Question 1

An acid

Accepted Answer

A)   has a value above seven on the pH scale.
B)   is a chemical that takes hydrogen ions from a solution.
C)   has a value of seven on the pH scale.
D)   is a chemical that adds hydrogen ions to a solution.
E)   All of the answer choices are correct.F) A) and B)
G) C) and D)

Question 2

The property of water demonstrated by this water strider,as it remains on top of the water,is that water is a universal solvent.

Accepted Answer

A) True 
 B)False

Question 3

A conscientious person habitually reads nutrition labels on food packages for weight watching and general health.The main nutritional molecules are made up of

Accepted Answer

A)   buffers.
B)   trace elements.
C)   isotopes.
D)   bulk elements.E) B) and C)
F) A) and D)

Question 4

Evaporation of water is

Accepted Answer

A)   a phase change of water from liquid into a vapor.
B)   a phase change of water from solid into a vapor.
C)   a phase change of water from vapor into a liquid.
D)   a phase change of water from vapor into a solid.
E)   All of the answer choices are correct.F) All of the above
G) D) and E)

Question 5

The unique properties of water,including its strength as a solvent,its three environmental stages of solid,liquid,and gas,and its temperature regulation,are a result of

Accepted Answer

A)   symmetric balance of electronegativity as shared electrons orbit equally around the hydrogens and oxygens.
B)   the cohesion and adhesion of water molecules that bond more strongly to each other than other substances.
C)   unbalanced electronegativity of the hydrogens and oxygens as they share electrons.
D)   the imbalance in numbers of electrons around hydrogen and oxygen valence shells after they ionically bond.E) A) and B)
F) A) and C)

Question 6

Which statement summarizes the distinction between nonpolar and polar covalent bonds?

Accepted Answer

A)   The electrons are more evenly and symmetrically distributed in orbit among atoms in a nonpolar covalent bond.
B)   Polar covalent bonds are formed when the atoms gain or lose electrons to bond, and become oppositely charged ions.
C)   The difference in electronegativity of the atoms in a nonpolar covalent bond is very large.
D)   The electrons are more evenly and symmetrically distributed in orbit among atoms in a polar covalent bond.E) C) and D)
F) B) and D)

Question 7

Figuer:
Examine this image of the glucose molecule. 
-Compared with a molecule of glucose,this starch molecule does NOT have which characteristic below?

Accepted Answer

A)   This molecule is used by cells for long-term storage and release of energy for cell functions.
B)   This molecule is used by cells for quick release of energy for cell functions.
C)   This molecule can provide structure for cells that contain it.
D)   This molecule is a complex carbohydrate polymer.E) A) and D)
F) None of the above

Question 8

A peptide bond is a covalent bond formed between the amino group of one amino acid and the R group of another amino acid.

Accepted Answer

A) True 
 B)False

Question 9

In an ionic bond,

Accepted Answer

A)   two atoms both become strongly electronegative and attract each other.
B)   atoms attract each other by sharing electrons to fill their valence shells.
C)   atoms, having gained or lost electrons, attract one another with opposite charges.
D)   two atoms are attracted by partial positive and negative charges.E) A) and D)
F) C) and D)

Question 10

In a covalent bond,atoms

Accepted Answer

A)   share a proton.
B)   share electrons.
C)   of opposite charges attract each other.
D)   both become highly electronegative.E) B) and C)
F) A) and D)

Question 11

An element is found to have atoms with eight electrons in its valence shell.The atoms will be ____

Accepted Answer

A)   highly reactive.
B)   not chemically stable.
C)   chemically stable.
D)   highly likely to combine with other atoms.
E)   not inert.F) A) and B)
G) None of the above

Question 12

The primary elements making up living organisms are

Accepted Answer

A)   carbon, hydrogen, oxygen, sulfur, nitrogen, and phosphorus.
B)   carbon, hydrogen, iron, sulfur, sodium, and calcium.
C)   carbon, oxygen, iron, chlorine, sulfur, and phosphorus.
D)   carbon, hydrogen, oxygen, calcium, iron, and iodine.
E)   carbon, oxygen, sulfur, calcium, iron, and phosphorus.F) A) and B)
G) A) and C)

Question 13

Figuer:
Examine these two sugars, as shown prior to the chemical reaction that would bond them. 
-These glucose and fructose molecules will bond to form a monosaccharide with the removal of water.

Accepted Answer

A) True 
 B)False

Question 14

The four nitrogen bases found in RNA are

Accepted Answer

A)   adenine, thymine, guanine, and uracil.
B)   adenine, cytosine, guanine, and uracil.
C)   adenine, thymine, cytosine, and uracil.
D)   thymine, cytosine, guanine, and uracil.
E)   None of the answer choices are correct.F) A) and D)
G) D) and E)

Question 15

Proteins store the genetic information of the cell and transmit it to the next generation.

Accepted Answer

A) True 
 B)False

Question 16

A base

Accepted Answer

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

Question 17

Among numerous functions of common proteins,which of these pairs does not correctly match a protein with its function?

Accepted Answer

A)   DNA polymerase helps synthesize new DNA before our cells divide.
B)   Antibodies regulate sweat to keep infections out of our skin pores.
C)   Collagen is a structural protein to support hair, skin, and nails.
D)   Insulin regulates blood glucose levels.
E)   Hemoglobin protein transports oxygen to our cells.F) A) and B)
G) B) and D)

Question 18

The mass number is defined as the total number of __________ of an atom.

Accepted Answer

A)   neutrons and electrons
B)   protons
C)   protons, neutrons, and electrons
D)   protons and neutrons
E)   protons and electronsF) B) and E)
G) A) and B)

Question 19

The atomic number of an element is the number of

Accepted Answer

A)   protons in the orbitals.
B)   neutrons in the orbitals.
C)   neutrons in the nucleus.
D)   protons in the nucleus.
E)   electrons in the nucleus.F) A) and B)
G) A) and C)

Question 20

Saturated fats have long straight tails of fatty acids,while 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)   carbohydrates.
B)   waxes.
C)   unsaturated fats.
D)   saturated fats.
E)   proteins.F) A) and E)
G) B) and E)

Exam 2: The Chemistry of Life

Among numerous functions of common proteins,which of these pairs does not correctly match a protein with its function?

Correct Answer
verified

In an ionic bond,

Correct Answer
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Figuer: Examine this image of the glucose molecule. -Compared with a molecule of glucose,this starch molecule does NOT have which characteristic below?

Correct Answer
verified

The unique properties of water,including its strength as a solvent,its three environmental stages of solid,liquid,and gas,and its temperature regulation,are a result of

Correct Answer
verified

Proteins store the genetic information of the cell and transmit it to the next generation.

Correct Answer
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Which statement summarizes the distinction between nonpolar and polar covalent bonds?

Correct Answer
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A base

Correct Answer
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A peptide bond is a covalent bond formed between the amino group of one amino acid and the R group of another amino acid.

Correct Answer
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The mass number is defined as the total number of __________ of an atom.

Correct Answer
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In a covalent bond,atoms

Correct Answer
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The primary elements making up living organisms are

Correct Answer
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An acid

Correct Answer
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The four nitrogen bases found in RNA are

Correct Answer
verified

A conscientious person habitually reads nutrition labels on food packages for weight watching and general health.The main nutritional molecules are made up of

Correct Answer
verified

Figuer: Examine these two sugars, as shown prior to the chemical reaction that would bond them. -These glucose and fructose molecules will bond to form a monosaccharide with the removal of water.

Correct Answer
verified

Evaporation of water is

Correct Answer
verified

The atomic number of an element is the number of

Correct Answer
verified

The property of water demonstrated by this water strider,as it remains on top of the water,is that water is a universal solvent.

Correct Answer
verified

An element is found to have atoms with eight electrons in its valence shell.The atoms will be ____

Correct Answer
verified

Correct Answer
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Exam 2: The Chemistry of Life

Among numerous functions of common proteins,which of these pairs does not correctly match a protein with its function?

Correct AnswerverifiedShow Answer

In an ionic bond,

Correct AnswerverifiedShow Answer

Figuer: Examine this image of the glucose molecule. -Compared with a molecule of glucose,this starch molecule does NOT have which characteristic below?

Correct AnswerverifiedShow Answer

The unique properties of water,including its strength as a solvent,its three environmental stages of solid,liquid,and gas,and its temperature regulation,are a result of

Correct AnswerverifiedShow Answer

Proteins store the genetic information of the cell and transmit it to the next generation.

Correct AnswerverifiedShow Answer

Which statement summarizes the distinction between nonpolar and polar covalent bonds?

Correct AnswerverifiedShow Answer

A base

Correct AnswerverifiedShow Answer

A peptide bond is a covalent bond formed between the amino group of one amino acid and the R group of another amino acid.

Correct AnswerverifiedShow Answer

The mass number is defined as the total number of __________ of an atom.

Correct AnswerverifiedShow Answer

In a covalent bond,atoms

Correct AnswerverifiedShow Answer

The primary elements making up living organisms are

Correct AnswerverifiedShow Answer

An acid

Correct AnswerverifiedShow Answer

The four nitrogen bases found in RNA are

Correct AnswerverifiedShow Answer

A conscientious person habitually reads nutrition labels on food packages for weight watching and general health.The main nutritional molecules are made up of

Correct AnswerverifiedShow Answer

Figuer: Examine these two sugars, as shown prior to the chemical reaction that would bond them. -These glucose and fructose molecules will bond to form a monosaccharide with the removal of water.

Correct AnswerverifiedShow Answer

Evaporation of water is

Correct AnswerverifiedShow Answer

The atomic number of an element is the number of

Correct AnswerverifiedShow Answer

The property of water demonstrated by this water strider,as it remains on top of the water,is that water is a universal solvent.

Correct AnswerverifiedShow Answer

An element is found to have atoms with eight electrons in its valence shell.The atoms will be ____

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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