Question 1

Radiation can have both positive and negative impact on humans.

Accepted Answer

A) True 
 B)False

Question 2

All amino acids are alike in that their R groups are polar.

Accepted Answer

A) True 
 B)False

Question 3

Which polysaccharide is branched the most?

Accepted Answer

A)  cellulose 
B)  starch 
C)  glycogen 
D)  glucose 
E)  fructose 
A)  cellulose 
B)  starch 
C)  glycogen 
D)  glucose 
E)  fructose

Question 4

Which polysacccharide is stored as an energy source in the body of animals?

Accepted Answer

A)  glycogen 
B)  glucose 
C)  cellulose 
D)  starch 
E)  chitin 
A)  glycogen 
B)  glucose 
C)  cellulose 
D)  starch 
E)  chitin

Question 5

In an atom, the number of protons always equals the number of

Accepted Answer

A)  electrons. 
B)  neutrons. 
C)  neutrons and protons. 
D)  quarks. 
E)  neutrinos. 
A)  electrons. 
B)  neutrons. 
C)  neutrons and protons. 
D)  quarks. 
E)  neutrinos.

Question 6

Sugars with three to seven carbon atoms are called

Accepted Answer

A)  monosaccharides. 
B)  disaccharides. 
C)  trisaccharides. 
D)  polysaccharides. 
E)  steroids. 
A)  monosaccharides. 
B)  disaccharides. 
C)  trisaccharides. 
D)  polysaccharides. 
E)  steroids.

Question 7

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Accepted Answer

A)  Water is liquid at room temperature. 
B)  Water has a high heat of vaporization. 
C)  The temperature of liquid water rises and falls slowly. 
D)  Frozen water is less dense than liquid water. 
E)  Water molecules are cohesive. 
A)  Water is liquid at room temperature. 
B)  Water has a high heat of vaporization. 
C)  The temperature of liquid water rises and falls slowly. 
D)  Frozen water is less dense than liquid water. 
E)  Water molecules are cohesive.

Question 8

Carbon dating is a common method employed in dating certain kinds of fossils. It is based on the radioactive decay of an isotope of carbon C14). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C14 have?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  12 
E)  14 
A)  2 
B)  4 
C)  8 
D)  12 
E)  14

Question 9

Atoms that share electrons have what type of bonds?

Accepted Answer

A)  covalent 
B)  neutral 
C)  hydrogen 
D)  colloidal 
E)  ionic 
A)  covalent 
B)  neutral 
C)  hydrogen 
D)  colloidal 
E)  ionic

Question 10

In an acidic solution, the number of H+ is

Accepted Answer

A)  less than the number of OH-. 
B)  greater than the number of OH-. 
C)  equal to the number of OH-. 
D)  3 times less than the number of OH-. 
E)  10 times less than the number of OH-. 
A)  less than the number of OH-. 
B)  greater than the number of OH-. 
C)  equal to the number of OH-. 
D)  3 times less than the number of OH-. 
E)  10 times less than the number of OH-.

Question 11

How are fats, phospholipids, and steroids alike?

Accepted Answer

A)  They are all solid at room temperature. 
B)  They each contain a polar phosphate group. 
C)  They each contain only one fatty acid. 
D)  They do not dissolve in water. 
E)  They all contain at least one carbon ring. 
A)  They are all solid at room temperature. 
B)  They each contain a polar phosphate group. 
C)  They each contain only one fatty acid. 
D)  They do not dissolve in water. 
E)  They all contain at least one carbon ring.

Question 12

What substance is used in medicine to produce various images of organs and tissues?

Accepted Answer

A)  a mixture 
B)  a tracer 
C)  an emulsion 
D)  a colloid 
E)  a sensor 
A)  a mixture 
B)  a tracer 
C)  an emulsion 
D)  a colloid 
E)  a sensor

Question 13

ATP carries energy in the form of high-energy

Accepted Answer

A)  carbohydrate bonds. 
B)  peptide bonds. 
C)  lipid bonds. 
D)  phosphate bonds. 
E)  hydrogen bonds. 
A)  carbohydrate bonds. 
B)  peptide bonds. 
C)  lipid bonds. 
D)  phosphate bonds. 
E)  hydrogen bonds.

Question 14

ATP is called the energy currency of the body because it is a type of electricity.

Accepted Answer

A) True 
 B)False

Question 15

The presence of a buffer in our blood helps maintain homeostasis.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is not present in a nucleotide?

Accepted Answer

A)  phosphate 
B)  nitrogenous base 
C)  five-ring sugar 
D)  an R group 
E)  a pentose 
A)  phosphate 
B)  nitrogenous base 
C)  five-ring sugar 
D)  an R group 
E)  a pentose

Question 17

A species has 29% of its DNA composed of the nucleotide containing guanine G). What percent does the nitrogen base thymine T) equal?

Accepted Answer

A)  58% 
B)  42% 
C)  21% 
D)  67% 
E)  29% 
A)  58% 
B)  42% 
C)  21% 
D)  67% 
E)  29%

Question 18

The primary level of protein structure is composed of amino acids in a linear sequence joined by peptide bonds.

Accepted Answer

A) True 
 B)False

Question 19

Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

Accepted Answer

A)  secondary structure 
B)  primary structure 
C)  tertiary structure 
D)  quaternary structure 
E)  pentagonal structure 
A)  secondary structure 
B)  primary structure 
C)  tertiary structure 
D)  quaternary structure 
E)  pentagonal structure

Question 20

When an ATP molecule is used to supply energy, which of the following occurs?

Accepted Answer

A)  a phosphate bond is added 
B)  a phosphate bond is broken 
C)  oxygen is removed 
D)  oxygen is added 
E)  an adenine is added 
A)  a phosphate bond is added 
B)  a phosphate bond is broken 
C)  oxygen is removed 
D)  oxygen is added 
E)  an adenine is added

Exam 2: Chemistery of Life

Radiation can have both positive and negative impact on humans.

All amino acids are alike in that their R groups are polar.

Which polysaccharide is branched the most?

Which polysacccharide is stored as an energy source in the body of animals?

In an atom, the number of protons always equals the number of

Sugars with three to seven carbon atoms are called

Which of the following characteristics of water is most responsible for the sinking of the Titanic?

Carbon dating is a common method employed in dating certain kinds of fossils. It is based on the radioactive decay of an isotope of carbon C14). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C14 have?

Atoms that share electrons have what type of bonds?

In an acidic solution, the number of H+ is

How are fats, phospholipids, and steroids alike?

What substance is used in medicine to produce various images of organs and tissues?

ATP carries energy in the form of high-energy

ATP is called the energy currency of the body because it is a type of electricity.

The presence of a buffer in our blood helps maintain homeostasis.

Which of the following is not present in a nucleotide?

A species has 29% of its DNA composed of the nucleotide containing guanine G). What percent does the nitrogen base thymine T) equal?

The primary level of protein structure is composed of amino acids in a linear sequence joined by peptide bonds.

Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

When an ATP molecule is used to supply energy, which of the following occurs?

Human Organization

Cell Structure and Function

Torganization and Regulation of Body Systems

Cardiovascular System : Heart and Blood Vessels

Cardiovascular System : Blood

The Lumphatic and Immune Systems

Biology of Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocring System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

Dna Piology and Technology

Hummen Evolution

Ecology and the Nature of Ecosystems

Hummen Interactions With the Biosphere

Filters

Carbon dating is a common method employed in dating certain kinds of fossils. It is based on the radioactive decay of an isotope of carbon C¹⁴). Referring to the atomic number of carbon attained from the periodic table, how many neutrons does C¹⁴ have?

In an acidic solution, the number of H⁺ is