n)

Normal blood pH is maintained within a range of

The Human Organism

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

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