Question 1

The nucleus of unstable _____ of an element will decay leading to emission of radiation.

Accepted Answer

A) compounds 
B) cations 
C) anions 
D) isotopes 
E) molecules 
A) compounds 
B) cations 
C) anions 
D) isotopes 
E) molecules D

Question 2

Describe the functions of water in the body.

Accepted Answer

Water is a Solvent that allows transportation of Solutes.Water acts in hydrolysis reactions to split reactants.Water can transport heat in the body and can be used to release heat from the body as occurs in sweating.Water is used as a lubricant,particularly in serous fluids like those surrounding the lungs and on mucosal membranes like those lining the gastrointestinal tract.

Question 3

Which of the labeled structures are found in DNA but not RNA?
1 A
2 B
3 C
4 E

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 4 only 
E) 1 and 4 
A) 1 only 
B) 2 only 
C) 3 only 
D) 4 only 
E) 1 and 4 E

Question 4

A chemical compound that helps control the pH of a solution by adding or removing hydrogen ions is a(n)

Accepted Answer

A) electrolyte. 
B) salt. 
C) cation. 
D) colloid. 
E) buffer. 
A) electrolyte. 
B) salt. 
C) cation. 
D) colloid. 
E) buffer.

Question 5

This type of lipid is used by the body for insulation.

Accepted Answer

A) phospholipids 
B) triglycerides 
C) bile salts 
D) sex hormones 
E) carotenes 
A) phospholipids 
B) triglycerides 
C) bile salts 
D) sex hormones 
E) carotenes

Question 6

AB + CD → AD + BC is a general example of a(n)_____ reaction.

Accepted Answer

A) decomposition 
B) synthesis 
C) exchange 
D) reversible 
E) catalyzed 
A) decomposition 
B) synthesis 
C) exchange 
D) reversible 
E) catalyzed

Question 7

A solution with a pH value less than 7 is

Accepted Answer

A) basic. 
B) neutral. 
C) acidic. 
D) alkaline. 
E) concentrated. 
A) basic. 
B) neutral. 
C) acidic. 
D) alkaline. 
E) concentrated.

Question 8

Which of the following is a common function of RNA?

Accepted Answer

A) produces electrical impulses 
B) storage of energy transfers energy for cellular metabolism 
C) transfer information carries genetic code needed for protein synthesis 
D) long-term storage of information for carries inherited genetic code that controls protein synthesis 
E) transports of fluids 
A) produces electrical impulses 
B) storage of energy transfers energy for cellular metabolism 
C) transfer information carries genetic code needed for protein synthesis 
D) long-term storage of information for carries inherited genetic code that controls protein synthesis 
E) transports of fluids

Question 9

Describe what happens to a protein's structure and function when it is denatured.

Accepted Answer

During denaturation,the folded

Question 10

This type of lipid is the body's primary long-term energy storage molecule.

Accepted Answer

A) steroid 
B) phospholipid 
C) cholesterol 
D) triglyceride 
E) lipoprotein 
A) steroid 
B) phospholipid 
C) cholesterol 
D) triglyceride 
E) lipoprotein

Question 11

The chemical bonds formed between the oxygen and hydrogen atoms making up a water molecule are called

Accepted Answer

A) nonpolar covalent bonds. 
B) polar covalent bonds. 
C) hydrogen bonds. 
D) ionic bonds. 
E) atomic bonds. 
A) nonpolar covalent bonds. 
B) polar covalent bonds. 
C) hydrogen bonds. 
D) ionic bonds. 
E) atomic bonds.

Question 12

Which of the following is NOT true about phospholipids?

Accepted Answer

A) They contain a glycerol backbone. 
B) The head group is polar. 
C) The molecule is an important part of cell membranes. 
D) The tail groups are nonpolar. 
E) They are a major form of energy storage. 
A) They contain a glycerol backbone. 
B) The head group is polar. 
C) The molecule is an important part of cell membranes. 
D) The tail groups are nonpolar. 
E) They are a major form of energy storage.

Question 13

In the diagram,what pH value represents an acidic Solution?

Accepted Answer

A) 12 
B) 10 
C) 8 
D) 6 
E) None of these choices. 
A) 12 
B) 10 
C) 8 
D) 6 
E) None of these choices.

Question 14

Which of the following is a proton donor?

Accepted Answer

A) acid 
B) base 
C) salt 
D) organic compound 
E) colloid 
A) acid 
B) base 
C) salt 
D) organic compound 
E) colloid

Question 15

Choose the appropriate atomic number associated with the element.
Carbon's atomic mass (P = 6,N = 6)is [dropdown 1a].Carbon has [dropdown 2b] valence electrons.Carbon can form up to [dropdown 3c] covalent bonds.Carbon 14 is a radioactive isotope and contains [dropdown 4d] neutrons.
Dropdown choices
2
4
6
7
8
12
14

Accepted Answer

The answer of Choose the appropriate atomic number associated with...

Question 16

The energy stored in the bonds of the molecules in the foods that humans eat is
1)a form of kinetic energy.
2)a form of potential energy.
3)referred to as chemical energy.

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 2 and 3 
E) All of these choices 
A) 1 only 
B) 2 only 
C) 3 only 
D) 2 and 3 
E) All of these choices

Question 17

What are the four major elements found in the chemicals that comprise the human body?

Accepted Answer

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

Question 18

This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element.

Accepted Answer

A) mass number 
B) atomic number 
C) atomic mass 
D) ionic mass 
E) covalent mass 
A) mass number 
B) atomic number 
C) atomic mass 
D) ionic mass 
E) covalent mass

Question 19

A triple covalent bond is formed between atoms sharing _____ valence electrons.

Accepted Answer

A) one 
B) two 
C) three 
D) six 
E) eight 
A) one 
B) two 
C) three 
D) six 
E) eight

Question 20

In the body fluid compartments found in of the human body,the solvent is

Accepted Answer

A) glucose. 
B) lipids. 
C) carbon dioxide. 
D) water. 
E) electrolyte. 
A) glucose. 
B) lipids. 
C) carbon dioxide. 
D) water. 
E) electrolyte.

Exam 2: The Chemical Level of Organization

The nucleus of unstable _____ of an element will decay leading to emission of radiation.

Describe the functions of water in the body.

Which of the labeled structures are found in DNA but not RNA? 1 A 2 B 3 C 4 E

A chemical compound that helps control the pH of a solution by adding or removing hydrogen ions is a(n)

This type of lipid is used by the body for insulation.

AB + CD → AD + BC is a general example of a(n)_____ reaction.

A solution with a pH value less than 7 is

Which of the following is a common function of RNA?

Describe what happens to a protein's structure and function when it is denatured.

This type of lipid is the body's primary long-term energy storage molecule.

The chemical bonds formed between the oxygen and hydrogen atoms making up a water molecule are called

Which of the following is NOT true about phospholipids?

In the diagram,what pH value represents an acidic Solution?

Which of the following is a proton donor?

The energy stored in the bonds of the molecules in the foods that humans eat is 1)a form of kinetic energy. 2)a form of potential energy. 3)referred to as chemical energy.

What are the four major elements found in the chemicals that comprise the human body?

This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element.

A triple covalent bond is formed between atoms sharing _____ valence electrons.

In the body fluid compartments found in of the human body,the solvent is

An Introduction to the Human Body

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

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