Question 1

An element cannot be broken down by chemical means.

Accepted Answer

A) True 
 B)False  True

Question 2

Examine the section of the periodic table in Figure 2.1.Which element will behave similarly to C?

Accepted Answer

A)  Ca 
B)  S 
C)  Ar 
D)  Si 
E)  Mg 
A)  Ca 
B)  S 
C)  Ar 
D)  Si 
E)  Mg D

Question 3

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

Accepted Answer

A)  a hydrolysis reaction. 
B)  a dehydration reaction. 
C)  monomerization. 
D)  emulsification. 
E)  disassembly. 
A)  a hydrolysis reaction. 
B)  a dehydration reaction. 
C)  monomerization. 
D)  emulsification. 
E)  disassembly. B

Question 4

CaCl2 is a salt that forms as the result of what type of bond?

Accepted Answer

A)  covalent 
B)  hydrogen 
C)  polar 
D)  non-polar 
E)  ionic 
A)  covalent 
B)  hydrogen 
C)  polar 
D)  non-polar 
E)  ionic

Question 5

A fatty acid that contains only single bonds between the carbon atoms is considered

Accepted Answer

A)  saturated. 
B)  unsaturated. 
C)  trans unsaturated. 
A)  saturated. 
B)  unsaturated. 
C)  trans unsaturated.

Question 6

On a warm day in April,Tina jumped into the swimming pool.To her surprise the water was really cold.Which property of water did she discover?

Accepted Answer

A)  Water molecules are cohesive. 
B)  The temperature of liquid water rises and falls slowly. 
C)  Water possesses hydrogen bonds. 
D)  Water is a polar molecule. 
E)  Frozen water is less dense than liquid water. 
A)  Water molecules are cohesive. 
B)  The temperature of liquid water rises and falls slowly. 
C)  Water possesses hydrogen bonds. 
D)  Water is a polar molecule. 
E)  Frozen water is less dense than liquid water.

Question 7

Be has an atomic number of 4 and an atomic mass of 9.How many protons does it have?

Accepted Answer

A)  4 
B)  5 
C)  9 
D)  13 
A)  4 
B)  5 
C)  9 
D)  13

Question 8

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 9

Ca3(PO4)2 represents a/an

Accepted Answer

A)  element. 
B)  mixture. 
C)  compound. 
D)  isotope. 
E)  atom. 
A)  element. 
B)  mixture. 
C)  compound. 
D)  isotope. 
E)  atom.

Question 10

A combination of two or more atoms of the same type is called

Accepted Answer

A)  an atomic unit. 
B)  a molecule. 
C)  a compound. 
D)  an isotope. 
E)  an ion. 
A)  an atomic unit. 
B)  a molecule. 
C)  a compound. 
D)  an isotope. 
E)  an ion.

Question 11

What is iodine 131,used in medicine to produce various images of organs and tissues,called?

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 12

A hydrolysis reaction involves the loss of water.

Accepted Answer

A) True 
 B)False

Question 13

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 1 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 1 fatty acid. 
D)  They do not dissolve in water. 
E)  They all contain at least one carbon ring.

Question 14

The sides of the DNA ladder (backbone)are

Accepted Answer

A)  alternating carbons and nitrogens. 
B)  the R groups. 
C)  the nitrogenous bases. 
D)  alternating nitrogens and phosphates. 
E)  sugars and phosphates. 
A)  alternating carbons and nitrogens. 
B)  the R groups. 
C)  the nitrogenous bases. 
D)  alternating nitrogens and phosphates. 
E)  sugars and phosphates.

Question 15

The sex hormones belong to which category of lipids?

Accepted Answer

A)  steroids 
B)  fats 
C)  oils 
D)  triglycerides 
E)  phospholipids 
A)  steroids 
B)  fats 
C)  oils 
D)  triglycerides 
E)  phospholipids

Question 16

What makes each amino acid unique?

Accepted Answer

A)  the central carbon 
B)  the R group 
C)  the amino group 
D)  the carboxyl group 
A)  the central carbon 
B)  the R group 
C)  the amino group 
D)  the carboxyl group

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

The presence of a buffer in our blood is an example of homeostasis.

Accepted Answer

A) True 
 B)False

Question 19

Carbon dating is a common method employed in dating certain kinds of fossils.It is based upon the radioactive decay of an isotope of carbon (C14).Referring to the atomic number of carbon attained from figure 2.1,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 20

Which of the following is not a function of proteins?

Accepted Answer

A)  quick energy 
B)  support 
C)  transport 
D)  enzymes 
E)  motion 
A)  quick energy 
B)  support 
C)  transport 
D)  enzymes 
E)  motion

Exam 2: Chemistry of Life

An element cannot be broken down by chemical means.

Examine the section of the periodic table in Figure 2.1.Which element will behave similarly to C?

Joining small molecules (monomers)together to form longer chains (polymers)requires a process called

CaCl2 is a salt that forms as the result of what type of bond?

A fatty acid that contains only single bonds between the carbon atoms is considered

On a warm day in April,Tina jumped into the swimming pool.To her surprise the water was really cold.Which property of water did she discover?

Be has an atomic number of 4 and an atomic mass of 9.How many protons does it have?

Atoms that share electrons have what type of bonds?

Ca3(PO4)2 represents a/an

A combination of two or more atoms of the same type is called

What is iodine 131,used in medicine to produce various images of organs and tissues,called?

A hydrolysis reaction involves the loss of water.

How are fats,phospholipids,and steroids alike?

The sides of the DNA ladder (backbone)are

The sex hormones belong to which category of lipids?

What makes each amino acid unique?

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

The presence of a buffer in our blood is an example of homeostasis.

Carbon dating is a common method employed in dating certain kinds of fossils.It is based upon the radioactive decay of an isotope of carbon (C14).Referring to the atomic number of carbon attained from figure 2.1,how many neutrons does C14 have?

Which of the following is not a function of proteins?

Exploring Life and Science

Cell Structure and Function

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System and Excretion

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

DNA Biology and Technology

Human Evolution

Global Ecology and Human Interferences

Human Population, planetary Resources, and Conservation

Infectious Diseases Supplement

Filters

CaCl₂ is a salt that forms as the result of what type of bond?

Ca₃(PO₄)₂ represents a/an

Carbon dating is a common method employed in dating certain kinds of fossils.It is based upon the radioactive decay of an isotope of carbon (C¹⁴).Referring to the atomic number of carbon attained from figure 2.1,how many neutrons does C¹⁴ have?