Question 1

Which of the following statements about hydrogen bonds is false?

Accepted Answer

A) Hydrogen bonds are strong attractive forces between hydrogen atoms and negatively charged atoms. 
B) Hydrogen bonds can occur within a single molecule. 
C) Hydrogen bonds can form between neighboring molecules. 
D) Hydrogen bonds are important for holding large molecules together. 
E) Hydrogen bonds are responsible for many of the properties of water. 
A) Hydrogen bonds are strong attractive forces between hydrogen atoms and negatively charged atoms. 
B) Hydrogen bonds can occur within a single molecule. 
C) Hydrogen bonds can form between neighboring molecules. 
D) Hydrogen bonds are important for holding large molecules together. 
E) Hydrogen bonds are responsible for many of the properties of water.

Question 2

Molecules that have the same molecular formula but different structural formulas are called

Accepted Answer

A) isotopes. 
B) isomers. 
C) isozymes. 
D) isotypes. 
E) isomoles. 
A) isotopes. 
B) isomers. 
C) isozymes. 
D) isotypes. 
E) isomoles.

Question 3

Oxygen (atomic number 8)requires how many additional electrons to fill its outer electron shell?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 6 
E) 8 
A) 1 
B) 2 
C) 4 
D) 6 
E) 8

Question 4

Electrons whirl around the center of the atom at high speed,forming a(n)________.

Accepted Answer

The answer of Electrons whirl around the center of the...

Question 5

Lipids are composed of fatty acids and

Accepted Answer

A) glycerol. 
B) amino acids. 
C) sugars. 
D) monosaccharides. 
E) polypeptides. 
A) glycerol. 
B) amino acids. 
C) sugars. 
D) monosaccharides. 
E) polypeptides.

Question 6

Muscle proteins are destroyed after 17 days and then replaced.This is an example of

Accepted Answer

A) metabolic turnover. 
B) surveillance. 
C) surface tension. 
D) disease. 
E) specificity. 
A) metabolic turnover. 
B) surveillance. 
C) surface tension. 
D) disease. 
E) specificity.

Question 7

The element sulfur has an atomic number of 16 and mass number of 32.How many neutrons are in the nucleus of a sulfur atom? If sulfur forms covalent bonds with hydrogen,how many hydrogen atoms can bond to one sulfur atom?

Accepted Answer

The number of neutrons in an atom is equ

Question 8

A shortage of steroids in the body would result in a shortage of

Accepted Answer

A) sex hormones. 
B) proteins. 
C) plasma membranes. 
D) glycogen. 
E) sex hormones and plasma membranes. 
A) sex hormones. 
B) proteins. 
C) plasma membranes. 
D) glycogen. 
E) sex hormones and plasma membranes.

Question 9

Blood has a very narrow normal pH range but urine has a very broad normal pH range.What does that indicate about the physiology of pH?

Accepted Answer

Homeostasis requires that the pH of body

Question 10

Substrate molecules bind to enzymes at the ________ sites.

Accepted Answer

A) amino 
B) active 
C) carboxyl 
D) reactant 
E) neutral 
A) amino 
B) active 
C) carboxyl 
D) reactant 
E) neutral

Question 11

Which element commonly has only a proton as its nucleus?

Accepted Answer

A) helium 
B) neon 
C) argon 
D) hydrogen 
E) carbon 
A) helium 
B) neon 
C) argon 
D) hydrogen 
E) carbon

Question 12

The three structural components of a nucleotide are a pentose,a phosphate group,and a _______ base.

Accepted Answer

The answer of The three structural components of a nucleotide...

Question 13

The group of organic compounds containing carbon,hydrogen,and oxygen in a near 1:2:1 ratio is defined as a

Accepted Answer

A) carbohydrate. 
B) lipid. 
C) protein. 
D) nucleic acid. 
E) saturated fat. 
A) carbohydrate. 
B) lipid. 
C) protein. 
D) nucleic acid. 
E) saturated fat.

Question 14

A polysaccharide that is formed in liver and muscle cells to store glucose is

Accepted Answer

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

Question 15

A(n)________ is a homogeneous mixture containing a solvent and a solute.

Accepted Answer

The answer of A(n)________ is a homogeneous mixture containing a...

Question 16

Ions with a + charge are called

Accepted Answer

A) cations. 
B) anions. 
C) radicals. 
D) positrons. 
E) isotopes. 
A) cations. 
B) anions. 
C) radicals. 
D) positrons. 
E) isotopes.

Question 17

Which of the following is the symbol for an amino group?

Accepted Answer

A) -COOH 
B) -PO₃ 
C) -NH₂ 
D) -AMO 
E) -OH 
A) -COOH 
B) -PO₃ 
C) -NH₂ 
D) -AMO 
E) -OH

Question 18

AB → A + B is to decomposition as A + B → AB is to

Accepted Answer

A) exchange. 
B) synthesis. 
C) combustion. 
D) replacement. 
E) metabolism. 
A) exchange. 
B) synthesis. 
C) combustion. 
D) replacement. 
E) metabolism.

Question 19

The formula for methane gas is CH₄. What does the formula 4CH₄ represent?

Accepted Answer

A) a molecule with 4 carbon atoms 
B) a molecule with 4 carbon atoms and 16 hydrogen atoms 
C) 4 molecules,each containing a carbon and a hydrogen atom 
D) 4 molecules,each containing a carbon atom and 4 hydrogen atoms 
E) an inorganic compound with ionic bonds 
A) a molecule with 4 carbon atoms 
B) a molecule with 4 carbon atoms and 16 hydrogen atoms 
C) 4 molecules,each containing a carbon and a hydrogen atom 
D) 4 molecules,each containing a carbon atom and 4 hydrogen atoms 
E) an inorganic compound with ionic bonds

Question 20

Identify the product formed from the phosphorylation of ADP.

Accepted Answer

A) adenosine diphosphate 
B) adenine 
C) adenosine triphosphate 
D) deoxyribonucleic acid 
E) ribose 
A) adenosine diphosphate 
B) adenine 
C) adenosine triphosphate 
D) deoxyribonucleic acid 
E) ribose

Exam 2: The Chemical Level of Organization

Which of the following statements about hydrogen bonds is false?

Molecules that have the same molecular formula but different structural formulas are called

Oxygen (atomic number 8)requires how many additional electrons to fill its outer electron shell?

Electrons whirl around the center of the atom at high speed,forming a(n)________.

Lipids are composed of fatty acids and

Muscle proteins are destroyed after 17 days and then replaced.This is an example of

The element sulfur has an atomic number of 16 and mass number of 32.How many neutrons are in the nucleus of a sulfur atom? If sulfur forms covalent bonds with hydrogen,how many hydrogen atoms can bond to one sulfur atom?

A shortage of steroids in the body would result in a shortage of

Blood has a very narrow normal pH range but urine has a very broad normal pH range.What does that indicate about the physiology of pH?

Substrate molecules bind to enzymes at the ________ sites.

Which element commonly has only a proton as its nucleus?

The three structural components of a nucleotide are a pentose,a phosphate group,and a _______ base.

The group of organic compounds containing carbon,hydrogen,and oxygen in a near 1:2:1 ratio is defined as a

A polysaccharide that is formed in liver and muscle cells to store glucose is

A(n)________ is a homogeneous mixture containing a solvent and a solute.

Ions with a + charge are called

Which of the following is the symbol for an amino group?

AB → A + B is to decomposition as A + B → AB is to

The formula for methane gas is CH₄. What does the formula 4CH₄ represent?

Identify the product formed from the phosphorylation of ADP.

An Introduction to Anatomy and Physiology

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration I: Sensory Pathways and the Somatic Nervous System

Neural Integration Ii: the Autonomic Nervous System and

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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