Question 1

Monomers that can be commonly made from components in Earth's atmosphere are

Accepted Answer

A)   nucleotides.
B)   amino acids.
C)   triglycerides.
D)   monosaccharides.E) A) and B)
F) A) and C)

Question 2

The number that represents neutrality on the pH scale is ________.

Accepted Answer

The answer of The number that represents neutrality on the...

Question 3

One of the symptoms of kidney disease is the presence of proteins in a patient's urine.To quickly test for kidney disease using a urine sample,a doctor might add a chemical that causes a color change when

Accepted Answer

A)   nitrogen,but not oxygen,is present.
B)   nitrogen,but not phosphorus,is present.
C)   only oxygen and hydrogen are present.
D)   only carbon and hydrogen are present.E) None of the above
F) A) and D)

Question 4

Using the figure below,contrast the abundance of nitrogen,oxygen,and carbon in Earth's atmosphere and the human body.Address the reason for the difference in the abundance of carbon.

Accepted Answer

Nitrogen is much more abundant in Earth'...

Question 5

Which of the following statements is true of proteins,carbohydrates,and nucleic acids?

Accepted Answer

A)   All three are used to store genetic information.
B)   None of these macromolecules mixes well with water.
C)   Each of these molecules is built from a common set of monomers.
D)   All of these molecules are primarily used as energy-storage molecules.E) A) and C)
F) A) and B)

Question 6

Which of the following is likely to participate in ionic bonding?

Accepted Answer

A)   Li+
B)   H2O
C)   He
D)   C6H12O6E) All of the above
F) C) and D)

Question 7

How many different amino acids are used to build proteins?

Accepted Answer

A)   90
B)   20
C)   19
D)   4E) B) and C)
F) B) and D)

Question 8

The bonds within an individual water molecule and between separate water molecules explain the special properties of water.Describe the type of bond within individual water molecules and the type of bond between separate water molecules.Then,list two unique properties of water.

Accepted Answer

Individual water molecules are held toge...

Question 9

Hydrogen and oxygen atoms are held together within an individual water molecule by ________ bonds.

Accepted Answer

A)   hydrogen
B)   peptide
C)   polar covalent
D)   ionicE) All of the above
F) C) and D)

Question 10

If iodide ions (I-) were dissolved in water,they would be attracted to -) were dissolved in water,they would be attracted to   A)  A only. B)  B only. C)  C only. D)  A and C." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   A only.
B)   B only.
C)   C only.
D)   A and C.E) A) and B)
F) B) and C)

Question 11

Which of the following solutions has the highest concentration of free H+ ions?

Accepted Answer

A)   pH 1
B)   pH 4
C)   pH 7
D)   pH 14E) A) and D)
F) C) and D)

Question 12

Carbon's prominence in living systems can be explained by the fact that

Accepted Answer

A)   it forms weak reversible bonds.
B)   it bonds with up to three other atoms.
C)   carbon-based molecules can form long chains and rings.
D)   it does not form small molecules.E) A) and C)
F) A) and B)

Question 13

Ice floats on water because

Accepted Answer

A)   the crystal structure of ice is more regular than that seen in liquid water.
B)   the distance between water molecules in ice is greater than in liquid water.
C)   the cool temperature of ice reduces the extent of molecular motion relative to liquid water.
D)   when ice forms,the hydrogen bond in the water molecule becomes nonpolar; ice behaves like oil.E) B) and C)
F) A) and B)

Question 14

Laura's supervisor provides her with lipids,carbohydrates,proteins,and nucleic acids and asks her to determine their chemical components.Which of the following elements would she NOT expect to find in these items?

Accepted Answer

A)   phosphorus
B)   iron
C)   hydrogen
D)   nitrogenE) None of the above
F) A) and B)

Question 15

The bonds connecting the atoms in the molecule below are ________ bonds

Accepted Answer

A)   polar,hydrogen
B)   polar,covalent
C)   nonpolar,ionic
D)   nonpolar,covalentE) A) and D)
F) A) and C)

Question 16

The subatomic particles that possess a single negative charge,surround the nucleus,and are lost or gained by atoms called ions are the

Accepted Answer

A)   isotopes.
B)   protons.
C)   neutrons.
D)   electrons.E) B) and C)
F) None of the above

Question 17

During a study session,a Biology classmate holds up a bottle of water and mentions that there are both hydrogen bonds and covalent bonds found within the liquid.Explain your classmate's statement by describing the types of bonds that are found within your bottle of water.

Accepted Answer

Your classmate is correct in his or her ...

Question 18

The element ________ makes up the chemical backbone of most molecules on planet Earth.

Accepted Answer

The answer of The element ________ makes up the chemical...

Question 19

The pH scale measures the

Accepted Answer

A)   amount of water in a solution.
B)   likelihood that a solution will evaporate.
C)   concentration of hydrogen ions in a solution.
D)   number of atoms found within a molecule.E) A) and C)
F) B) and C)

Question 20

Molecules with an uneven distribution of charge are described as ________.

Accepted Answer

The answer of Molecules with an uneven distribution of charge...

Exam 3: Chemistry of Life

Which of the following is likely to participate in ionic bonding?

Correct AnswerverifiedShow Answer

Molecules with an uneven distribution of charge are described as ________.

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The subatomic particles that possess a single negative charge,surround the nucleus,and are lost or gained by atoms called ions are the

Correct AnswerverifiedShow Answer

The bonds within an individual water molecule and between separate water molecules explain the special properties of water.Describe the type of bond within individual water molecules and the type of bond between separate water molecules.Then,list two unique properties of water.

Correct AnswerverifiedIndividual water molecules are held toge...View AnswerShow Answer

Laura's supervisor provides her with lipids,carbohydrates,proteins,and nucleic acids and asks her to determine their chemical components.Which of the following elements would she NOT expect to find in these items?

Correct AnswerverifiedShow Answer

Hydrogen and oxygen atoms are held together within an individual water molecule by ________ bonds.

Correct AnswerverifiedShow Answer

Ice floats on water because

Correct AnswerverifiedShow Answer

The pH scale measures the

Correct AnswerverifiedShow Answer

The bonds connecting the atoms in the molecule below are ________ bonds

Correct AnswerverifiedShow Answer

Using the figure below,contrast the abundance of nitrogen,oxygen,and carbon in Earth's atmosphere and the human body.Address the reason for the difference in the abundance of carbon.

Correct AnswerverifiedNitrogen is much more abundant in Earth'...View AnswerShow Answer

Monomers that can be commonly made from components in Earth's atmosphere are

Correct AnswerverifiedShow Answer

If iodide ions (I-) were dissolved in water,they would be attracted to

Correct AnswerverifiedShow Answer

During a study session,a Biology classmate holds up a bottle of water and mentions that there are both hydrogen bonds and covalent bonds found within the liquid.Explain your classmate's statement by describing the types of bonds that are found within your bottle of water.

Correct AnswerverifiedYour classmate is correct in his or her ...View AnswerShow Answer

Which of the following solutions has the highest concentration of free H+ ions?

Correct AnswerverifiedShow Answer

Carbon's prominence in living systems can be explained by the fact that

Correct AnswerverifiedShow Answer

The element ________ makes up the chemical backbone of most molecules on planet Earth.

Correct AnswerverifiedShow Answer

Which of the following statements is true of proteins,carbohydrates,and nucleic acids?

Correct AnswerverifiedShow Answer

One of the symptoms of kidney disease is the presence of proteins in a patient's urine.To quickly test for kidney disease using a urine sample,a doctor might add a chemical that causes a color change when

Correct AnswerverifiedShow Answer

How many different amino acids are used to build proteins?

Correct AnswerverifiedShow Answer

The number that represents neutrality on the pH scale is ________.

Correct AnswerverifiedShow Answer

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Individual water molecules are held toge...
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Nitrogen is much more abundant in Earth'...
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If iodide ions (I^-) were dissolved in water,they would be attracted to

Correct Answer
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Your classmate is correct in his or her ...
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Which of the following solutions has the highest concentration of free H⁺ ions?

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