Question 1

Which of the following statements about water is false?

Accepted Answer

A) It is composed of polar molecules. 
B) It is responsible for much of the mass of the human body. 
C) It has a relatively low heat capacity. 
D) It can dissolve many substances. 
E) It contains hydrogen bonds. 
A) It is composed of polar molecules. 
B) It is responsible for much of the mass of the human body. 
C) It has a relatively low heat capacity. 
D) It can dissolve many substances. 
E) It contains hydrogen bonds. C

Question 2

Hydrophilic molecules readily associate with

Accepted Answer

A) lipid molecules. 
B) hydrophobic molecules. 
C) water molecules. 
D) acids. 
E) salts. 
A) lipid molecules. 
B) hydrophobic molecules. 
C) water molecules. 
D) acids. 
E) salts. C

Question 3

All fatty acids contain a functional group at one end called the ________ acid group.

Accepted Answer

A) linoleic 
B) ribonucleic 
C) hydroxyl 
D) glycosidic 
E) carboxylic 
A) linoleic 
B) ribonucleic 
C) hydroxyl 
D) glycosidic 
E) carboxylic E

Question 4

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 5

An important buffer in body fluids is

Accepted Answer

A) NaCl. 
B) NaOH. 
C) HCl. 
D) NaHCO₃. 
E) H₂O. 
A) NaCl. 
B) NaOH. 
C) HCl. 
D) NaHCO₃. 
E) H₂O.

Question 6

When two monosaccharides undergo a dehydration synthesis,

Accepted Answer

A) two new monosaccharides are formed. 
B) a disaccharide is formed. 
C) a polysaccharide is formed. 
D) a starch is formed. 
E) hydrolysis occurs. 
A) two new monosaccharides are formed. 
B) a disaccharide is formed. 
C) a polysaccharide is formed. 
D) a starch is formed. 
E) hydrolysis occurs.

Question 7

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 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

Radioisotopes have unstable

Accepted Answer

A) ions. 
B) nuclei. 
C) isotopes. 
D) electron clouds. 
E) protons. 
A) ions. 
B) nuclei. 
C) isotopes. 
D) electron clouds. 
E) protons.

Question 10

Which one of the following statements is false about the reaction H₂ + Cl₂ → 2 HCl?

Accepted Answer

A) H₂ and Cl₂ are the reactants. 
B) HCl is the product. 
C) One molecule of hydrogen contains two atoms. 
D) Two molecules of HCl are formed in the reaction. 
E) This reaction is easily reversible. 
A) H₂ and Cl₂ are the reactants. 
B) HCl is the product. 
C) One molecule of hydrogen contains two atoms. 
D) Two molecules of HCl are formed in the reaction. 
E) This reaction is easily reversible.

Question 11

Which of the following is not a cation?

Accepted Answer

A) Na⁺ 
B) Cl⁻ 
C) K⁺ 
D) Ca²⁺ 
E) Mg²⁺ 
A) Na⁺ 
B) Cl⁻ 
C) K⁺ 
D) Ca²⁺ 
E) Mg²⁺

Question 12

In the process of ________ a phosphate group is transferred to a molecule.

Accepted Answer

A) ionization 
B) buffering 
C) amination 
D) dissociation 
E) phosphorylation 
A) ionization 
B) buffering 
C) amination 
D) dissociation 
E) phosphorylation

Question 13

The most abundant high-energy compound in cells is

Accepted Answer

A) DNA. 
B) adenosine diphosphate. 
C) adenosine monophosphate. 
D) adenosine triphosphate. 
E) RNA. 
A) DNA. 
B) adenosine diphosphate. 
C) adenosine monophosphate. 
D) adenosine triphosphate. 
E) RNA.

Question 14

Adenine and guanine are

Accepted Answer

A) purines represented by T and C. 
B) pyrimidines represented by A and G. 
C) purines represented by A and G. 
D) pyrimidines represented by T and C. 
E) nucleotides represented by A and G. 
A) purines represented by T and C. 
B) pyrimidines represented by A and G. 
C) purines represented by A and G. 
D) pyrimidines represented by T and C. 
E) nucleotides represented by A and G.

Question 15

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

Accepted Answer

A) emulsion 
B) blend 
C) compound 
D) infusion 
E) solution 
A) emulsion 
B) blend 
C) compound 
D) infusion 
E) solution

Question 16

In the body,inorganic compounds

Accepted Answer

A) can serve as buffers. 
B) can make up proteins. 
C) are made from organic compounds. 
D) are structural components of cells. 
E) are metabolized for cellular energy. 
A) can serve as buffers. 
B) can make up proteins. 
C) are made from organic compounds. 
D) are structural components of cells. 
E) are metabolized for cellular energy.

Question 17

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 18

The mass number represents the number of

Accepted Answer

A) protons in an atom. 
B) electrons in an ion. 
C) neutrons in an atom. 
D) protons + neutrons. 
E) neutrons + electrons. 
A) protons in an atom. 
B) electrons in an ion. 
C) neutrons in an atom. 
D) protons + neutrons. 
E) neutrons + electrons.

Question 19

The mass of an atom is largely determined by the number of ________ it has.

Accepted Answer

A) electrons 
B) protons 
C) neutrons 
D) protons + neutrons 
E) protons + electrons 
A) electrons 
B) protons 
C) neutrons 
D) protons + neutrons 
E) protons + electrons

Question 20

Ions with a negative 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.

Exam 2: The Chemical Level of Organization

Which of the following statements about water is false?

Hydrophilic molecules readily associate with

All fatty acids contain a functional group at one end called the ________ acid group.

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?

An important buffer in body fluids is

When two monosaccharides undergo a dehydration synthesis,

Ions with a + charge are called

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

Radioisotopes have unstable

Which one of the following statements is false about the reaction H₂ + Cl₂ → 2 HCl?

Which of the following is not a cation?

In the process of ________ a phosphate group is transferred to a molecule.

The most abundant high-energy compound in cells is

Adenine and guanine are

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

In the body,inorganic compounds

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

The mass number represents the number of

The mass of an atom is largely determined by the number of ________ it has.

Ions with a negative charge are called

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

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

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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