Question 1

Which of these pairs does not correctly match a carbohydrate with its function?

Accepted Answer

A)  Glycogen is the storage form of energy in animals. 
B)  Starch is the storage form of energy in plants. 
C)  Cellulose provides structural support for human hair. 
D)  Chitin provides an exoskeleton for insects. 
A)  Glycogen is the storage form of energy in animals. 
B)  Starch is the storage form of energy in plants. 
C)  Cellulose provides structural support for human hair. 
D)  Chitin provides an exoskeleton for insects.

Question 2

If a molecule is added to a glass of water,and is easily dissolved by the water,the added molecule is described as hydrophilic.

Accepted Answer

A) True 
 B)False

Question 3

The primary building block (monomer)of proteins is

Accepted Answer

A)  a glucose molecule. 
B)  a fatty acid. 
C)  a nucleotide. 
D)  an amino acid. 
E)  four interconnected rings. 
A)  a glucose molecule. 
B)  a fatty acid. 
C)  a nucleotide. 
D)  an amino acid. 
E)  four interconnected rings.

Question 4

A hydrogen bond

Accepted Answer

A)  is generally a strong bond. 
B)  does not occur in living organisms. 
C)  does not require electron transfer. 
D)  forms between atoms having the same electronegativity. 
E)  is a specialized type of covalent bond. 
A)  is generally a strong bond. 
B)  does not occur in living organisms. 
C)  does not require electron transfer. 
D)  forms between atoms having the same electronegativity. 
E)  is a specialized type of covalent bond.

Question 5

How does the formic acid in the venom of the tawny crazy ants protect them from the fire ant venom?

Accepted Answer

A)  It deactivates enzymes in the fire ant venom. 
B)  It raises the pH which crystallizes the fire ant venom. 
C)  It melts the lipids in the fire ant venom. 
D)  It turns the polysaccharides in the fire ant venom into monosaccharides. 
A)  It deactivates enzymes in the fire ant venom. 
B)  It raises the pH which crystallizes the fire ant venom. 
C)  It melts the lipids in the fire ant venom. 
D)  It turns the polysaccharides in the fire ant venom into monosaccharides.

Question 6

A base

Accepted Answer

A)  has a value of 7 on the pH scale. 
B)  is a chemical that adds hydrogen ions to a solution. 
C)  is a chemical that absorbs hydrogen ions from a solution. 
D)  has a value below 7 on the pH scale. 
A)  has a value of 7 on the pH scale. 
B)  is a chemical that adds hydrogen ions to a solution. 
C)  is a chemical that absorbs hydrogen ions from a solution. 
D)  has a value below 7 on the pH scale.

Question 7

An ion could be

Accepted Answer

A)  an atom that has gained electrons. 
B)  an atom that has a positive charge. 
C)  an atom that has lost electrons. 
D)  an atom that has a negative charge. 
E)  All answers are correct. 
A)  an atom that has gained electrons. 
B)  an atom that has a positive charge. 
C)  an atom that has lost electrons. 
D)  an atom that has a negative charge. 
E)  All answers are correct.

Question 8

As part of an exam,you are given a powder to analyze.When you perform various tests,you find that it contains a single chemical that changes the pH of neutral water to a pH of 6.You would conclude that the chemical is a

Accepted Answer

A)  weak acid. 
B)  neutral. 
C)  weak base. 
D)  strong acid. 
E)  strong base. 
A)  weak acid. 
B)  neutral. 
C)  weak base. 
D)  strong acid. 
E)  strong base.

Question 9

You can painlessly wade into a pool,but doing a belly flop off of the high diving board hurts because of

Accepted Answer

A)  water's higher density compared to the air. 
B)  adhesion of your molecules with the water molecules. 
C)  water's high boiling point. 
D)  a neutral pH. 
E)  cohesion of the water molecules. 
A)  water's higher density compared to the air. 
B)  adhesion of your molecules with the water molecules. 
C)  water's high boiling point. 
D)  a neutral pH. 
E)  cohesion of the water molecules.

Question 10

The primary building block (monomer)of nucleic acids is

Accepted Answer

A)  a nucleotide. 
B)  a glucose molecule. 
C)  a fatty acid. 
D)  an amino acid. 
E)  four interconnected carbon rings. 
A)  a nucleotide. 
B)  a glucose molecule. 
C)  a fatty acid. 
D)  an amino acid. 
E)  four interconnected carbon rings.

Question 11

You are asked to help solve a murder,and a note from the murderer taunting the police says that the crime was committed using a lipid.What molecule could you exclude from your search?

Accepted Answer

A)  a triglyceride 
B)  a phospholipid 
C)  a wax 
D)  a sterol 
E)  a starch molecule 
A)  a triglyceride 
B)  a phospholipid 
C)  a wax 
D)  a sterol 
E)  a starch molecule

Question 12

A process by which cells break polymers down into smaller units is

Accepted Answer

A)  hydrolysis. 
B)  dehydration synthesis. 
C)  reproduction. 
D)  hydrolysis and dehydration synthesis. 
E)  unrelated to chemical bonds. 
A)  hydrolysis. 
B)  dehydration synthesis. 
C)  reproduction. 
D)  hydrolysis and dehydration synthesis. 
E)  unrelated to chemical bonds.

Question 13

The four major groups of organic compounds are

Accepted Answer

A)  fats, waxes, carbohydrates, and amino acids. 
B)  carbohydrates, lipids, steroids, and monosaccharides. 
C)  lipids, fats, waxes, and steroids. 
D)  carbohydrates, lipids, proteins, and nucleic acids. 
E)  carbohydrates, proteins, amino acids, and nucleic acids. 
A)  fats, waxes, carbohydrates, and amino acids. 
B)  carbohydrates, lipids, steroids, and monosaccharides. 
C)  lipids, fats, waxes, and steroids. 
D)  carbohydrates, lipids, proteins, and nucleic acids. 
E)  carbohydrates, proteins, amino acids, and nucleic acids.

Question 14

Two hydrogen atoms and an oxygen atom bonded together form

Accepted Answer

A)  a molecule, but not a compound. 
B)  a compound, but not a molecule. 
C)  a molecule and a compound. 
D)  an atom and a molecule. 
E)  an atom, but not a molecule or compound. 
A)  a molecule, but not a compound. 
B)  a compound, but not a molecule. 
C)  a molecule and a compound. 
D)  an atom and a molecule. 
E)  an atom, but not a molecule or compound.

Question 15

If asked to build a model of an amino acid,you would need parts to represent

Accepted Answer

A)  three R groups and a glycerol. 
B)  nitrogen, carbon, and an R group. 
C)  multiple saccharide rings. 
D)  carbon and phosphorus monomers. 
E)  carbon and phosphorus. 
A)  three R groups and a glycerol. 
B)  nitrogen, carbon, and an R group. 
C)  multiple saccharide rings. 
D)  carbon and phosphorus monomers. 
E)  carbon and phosphorus.

Question 16

Tawny crazy ants survive a fire ant's sting by having a

Accepted Answer

A)  venom that detoxifies the fire ant venom. 
B)  more potent venom than the fire ant venom. 
C)  hard carapace that protects the crazy ants. 
D)  lipid that coats their skin. 
A)  venom that detoxifies the fire ant venom. 
B)  more potent venom than the fire ant venom. 
C)  hard carapace that protects the crazy ants. 
D)  lipid that coats their skin.

Question 17

In the example of ionic bond formation between sodium and chlorine

Accepted Answer

A)  Na is the chemical symbol for chlorine. 
B)  sodium accepts an electron. 
C)  chlorine accepts an electron. 
D)  chlorine becomes positively charged. 
E)  both sodium and chlorine accept electrons. 
A)  Na is the chemical symbol for chlorine. 
B)  sodium accepts an electron. 
C)  chlorine accepts an electron. 
D)  chlorine becomes positively charged. 
E)  both sodium and chlorine accept electrons.

Question 18

Saturated fats have long,straight tails of fatty acids,whereas unsaturated fats from vegetables have kinks in their tails due to double bonds.These kinks prevent the fats from packing together as tightly.Hydrogenated vegetable oils,or trans fats,have hydrogens added back to the double bonds and thus behave like

Accepted Answer

A)  unsaturated fats. 
B)  waxes. 
C)  carbohydrates. 
D)  proteins. 
E)  saturated fats. 
A)  unsaturated fats. 
B)  waxes. 
C)  carbohydrates. 
D)  proteins. 
E)  saturated fats.

Exam 2: The Chemistry of Life

Which of these pairs does not correctly match a carbohydrate with its function?

If a molecule is added to a glass of water,and is easily dissolved by the water,the added molecule is described as hydrophilic.

The primary building block (monomer)of proteins is

A hydrogen bond

How does the formic acid in the venom of the tawny crazy ants protect them from the fire ant venom?

A base

An ion could be

As part of an exam,you are given a powder to analyze.When you perform various tests,you find that it contains a single chemical that changes the pH of neutral water to a pH of 6.You would conclude that the chemical is a

You can painlessly wade into a pool,but doing a belly flop off of the high diving board hurts because of

The primary building block (monomer)of nucleic acids is

You are asked to help solve a murder,and a note from the murderer taunting the police says that the crime was committed using a lipid.What molecule could you exclude from your search?

A process by which cells break polymers down into smaller units is

The four major groups of organic compounds are

Two hydrogen atoms and an oxygen atom bonded together form

If asked to build a model of an amino acid,you would need parts to represent

Tawny crazy ants survive a fire ant's sting by having a

In the example of ionic bond formation between sodium and chlorine

The Scientific Study of Life

Cells

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

The Digestive and Urinary Systems

The Immune System

Animal Reproduction and Development

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