Question 1

When an atom gains one or more electrons,it

Accepted Answer

A) becomes positively charged. 
B) has no change in its charge. 
C) is called an anion. 
D) is called a cation. 
A) becomes positively charged. 
B) has no change in its charge. 
C) is called an anion. 
D) is called a cation. C

Question 2

Steroids are derived from cholesterol.

Accepted Answer

A) True 
 B)False  True

Question 3

The term "chemical element" refers to the most common isotope of that element.

Accepted Answer

A) True 
 B)False  False

Question 4

Molecules that are mirror images of each other are

Accepted Answer

A) enantiomers. 
B) geometric isomers. 
C) cis/trans isomers. 
D) structural isomers. 
A) enantiomers. 
B) geometric isomers. 
C) cis/trans isomers. 
D) structural isomers.

Question 5

The specific sequence of amino acids in a polypeptide is known as the primary protein structure.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is NOT true of steroids?

Accepted Answer

A) They have three 6-carbon rings joined to one 5-carbon ring. 
B) They contain a variety of functional groups. 
C) They are derived from palmitate. 
D) They differ in the position of the double covalent bonds between the carbon atoms in the rings. 
A) They have three 6-carbon rings joined to one 5-carbon ring. 
B) They contain a variety of functional groups. 
C) They are derived from palmitate. 
D) They differ in the position of the double covalent bonds between the carbon atoms in the rings.

Question 7

Corticosteroids are a type of lipid commonly found in cell membranes.

Accepted Answer

A) True 
 B)False

Question 8

The addition of water with the proper enzymes to a molecule is called

Accepted Answer

A) dehydration synthesis. 
B) condensation. 
C) hydrolysis. 
D) combustion. 
A) dehydration synthesis. 
B) condensation. 
C) hydrolysis. 
D) combustion.

Question 9

An example of an aromatic substance is

Accepted Answer

A) hexane. 
B) cyclohexane. 
C) fructose. 
D) benzene. 
A) hexane. 
B) cyclohexane. 
C) fructose. 
D) benzene.

Question 10

The primary structure of proteins is/are

Accepted Answer

A) the linear arrangement of amino acids in the molecule. 
B) alpha helix coils and beta-pleated sheet folds of a protein strand. 
C) due to the interaction between protein subunits. 
D) stabilized when a protein is denatureD. 
A) the linear arrangement of amino acids in the molecule. 
B) alpha helix coils and beta-pleated sheet folds of a protein strand. 
C) due to the interaction between protein subunits. 
D) stabilized when a protein is denatureD.

Question 11

As the pH of the blood decreases,the amount of hydrogen ions in the blood would decrease.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following describes a trans-fat?

Accepted Answer

A) Has carbon-carbon single bonds. 
B) Has carbon-carbon double bonds with hydrogens on opposite sides of the bonds. 
C) Has carbon-carbon double bonds with hydrogens on the same side of the bonds. 
D) The fatty acids form a bent chain. 
A) Has carbon-carbon single bonds. 
B) Has carbon-carbon double bonds with hydrogens on opposite sides of the bonds. 
C) Has carbon-carbon double bonds with hydrogens on the same side of the bonds. 
D) The fatty acids form a bent chain.

Question 13

Which of the following is NOT true of phospholipids?

Accepted Answer

A) They are glycolipids originally isolated from the prostate gland. 
B) They are major components of the cell membrane. 
C) They have a polar head and a nonpolar tail. 
D) They are amphipathic molecules. 
A) They are glycolipids originally isolated from the prostate gland. 
B) They are major components of the cell membrane. 
C) They have a polar head and a nonpolar tail. 
D) They are amphipathic molecules.

Question 14

Phospholipid molecules will form aggregates called ______ when placed in water.

Accepted Answer

A) surfactants 
B) ketone bodies 
C) prostaglandins 
D) micelles 
A) surfactants 
B) ketone bodies 
C) prostaglandins 
D) micelles

Question 15

What holds a protein in its tertiary structure?

Accepted Answer

A) hydrogen bonds between nearby amino acids 
B) weak chemical bonds between widely spaced amino acids 
C) disulfide bonds between sulfur groups on cysteines 
D) Both weak chemical bonds between widely spaced amino acids and disulfide bonds between sulfur groups on cysteines are correct. 
A) hydrogen bonds between nearby amino acids 
B) weak chemical bonds between widely spaced amino acids 
C) disulfide bonds between sulfur groups on cysteines 
D) Both weak chemical bonds between widely spaced amino acids and disulfide bonds between sulfur groups on cysteines are correct.

Question 16

Sucrose is a disaccharide that is composed of _______________ and ____________.

Accepted Answer

A) glucose,glucose 
B) glucose,galactose 
C) glucose,fructose 
D) fructose,galactose 
A) glucose,glucose 
B) glucose,galactose 
C) glucose,fructose 
D) fructose,galactose

Question 17

Ketones contain a(n)_______________ group within the carbon chain.

Accepted Answer

A) hydroxyl 
B) carbonyl 
C) carboxyl 
D) aromatic 
A) hydroxyl 
B) carbonyl 
C) carboxyl 
D) aromatic

Question 18

The primary buffer in the blood is the _______________ buffer.

Accepted Answer

A) hydronium 
B) ammonia 
C) phosphate 
D) bicarbonate 
A) hydronium 
B) ammonia 
C) phosphate 
D) bicarbonate

Question 19

Ketosis

Accepted Answer

A) occurs when stored fats are rapidly degraded by the body. 
B) stimulates an increased blood pH. 
C) may lead to alkalosis. 
D) occurs as the concentration of ketones in the urine decreases. 
A) occurs when stored fats are rapidly degraded by the body. 
B) stimulates an increased blood pH. 
C) may lead to alkalosis. 
D) occurs as the concentration of ketones in the urine decreases.

Question 20

How many different amino acids are known?

Accepted Answer

A) 10 
B) 25 
C) 30 
D) 20 
A) 10 
B) 25 
C) 30 
D) 20

When an atom gains one or more electrons,it

Steroids are derived from cholesterol.

The term "chemical element" refers to the most common isotope of that element.

Molecules that are mirror images of each other are

The specific sequence of amino acids in a polypeptide is known as the primary protein structure.

Which of the following is NOT true of steroids?

Corticosteroids are a type of lipid commonly found in cell membranes.

The addition of water with the proper enzymes to a molecule is called

An example of an aromatic substance is

The primary structure of proteins is/are

As the pH of the blood decreases,the amount of hydrogen ions in the blood would decrease.

Which of the following describes a trans-fat?

Which of the following is NOT true of phospholipids?

Phospholipid molecules will form aggregates called ______ when placed in water.

What holds a protein in its tertiary structure?

Sucrose is a disaccharide that is composed of ___ and .

Ketones contain a(n)_______________ group within the carbon chain.

The primary buffer in the blood is the _______________ buffer.

Ketosis

How many different amino acids are known?

The Study of Body Function

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

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Exam 2: Chemical Composition of the Body

When an atom gains one or more electrons,it

Steroids are derived from cholesterol.

The term "chemical element" refers to the most common isotope of that element.

Molecules that are mirror images of each other are

The specific sequence of amino acids in a polypeptide is known as the primary protein structure.

Which of the following is NOT true of steroids?

Corticosteroids are a type of lipid commonly found in cell membranes.

The addition of water with the proper enzymes to a molecule is called

An example of an aromatic substance is

The primary structure of proteins is/are

As the pH of the blood decreases,the amount of hydrogen ions in the blood would decrease.

Which of the following describes a trans-fat?

Which of the following is NOT true of phospholipids?

Phospholipid molecules will form aggregates called ______ when placed in water.

What holds a protein in its tertiary structure?

Sucrose is a disaccharide that is composed of _______________ and ____________.

Ketones contain a(n)_______________ group within the carbon chain.

The primary buffer in the blood is the _______________ buffer.

Ketosis

How many different amino acids are known?

The Study of Body Function

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

Filters

Sucrose is a disaccharide that is composed of ___ and .