Question 1

Phospholipids have a hydrophilic end which is

Accepted Answer

A) polar and water-soluble. 
B) nonpolar and water-soluble. 
C) polar and water-insoluble. 
D) nonpolar and water -insoluble. 
A) polar and water-soluble. 
B) nonpolar and water-soluble. 
C) polar and water-insoluble. 
D) nonpolar and water -insoluble.

Question 2

Which of the following is the correct complementary strand to CATGTC?

Accepted Answer

A) GUACAG 
B) TCGTAT 
C) CATGTC 
D) GTACAG 
E) AGCACA 
A) GUACAG 
B) TCGTAT 
C) CATGTC 
D) GTACAG 
E) AGCACA

Question 3

Covalent bonds form when

Accepted Answer

A) atomic nuclei fuse. 
B) electrons are shared between two atoms. 
C) neutrons are transferred from one atom to another. 
D) molecules become ionized. 
E) protons are lost from atoms. 
A) atomic nuclei fuse. 
B) electrons are shared between two atoms. 
C) neutrons are transferred from one atom to another. 
D) molecules become ionized. 
E) protons are lost from atoms.

Question 4

A buffer will

Accepted Answer

A) enhance changes in the pH of the solutions. 
B) make a solution more acidic. 
C) make a solution more basic. 
D) have no effect on the pH of the solutions. 
E) resist drastic changes in the pH of the solutions. 
A) enhance changes in the pH of the solutions. 
B) make a solution more acidic. 
C) make a solution more basic. 
D) have no effect on the pH of the solutions. 
E) resist drastic changes in the pH of the solutions.

Question 5

-Phospholipids are important components of the plasma membrane.What does "B" 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 6

Solution A increases its acidity.This means that the

Accepted Answer

A) pH of the solution has increased. 
B) number of hydrogen ions has increased. 
C) solution is closer to neutrality. 
D) solution will now accept more protons. 
E) number of hydrogen ions has decreased. 
A) pH of the solution has increased. 
B) number of hydrogen ions has increased. 
C) solution is closer to neutrality. 
D) solution will now accept more protons. 
E) number of hydrogen ions has decreased.

Question 7

Normal blood pH is maintained within a range of

Accepted Answer

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

Question 8

What type of covalent bond is formed between amino acid molecules during protein synthesis?

Accepted Answer

A) electrovalent bond 
B) amino bond 
C) peptide bond 
D) hydrogen bond 
E) primary bond 
A) electrovalent bond 
B) amino bond 
C) peptide bond 
D) hydrogen bond 
E) primary bond

Question 9

-Phospholipids are important components of the plasma membrane.What does "D" 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 10

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male.What kind of atom is found at "D"?

Accepted Answer

A) oxygen atom 
B) water molecule 
C) polar covalent bond 
D) hydrogen atom 
E) hydrogen bond 
A) oxygen atom 
B) water molecule 
C) polar covalent bond 
D) hydrogen atom 
E) hydrogen bond

Question 11

Which of the following is the correct sequence from smallest to largest?

Accepted Answer

A) amino acid,cell,protein,atom 
B) protein,cell,amino acid,atom 
C) amino acid,atom,cell,protein 
D) atom,amino acid,protein,cell 
E) cell,protein,amino acid,atom 
A) amino acid,cell,protein,atom 
B) protein,cell,amino acid,atom 
C) amino acid,atom,cell,protein 
D) atom,amino acid,protein,cell 
E) cell,protein,amino acid,atom

Question 12

Identify the material that would NOT be considered an important inorganic substances in our bodies.

Accepted Answer

A)  carbon 
B)  iron 
C)  calcium 
D)  oxygen 
A)  carbon 
B)  iron 
C)  calcium 
D)  oxygen

Question 13

All of the following terms relate to lipids.Which does not belong with the other four?

Accepted Answer

A) steroid 
B) cholesterol 
C) estrogen 
D) bile salts 
E) triglyceride 
A) steroid 
B) cholesterol 
C) estrogen 
D) bile salts 
E) triglyceride

Question 14

Which of the following pairs is mismatched?

Accepted Answer

A) hydrolysis - water is used in decomposition reaction 
B) synthesis reaction - two reactants combine to form a larger product 
C) decomposition reaction - large reactant broken into smaller products 
D) dehydration reaction - water is a product of the reaction 
E) oxidation - gain of electrons 
A) hydrolysis - water is used in decomposition reaction 
B) synthesis reaction - two reactants combine to form a larger product 
C) decomposition reaction - large reactant broken into smaller products 
D) dehydration reaction - water is a product of the reaction 
E) oxidation - gain of electrons

Question 15

All of the synthesis reactions in the body are called

Accepted Answer

A) oxidation-reduction. 
B) hydrolysis. 
C) dissociation. 
D) anabolism. 
E) catabolism. 
A) oxidation-reduction. 
B) hydrolysis. 
C) dissociation. 
D) anabolism. 
E) catabolism.

Question 16

Which of the following is an organic compound?

Accepted Answer

A) hydrochloric acid (HCl) 
B) salt (NaCl) 
C) sucrose (C12H22O11) 
D) water (H2O) 
E) None of these choices are correct. 
A) hydrochloric acid (HCl) 
B) salt (NaCl) 
C) sucrose (C12H22O11) 
D) water (H2O) 
E) None of these choices are correct.

Question 17

Proteins

Accepted Answer

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

Question 18

Which of the following factors will influence the rate of chemical reactions?

Accepted Answer

A) temperature 
B) concentration of reactants 
C) presence of catalysts 
D) presence of enzymes 
E) All of these factors will influence the rate of chemical reactions. 
A) temperature 
B) concentration of reactants 
C) presence of catalysts 
D) presence of enzymes 
E) All of these factors will influence the rate of chemical reactions.

Question 19

Which of the following is a component of a nucleotide?

Accepted Answer

A) adenine--a nitrogen base 
B) calcium ions 
C) cholesterol--a steroid 
D) ATP 
E) glucose--a monosaccharide 
A) adenine--a nitrogen base 
B) calcium ions 
C) cholesterol--a steroid 
D) ATP 
E) glucose--a monosaccharide

Question 20

Potential energy stored in bonds of molecules is _____ energy.

Accepted Answer

A)  mechanical 
B)  thermal 
C)  chemical 
D)  molecular 
E)  None of the above 
A)  mechanical 
B)  thermal 
C)  chemical 
D)  molecular 
E)  None of the above

Exam 2: The Chemical Basis of Life

Phospholipids have a hydrophilic end which is

Which of the following is the correct complementary strand to CATGTC?

Covalent bonds form when

A buffer will

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

Solution A increases its acidity.This means that the

Normal blood pH is maintained within a range of

What type of covalent bond is formed between amino acid molecules during protein synthesis?

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

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male.What kind of atom is found at "D"?

Which of the following is the correct sequence from smallest to largest?

Identify the material that would NOT be considered an important inorganic substances in our bodies.

All of the following terms relate to lipids.Which does not belong with the other four?

Which of the following pairs is mismatched?

All of the synthesis reactions in the body are called

Which of the following is an organic compound?

Proteins

Which of the following factors will influence the rate of chemical reactions?

Which of the following is a component of a nucleotide?

Potential energy stored in bonds of molecules is _____ energy.

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,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

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