Question 1

The negative subatomic particle is (are) the

Accepted Answer

A)  neutron. 
B)  proton. 
C)  electron. 
D)  neutron and proton. 
E)  proton and electron. 
A)  neutron. 
B)  proton. 
C)  electron. 
D)  neutron and proton. 
E)  proton and electron.

Question 2

The nucleus of an atom contains

Accepted Answer

A)  neutrons and protons. 
B)  neutrons and electrons. 
C)  protons and electrons. 
D)  protons only. 
E)  neutrons only. 
A)  neutrons and protons. 
B)  neutrons and electrons. 
C)  protons and electrons. 
D)  protons only. 
E)  neutrons only.

Question 3

Selecting the Exception Four of the five answers listed below are lipids. Select the exception.

Accepted Answer

A)  triglyceride 
B)  wax 
C)  oil 
D)  insulin 
E)  steroid 
A)  triglyceride 
B)  wax 
C)  oil 
D)  insulin 
E)  steroid

Question 4

A molecule consisting of three fatty acid tails attached to glycerol is a(n)

Accepted Answer

A)  carbohydrate. 
B)  nucleic acid. 
C)  triglyceride. 
D)  amino acid. 
E)  oil. 
A)  carbohydrate. 
B)  nucleic acid. 
C)  triglyceride. 
D)  amino acid. 
E)  oil.

Question 5

Condensation reactions are also referred to as

Accepted Answer

A)  hydrolysis. 
B)  dehydration synthesis. 
C)  lytic reactions. 
D)  recombination. 
E)  transmutation. 
A)  hydrolysis. 
B)  dehydration synthesis. 
C)  lytic reactions. 
D)  recombination. 
E)  transmutation.

Question 6

Which of the following are lipids?

Accepted Answer

A)  steroids 
B)  triglycerides 
C)  oils 
D)  waxes 
E)  all of these 
A)  steroids 
B)  triglycerides 
C)  oils 
D)  waxes 
E)  all of these

Question 7

Water stabilizes body temperature and dissolves many substances because

Accepted Answer

A)  it evaporates easily. 
B)  its molecules are covalent. 
C)  its molecules are ionic. 
D)  it contains hydrogen bonds. 
E)  it is free of minerals. 
A)  it evaporates easily. 
B)  its molecules are covalent. 
C)  its molecules are ionic. 
D)  it contains hydrogen bonds. 
E)  it is free of minerals.

Question 8

Which of the following is not a derivative of cholesterol is

Accepted Answer

A)  vitamin D 
B)  bile salts 
C)  estrogen 
D)  testosterone 
E)  amino acid 
A)  vitamin D 
B)  bile salts 
C)  estrogen 
D)  testosterone 
E)  amino acid

Question 9

In what year did chemists begin developing synthetic toxins to protect crops?

Accepted Answer

A)  1865 
B)  1900 
C)  1925 
D)  1945 
E)  1960 
A)  1865 
B)  1900 
C)  1925 
D)  1945 
E)  1960

Question 10

Most of the carbohydrates eaten by humans are in the form of

Accepted Answer

A)  monosaccharides. 
B)  polysaccharides. 
C)  oligosaccharides. 
D)  disaccharides. 
E)  five carbon sugars. 
A)  monosaccharides. 
B)  polysaccharides. 
C)  oligosaccharides. 
D)  disaccharides. 
E)  five carbon sugars.

Question 11

In a polar covalent bond, the atoms of the different elements do not share electrons equally because

Accepted Answer

A)  one is a metal and one is a non-metal. 
B)  both are metals. 
C)  both are non-metals. 
D)  one element has more neutrons. 
E)  one element has more protons. 
A)  one is a metal and one is a non-metal. 
B)  both are metals. 
C)  both are non-metals. 
D)  one element has more neutrons. 
E)  one element has more protons.

Question 12

A lipoprotein is a combination of a protein and

Accepted Answer

A)  cholesterol, triglycerides and phospholipids. 
B)  oligosaccharides. 
C)  fatty acids. 
D)  nucleic acids. 
E)  collagen. 
A)  cholesterol, triglycerides and phospholipids. 
B)  oligosaccharides. 
C)  fatty acids. 
D)  nucleic acids. 
E)  collagen.

Question 13

Nucleotides contain what kind of sugars?

Accepted Answer

A)  three carbon 
B)  four carbon 
C)  five carbon 
D)  six carbon 
E)  seven carbon 
A)  three carbon 
B)  four carbon 
C)  five carbon 
D)  six carbon 
E)  seven carbon

Question 14

Selecting the Exception Four of the five answers listed below are dissolved substances found in cells. Select the exception.

Accepted Answer

A)  nucleotides 
B)  sugars 
C)  amino acids 
D)  alcohols 
E)  fatty acids 
A)  nucleotides 
B)  sugars 
C)  amino acids 
D)  alcohols 
E)  fatty acids

Question 15

Stored sugar in animal muscles and liver is in the form of

Accepted Answer

A)  starch. 
B)  glycogen. 
C)  glucose. 
D)  cellulose. 
E)  fats. 
A)  starch. 
B)  glycogen. 
C)  glucose. 
D)  cellulose. 
E)  fats.

Question 16

All atoms of an element have the same number of

Accepted Answer

A)  ions. 
B)  protons. 
C)  neutrons. 
D)  electrons. 
E)  protons and neutrons. 
A)  ions. 
B)  protons. 
C)  neutrons. 
D)  electrons. 
E)  protons and neutrons.

Question 17

Substances that give up an electron to a free radical are called

Accepted Answer

A)  reducing agents. 
B)  oxidizing agents. 
C)  neutralizing agents. 
D)  antibiotics. 
E)  antioxidants. 
A)  reducing agents. 
B)  oxidizing agents. 
C)  neutralizing agents. 
D)  antibiotics. 
E)  antioxidants.

Question 18

a(n. ____ consists of two or more bonded elements in proportions that never vary.

Accepted Answer

A)  ion 
B)  mixture 
C)  compound 
D)  network solid 
E)  satisfied orbital 
A)  ion 
B)  mixture 
C)  compound 
D)  network solid 
E)  satisfied orbital

Question 19

The time it takes for half of a quantity of a radioisotope to decay into a more stable isotope is

Accepted Answer

A)  the same for all elements. 
B)  decay time. 
C)  half-life. 
D)  disintegration time. 
E)  dependent on temperature. 
A)  the same for all elements. 
B)  decay time. 
C)  half-life. 
D)  disintegration time. 
E)  dependent on temperature.

Question 20

Selecting the Exception Four of the five answers listed below are acidic (pH below 7). Select the exception.

Accepted Answer

A)  vinegar 
B)  soft drink 
C)  soap 
D)  lemon juice 
E)  beer 
A)  vinegar 
B)  soft drink 
C)  soap 
D)  lemon juice 
E)  beer

Exam 2: Chemistry of Life

The negative subatomic particle is (are) the

The nucleus of an atom contains

Selecting the Exception Four of the five answers listed below are lipids. Select the exception.

A molecule consisting of three fatty acid tails attached to glycerol is a(n)

Condensation reactions are also referred to as

Which of the following are lipids?

Water stabilizes body temperature and dissolves many substances because

Which of the following is not a derivative of cholesterol is

In what year did chemists begin developing synthetic toxins to protect crops?

Most of the carbohydrates eaten by humans are in the form of

In a polar covalent bond, the atoms of the different elements do not share electrons equally because

A lipoprotein is a combination of a protein and

Nucleotides contain what kind of sugars?

Selecting the Exception Four of the five answers listed below are dissolved substances found in cells. Select the exception.

Stored sugar in animal muscles and liver is in the form of

All atoms of an element have the same number of

Substances that give up an electron to a free radical are called

a(n. ____ consists of two or more bonded elements in proportions that never vary.

The time it takes for half of a quantity of a radioisotope to decay into a more stable isotope is

Selecting the Exception Four of the five answers listed below are acidic (pH below 7). Select the exception.

Learning About Human Biology

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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