Question 1

Name and describe the types of radiation discussed in the chapter.

Accepted Answer

In the chapter, we discussed three main

Question 2

When two molecules of glucose are joined,they form which disaccharide?

Accepted Answer

A)  Sucrose 
B)  Maltose 
C)  Lactose 
D)  Fructose 
A)  Sucrose 
B)  Maltose 
C)  Lactose 
D)  Fructose

Question 3

The simple sugars that are the building blocks for other carbohydrates are:

Accepted Answer

A)  disaccharides. 
B)  monosaccharides. 
C)  polysaccharides. 
D)  starches. 
A)  disaccharides. 
B)  monosaccharides. 
C)  polysaccharides. 
D)  starches.

Question 4

Humans can synthesize 13 of 21 basic amino acids; the remaining 8,which must be included in the diet,are called:

Accepted Answer

A)  enzymes. 
B)  essential amino acids. 
C)  structural proteins. 
D)  peptide bonds. 
A)  enzymes. 
B)  essential amino acids. 
C)  structural proteins. 
D)  peptide bonds.

Question 5

The approximate pH of gastric fluid is:

Accepted Answer

A)  10. 
B)  8. 
C)  4. 
D)  2. 
A)  10. 
B)  8. 
C)  4. 
D)  2.

Question 6

The most abundant and important compound(s)in the body is(are):

Accepted Answer

A)  air. 
B)  water. 
C)  proteins. 
D)  nucleic acids. 
A)  air. 
B)  water. 
C)  proteins. 
D)  nucleic acids.

Question 7

A weak acid:

Accepted Answer

A)  dissociates very little in solution. 
B)  dissociates almost completely in solution. 
C)  will cause the pH of the solution to rise above 7. 
D)  do both B and C. 
A)  dissociates very little in solution. 
B)  dissociates almost completely in solution. 
C)  will cause the pH of the solution to rise above 7. 
D)  do both B and C.

Question 8

A magnesium atom has an atomic number of 12,an atomic mass of 25,and a +2 charge.This atom would contain _____ protons,_____ neutrons,and _____ electrons.

Accepted Answer

A)  12; 25; 2 
B)  12; 13; 14 
C)  12; 13; 10 
D)  Not enough information is given to answer the question. 
A)  12; 25; 2 
B)  12; 13; 14 
C)  12; 13; 10 
D)  Not enough information is given to answer the question.

Question 9

The type of chemical reaction most likely to require energy is _____ reaction.

Accepted Answer

A)  synthesis 
B)  decomposition 
C)  exchange 
D)  All of the above reactions are equally likely to require energy. 
A)  synthesis 
B)  decomposition 
C)  exchange 
D)  All of the above reactions are equally likely to require energy.

Question 10

If one side of a DNA molecule was CTAGGCTG,the other side would be:

Accepted Answer

A)  CTAGGCTG. 
B)  GATCCGAC. 
C)  CUAGGCUG. 
D)  GAUCCGAC. 
A)  CTAGGCTG. 
B)  GATCCGAC. 
C)  CUAGGCUG. 
D)  GAUCCGAC.

Question 11

Which level of protein structure is one that contains several polypeptide chains?

Accepted Answer

A)  Primary 
B)  Secondary 
C)  Tertiary 
D)  Quaternary 
A)  Primary 
B)  Secondary 
C)  Tertiary 
D)  Quaternary

Question 12

A solution with a pH of 4 has_____ times more _____ ions than a solution with a pH of 6.

Accepted Answer

A)  10; H+ 
B)  10; OH- 
C)  100; H+ 
D)  100; OH- 
A)  10; H+ 
B)  10; OH- 
C)  100; H+ 
D)  100; OH-

Question 13

The term that is used to describe all of the chemical reactions that occur in body cells is:

Accepted Answer

A)  catabolism. 
B)  metabolism. 
C)  synthesis. 
D)  anabolism. 
A)  catabolism. 
B)  metabolism. 
C)  synthesis. 
D)  anabolism.

Question 14

Explain what is meant by anabolism and catabolism and name a process that is an example of each.

Accepted Answer

Anabolism and catabolism are two opposin

Question 15

Which of the following is not true of RNA?

Accepted Answer

A)  It contains ribose sugar. 
B)  It contains adenine. 
C)  It is composed of smaller molecules called nucleotides. 
D)  All of the above are true of RNA. 
A)  It contains ribose sugar. 
B)  It contains adenine. 
C)  It is composed of smaller molecules called nucleotides. 
D)  All of the above are true of RNA.

Question 16

The elements carbon,hydrogen,oxygen,and nitrogen make up which percentage of the human body?

Accepted Answer

A)  50% 
B)  69% 
C)  78% 
D)  96% 
A)  50% 
B)  69% 
C)  78% 
D)  96%

Question 17

Unsaturated fats:

Accepted Answer

A)  contain all the hydrogen atoms they can hold. 
B)  contain only single bonds between carbon atoms. 
C)  are usually solids at room temperature. 
D)  will kink or bend because of the double bonds between the carbon atoms. 
A)  contain all the hydrogen atoms they can hold. 
B)  contain only single bonds between carbon atoms. 
C)  are usually solids at room temperature. 
D)  will kink or bend because of the double bonds between the carbon atoms.

Question 18

When sodium (Na)gives up an electron to chlorine,the result is the formation of a sodium ion (Na⁺)with a positive charge.This happens because there is then one more _____ than _____.

Accepted Answer

A)  proton; electron 
B)  electron; proton 
C)  proton; neutron 
D)  electron; neutron 
A)  proton; electron 
B)  electron; proton 
C)  proton; neutron 
D)  electron; neutron

Question 19

The formation of sucrose involves the removal of a molecule of water.This is called:

Accepted Answer

A)  hydrolysis. 
B)  oxidation. 
C)  decomposition. 
D)  dehydration synthesis. 
A)  hydrolysis. 
B)  oxidation. 
C)  decomposition. 
D)  dehydration synthesis.

Question 20

Enzymes that are exposed to high heat or low pH solutions lose their ability to function.What causes this to happen? Be specific.

Accepted Answer

Enzymes are biological catalysts that sp

Exam 2: B: The Chemical Basis of Life

Name and describe the types of radiation discussed in the chapter.

When two molecules of glucose are joined,they form which disaccharide?

The simple sugars that are the building blocks for other carbohydrates are:

Humans can synthesize 13 of 21 basic amino acids; the remaining 8,which must be included in the diet,are called:

The approximate pH of gastric fluid is:

The most abundant and important compound(s)in the body is(are):

A weak acid:

A magnesium atom has an atomic number of 12,an atomic mass of 25,and a +2 charge.This atom would contain _____ protons,_____ neutrons,and _____ electrons.

The type of chemical reaction most likely to require energy is _____ reaction.

If one side of a DNA molecule was CTAGGCTG,the other side would be:

Which level of protein structure is one that contains several polypeptide chains?

A solution with a pH of 4 has_____ times more _____ ions than a solution with a pH of 6.

The term that is used to describe all of the chemical reactions that occur in body cells is:

Explain what is meant by anabolism and catabolism and name a process that is an example of each.

Which of the following is not true of RNA?

The elements carbon,hydrogen,oxygen,and nitrogen make up which percentage of the human body?

Unsaturated fats:

When sodium (Na)gives up an electron to chlorine,the result is the formation of a sodium ion (Na⁺)with a positive charge.This happens because there is then one more _____ than _____.

The formation of sucrose involves the removal of a molecule of water.This is called:

Enzymes that are exposed to high heat or low pH solutions lose their ability to function.What causes this to happen? Be specific.

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

Filters

A magnesium atom has an atomic number of 12,an atomic mass of 25,and a +2 charge.This atom would contain ___ protons,_ neutrons,and ___ electrons.

A solution with a pH of 4 has_ times more _ ions than a solution with a pH of 6.

When sodium (Na)gives up an electron to chlorine,the result is the formation of a sodium ion (Na⁺)with a positive charge.This happens because there is then one more _ than _.