Question 1

A solution that has equal numbers of hydrogen and hydroxyl ions is:

Accepted Answer

A) neutral 
B) a base 
C) an acid 
D) none of these 
A) neutral 
B) a base 
C) an acid 
D) none of these

Question 2

A protein that speeds up a reaction yet remains unchanged is called a(n) ____________________.

Accepted Answer

The answer of A protein that speeds up a reaction...

Question 3

A blood pH of 7.36 is:

Accepted Answer

A) slightly alkaline and in the normal range 
B) slightly acidic and in the normal range 
C) slightly alkaline and too high for the normal range 
D) slightly acidic and too low for the normal range 
A) slightly alkaline and in the normal range 
B) slightly acidic and in the normal range 
C) slightly alkaline and too high for the normal range 
D) slightly acidic and too low for the normal range

Question 4

Which of the following statements are true of pH and solutions? (Read carefully and select all of the correct statements.)

Accepted Answer

A) A solution with a pH of 7 is considered neutral. 
B) Only a pH of 8 or higher is alkaline. 
C) The entire pH scale ranges from 1 to 15. 
D) As the number of H+ ions in a solution increases, so does the pH value. 
E) A solution with 100 OH- ions and 200 H+ ions is an acidic solution.
F)The average pH of the blood is the same as the pH of pure water.
G)The pH of the blood is important for the chemical reactions that take place in the blood.
H)A body fluid such as gastric juice has the same pH range as blood because both are extracellular fluids. 
A) A solution with a pH of 7 is considered neutral. 
B) Only a pH of 8 or higher is alkaline. 
C) The entire pH scale ranges from 1 to 15. 
D) As the number of H+ ions in a solution increases, so does the pH value. 
E) A solution with 100 OH- ions and 200 H+ ions is an acidic solution.
F)The average pH of the blood is the same as the pH of pure water.
G)The pH of the blood is important for the chemical reactions that take place in the blood.
H)A body fluid such as gastric juice has the same pH range as blood because both are extracellular fluids.

Question 5

The monosaccharides that are part of DNA and RNA are the ____________________.

Accepted Answer

The answer of The monosaccharides that are part of DNA...

Question 6

Which of the following statements are true of covalent, hydrogen, or disulfide bonds? (Read carefully and select all of the correct statements.)

Accepted Answer

A) Covalent bonds are formed when atoms share electrons. 
B) Organic molecules such as glucose are held together by covalent bonds. 
C) The element carbon only rarely forms covalent bonds. 
D) Hydrogen bonds help maintain the three-dimensional shape of proteins. 
E) Disulfide bonds help maintain the three-dimensional shape of carbohydrates.
F)Covalent bonds are relatively strong, except in water, where they weaken and tend to break. 
A) Covalent bonds are formed when atoms share electrons. 
B) Organic molecules such as glucose are held together by covalent bonds. 
C) The element carbon only rarely forms covalent bonds. 
D) Hydrogen bonds help maintain the three-dimensional shape of proteins. 
E) Disulfide bonds help maintain the three-dimensional shape of carbohydrates.
F)Covalent bonds are relatively strong, except in water, where they weaken and tend to break.

Question 7

Large molecules of glycogen are made of the smaller subunits called:

Accepted Answer

A) glucose 
B) fatty acids and glycerol 
C) amino acids 
D) nucleotides 
A) glucose 
B) fatty acids and glycerol 
C) amino acids 
D) nucleotides

Question 8

Which statement is NOT true of ionic bonds?

Accepted Answer

A) They form salts. 
B) In the solid state, they are very strong. 
C) In water, many ionic bonds weaken. 
D) They involve the sharing of electrons. 
A) They form salts. 
B) In the solid state, they are very strong. 
C) In water, many ionic bonds weaken. 
D) They involve the sharing of electrons.

Question 9

Large changes in the pH of blood are prevented by chemicals called ____________________.

Accepted Answer

The answer of Large changes in the pH of blood...

Question 10

A reaction that involves the formation of bonds is a ____________________ reaction.

Accepted Answer

The answer of A reaction that involves the formation of...

Question 11

A solution that has more hydrogen ions than hydroxyl ions is:

Accepted Answer

A) a base 
B) an acid 
C) neutral 
D) none of these 
A) a base 
B) an acid 
C) neutral 
D) none of these

Question 12

The function of DNA is to:

Accepted Answer

A) be the genetic code within cells 
B) serve as the site of protein synthesis 
C) both A and B 
D) both A and B and form chromosomes 
A) be the genetic code within cells 
B) serve as the site of protein synthesis 
C) both A and B 
D) both A and B and form chromosomes

Question 13

Which of these is NOT a product of cell respiration?

Accepted Answer

A) water 
B) carbon dioxide 
C) ATP 
D) oxygen 
A) water 
B) carbon dioxide 
C) ATP 
D) oxygen

Question 14

Which statement is NOT true of cell respiration?

Accepted Answer

A) It is the link between eating and breathing. 
B) The water produced must be excreted or the cell will burst. 
C) One of the energy products is heat. 
D) ATP is biologically useful energy. 
A) It is the link between eating and breathing. 
B) The water produced must be excreted or the cell will burst. 
C) One of the energy products is heat. 
D) ATP is biologically useful energy.

Question 15

Which of the following statements are true of ions and ionic bonds? (Read carefully and select all of the correct statements.)

Accepted Answer

A) When an atom loses one electron, it then has a charge of negative 1. 
B) A positive ion may be called a cation. 
C) A sodium ion will bond with two chloride ions to form a molecule of sodium chloride. 
D) A chloride ion is a cation. 
E) Ionic bonds may break in an aqueous solution.
F)The ionic bonds of a salt are weak in the solid state. 
A) When an atom loses one electron, it then has a charge of negative 1. 
B) A positive ion may be called a cation. 
C) A sodium ion will bond with two chloride ions to form a molecule of sodium chloride. 
D) A chloride ion is a cation. 
E) Ionic bonds may break in an aqueous solution.
F)The ionic bonds of a salt are weak in the solid state.

Question 16

The trace element ____________________ is part of vitamin B12.

Accepted Answer

Question 17

The process of sweating depends upon water as a:

Accepted Answer

A) solvent 
B) lubricant 
C) transporter 
D) heat absorber 
A) solvent 
B) lubricant 
C) transporter 
D) heat absorber

Question 18

If too much carbon dioxide accumulates in cells and tissues:

Accepted Answer

A) the pH will decrease 
B) cell membranes will rupture 
C) the pH will increase 
D) cell membranes will shrivel 
A) the pH will decrease 
B) cell membranes will rupture 
C) the pH will increase 
D) cell membranes will shrivel

Question 19

The lipids that form the largest part of cell membranes are the ____________________.

Accepted Answer

The answer of The lipids that form the largest part...

Question 20

Which of these is NOT a disaccharide?

Accepted Answer

A) sucrose 
B) galactose 
C) maltose 
D) lactose 
A) sucrose 
B) galactose 
C) maltose 
D) lactose

Exam 2: Some Basic Chemistry

A solution that has equal numbers of hydrogen and hydroxyl ions is:

A protein that speeds up a reaction yet remains unchanged is called a(n) ____________________.

A blood pH of 7.36 is:

Which of the following statements are true of pH and solutions? (Read carefully and select all of the correct statements.)

The monosaccharides that are part of DNA and RNA are the ____________________.

Which of the following statements are true of covalent, hydrogen, or disulfide bonds? (Read carefully and select all of the correct statements.)

Large molecules of glycogen are made of the smaller subunits called:

Which statement is NOT true of ionic bonds?

Large changes in the pH of blood are prevented by chemicals called ____________________.

A reaction that involves the formation of bonds is a ____________________ reaction.

A solution that has more hydrogen ions than hydroxyl ions is:

The function of DNA is to:

Which of these is NOT a product of cell respiration?

Which statement is NOT true of cell respiration?

Which of the following statements are true of ions and ionic bonds? (Read carefully and select all of the correct statements.)

The trace element ____________________ is part of vitamin B12.

The process of sweating depends upon water as a:

If too much carbon dioxide accumulates in cells and tissues:

The lipids that form the largest part of cell membranes are the ____________________.

Which of these is NOT a disaccharide?

Organization and General Plan of the Body

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Vascular System

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

Human Development and Genetics

An Introduction to Microbiology and Human Disease

Filters

The trace element ____________________ is part of vitamin B₁₂.