Question 1

Fatty acids consist mainly of carbon and hydrogen,and so fatty acids are

Accepted Answer

A) nonpolar and do not dissolve in water. 
B) nonpolar and dissolve in water. 
C) polar and do not dissolve in water. 
D) polar and dissolve in water. 
A) nonpolar and do not dissolve in water. 
B) nonpolar and dissolve in water. 
C) polar and do not dissolve in water. 
D) polar and dissolve in water.

Question 2

When biological molecules engage in condensation,such reactions are _________ reactions.

Accepted Answer

A) synthesis 
B) hydrolysis 
C) catabolic 
D) amphipathic 
E) ergonomic 
A) synthesis 
B) hydrolysis 
C) catabolic 
D) amphipathic 
E) ergonomic

Question 3

When solution concentration is measured in moles of solute per kilogram of solvent,that measurement is known as _________.

Accepted Answer

The answer of When solution concentration is measured in moles...

Question 4

A molecule with polar and nonpolar parts that only partially dissolves in water is described as __________.

Accepted Answer

The answer of A molecule with polar and nonpolar parts...

Question 5

An ion is an atom or group of atoms that has

Accepted Answer

A) a different number of neutrons than most atoms of that element. 
B) lost or gained a proton. 
C) lost or gained an electron. 
D) a biological half-life due to radioactive decay. 
A) a different number of neutrons than most atoms of that element. 
B) lost or gained a proton. 
C) lost or gained an electron. 
D) a biological half-life due to radioactive decay.

Question 6

Molarity is measured in the units of moles solute/L solution.

Accepted Answer

A) True 
 B)False

Question 7

The number of neutrons in an atom can be determined by

Accepted Answer

A) subtracting the atomic number from the atomic mass. 
B) subtracting the atomic mass from the atomic number. 
C) adding the atomic mass to the atomic number. 
D) adding the number of protons to the number of electrons. 
E) adding the number of protons to the atomic number. 
A) subtracting the atomic number from the atomic mass. 
B) subtracting the atomic mass from the atomic number. 
C) adding the atomic mass to the atomic number. 
D) adding the number of protons to the number of electrons. 
E) adding the number of protons to the atomic number.

Question 8

The amount of energy (measured in calories)required to increase the temperature of 1 gram of a substance by 1 degree Celsius is known as ____________.

Accepted Answer

The answer of The amount of energy (measured in calories)required...

Question 9

Water has a

Accepted Answer

A) high specific heat,and this tends to cause large amounts of sweating. 
B) high specific heat,and this tends to keep body temperature relatively constant. 
C) low specific heat,and this tends to lead to variability in body temperature. 
D) low specific heat,and this tends to minimize sweating. 
E) low specific heat,and this tends to result in chills and shivering. 
A) high specific heat,and this tends to cause large amounts of sweating. 
B) high specific heat,and this tends to keep body temperature relatively constant. 
C) low specific heat,and this tends to lead to variability in body temperature. 
D) low specific heat,and this tends to minimize sweating. 
E) low specific heat,and this tends to result in chills and shivering.

Question 10

Compared to a solution with a pH of 7,a solution with a pH of 4 is

Accepted Answer

A) more acidic and has a 1,000-fold increase in [H+]. 
B) more acidic and has a 300-fold increase in [H+]. 
C) more basic and has a 1,000-fold increase in [H+]. 
D) more basic and has a 300-fold increase in [H+]. 
E) more basic and has a 300-fold decrease in [H+]. 
A) more acidic and has a 1,000-fold increase in [H+]. 
B) more acidic and has a 300-fold increase in [H+]. 
C) more basic and has a 1,000-fold increase in [H+]. 
D) more basic and has a 300-fold increase in [H+]. 
E) more basic and has a 300-fold decrease in [H+].

Question 11

In general,the number of electrons that would fill an atom's outer shell and make it nonreactive is _______.or
or

Accepted Answer

The answer of In general,the number of electrons that would...

Question 12

Blood has been described as an example of a suspension,and soda has been described as a solution.Define these two categories of mixtures and provide different examples of each type.In the examples you provide,explain the molecular properties (approximate size,polarity)of the substances that mix with water.

Accepted Answer

Common examples of suspensions include m

Question 13

In some proteins,disulfide covalent bonds form between two _________ amino acids.

Accepted Answer

The answer of In some proteins,disulfide covalent bonds form between...

Question 14

The two fatty acids within a phospholipid molecule make up its

Accepted Answer

A) nonpolar heads. 
B) polar heads. 
C) nonpolar tails. 
D) polar tails. 
A) nonpolar heads. 
B) polar heads. 
C) nonpolar tails. 
D) polar tails.

Question 15

The three forms of matter are

Accepted Answer

A) air,water,and solids. 
B) solids,liquids,and gases. 
C) blood,bone,and air. 
D) vapor,water,and solid. 
A) air,water,and solids. 
B) solids,liquids,and gases. 
C) blood,bone,and air. 
D) vapor,water,and solid.

Question 16

Which of the following is not one of the four most common elements in the body

Accepted Answer

A) Oxygen 
B) Nitrogen 
C) Hydrogen 
D) Carbon 
E) Calcium 
A) Oxygen 
B) Nitrogen 
C) Hydrogen 
D) Carbon 
E) Calcium

Question 17

When a nonpolar molecule is placed in water,it will

Accepted Answer

A) neither dissolve nor carry electrical current. 
B) dissolve and carry electrical current. 
C) dissociate and carry electrical current. 
D) carry electrical current but not dissolve or dissociate. 
A) neither dissolve nor carry electrical current. 
B) dissolve and carry electrical current. 
C) dissociate and carry electrical current. 
D) carry electrical current but not dissolve or dissociate.

Question 18

When two atoms with very different electronegativity share electrons a polar covalent bond is formed.

Accepted Answer

A) True 
 B)False

Question 19

When a strong acid is placed in water,it

Accepted Answer

A) does not dissolve or dissociate. 
B) dissolves but does not dissociate. 
C) dissolves and dissociates. 
D) dissociates,but does not dissolve. 
A) does not dissolve or dissociate. 
B) dissolves but does not dissociate. 
C) dissolves and dissociates. 
D) dissociates,but does not dissolve.

Question 20

Van der Waals forces occur between nonpolar molecules and are weaker attractions than covalent bonds.

Accepted Answer

A) True 
 B)False

Exam 2: Atoms,Ions,and Molecules

Fatty acids consist mainly of carbon and hydrogen,and so fatty acids are

When biological molecules engage in condensation,such reactions are _________ reactions.

When solution concentration is measured in moles of solute per kilogram of solvent,that measurement is known as _________.

A molecule with polar and nonpolar parts that only partially dissolves in water is described as __________.

An ion is an atom or group of atoms that has

Molarity is measured in the units of moles solute/L solution.

The number of neutrons in an atom can be determined by

The amount of energy (measured in calories)required to increase the temperature of 1 gram of a substance by 1 degree Celsius is known as ____________.

Water has a

Compared to a solution with a pH of 7,a solution with a pH of 4 is

In general,the number of electrons that would fill an atom's outer shell and make it nonreactive is _______.or or

In some proteins,disulfide covalent bonds form between two _________ amino acids.

The two fatty acids within a phospholipid molecule make up its

The three forms of matter are

Which of the following is not one of the four most common elements in the body

When a nonpolar molecule is placed in water,it will

When two atoms with very different electronegativity share electrons a polar covalent bond is formed.

When a strong acid is placed in water,it

Van der Waals forces occur between nonpolar molecules and are weaker attractions than covalent bonds.

The Sciences of Anatomy and Physiology

Energy,Chemical Reactions,and Cellular Respiration

Biology of the Cell

Tissue Organization

Integumentary System

Skeletal System: Bone Structure and Function

Skeletal System: Axial and Appendicular Skeleton

Skeletal System: Articulations

Muscle Tissue

Muscular System: Axial and Appendicular Muscles

Nervous System: Nervous Tissue

Nervous System: Brain and Cranial Nerves

Nervous System: Spinal Cord and Spinal Nerves

Nervous System: Autonomic Nervous System

Nervous System: Senses

Endocrine System

Cardiovascular System: Blood

Cardiovascular System: Heart

Cardiovascular System: Vessels and Circulation

Lymphatic System

Immune System and the Bodys Defense

Respiratory System

Urinary System

Fluid and Electrolytes

Digestive System

Nutrition and Metabolism

Reproductive System

Development,Pregnancy,and Heredity

Filters