Question 1

Continuous breakdown and replacement of cellular molecules is termed

Accepted Answer

A)   metabolic turnover.
B)   metabolism.
C)   anabolic turnover.
D)   catabolic turnover.
E)   both A and C

Question 2

What role do buffer systems play in the human body?

Accepted Answer

Buffer systems help maintain p...

Question 3

The alpha- helix and pleated sheet are examples of _____protein structure.

Accepted Answer

A)   tertiary
B)   pentanary
C)   primary
D)   quaternary
E)   secondary

Question 4

Most of the fat found in the human body is in the form of

Accepted Answer

A)   prostaglandins.
B)   cholesterol.
C)   monoglycerides.
D)   phospholipids.
E)   triglycerides.

Question 5

The smallest stable units of matter are

Accepted Answer

A)   electrons.
B)   protons.
C)   molecules.
D)   atoms.
E)   neutrons.

Question 6

By weight, which element is the most plentiful in the human body?

Accepted Answer

A)   carbon
B)   oxygen
C)   potassium
D)   sulfur
E)   sodium

Question 7

An)________ is a covalent bond that stores an unusually large amount of energy.

Accepted Answer

The answer of An)________ is a covalent bond that stores...

Question 8

When electrons are transferred from one atom to another, and the two atoms unite as a result of the opposite charges,

Accepted Answer

A)   a molecule is formed.
B)   a hydrogen bond is formed.
C)   an ion is formed.
D)   an ionic bond is formed.
E)   a covalent bond is formed.

Question 9

In an aqueous solution, cations are attracted toward

Accepted Answer

A)   hydrogen ions.
B)   buffers.
C)   anions.
D)   water.
E)   salt.

Question 10

In water, fatty acids tend to form tiny droplets with hydrophobic tails buried inside called___________
.

Accepted Answer

The answer of In water, fatty acids tend to form...

Question 11

The__________ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter.

Accepted Answer

The answer of The__________ of a solution is the negative...

Question 12

Magnesium atoms have two electrons in the outermost shell and chlorine atoms have seven. The compound magnesium chloride would contain

Accepted Answer

A)   1 magnesium and 2 chlorine.
B)   2 magnesium and 7 chlorine.
C)   1 magnesium and 1 chlorine.
D)   2 magnesium and 1 chlorine.
E)   impossible to tell without more information

Question 13

Carbohydrates, lipids, and proteins are classified as

Accepted Answer

A)   inorganic molecules.
B)   acids.
C)   salts.
D)   bases.
E)   organic molecules.

Question 14

Ions with a negative charge are called ____

Accepted Answer

The answer of Ions with a negative charge are called...

Question 15

The average time between synthesis and breakdown is known as the _____ time.

Accepted Answer

A)   anabolism
B)   catabolism
C)   turnover
D)   metabolism
E)   specificity

Question 16

Nonpolar organic molecules are good examples of

Accepted Answer

A)   electrolytes.
B)   molecules that will dissociate when placed into water.
C)   hydrophobic compounds.
D)   solutes.
E)   hydrophilic compounds.

Question 17

Identify the product formed from the phosphorylation of ADP.

Accepted Answer

A)   adenosine triphosphate
B)   ribose
C)   adenine
D)   deoxyribonucleic acid
E)   adenosine diphosphate

Question 18

In the process of ________ a phosphate group is transferred to a molecule.

Accepted Answer

The answer of In the process of ________ a phosphate...

Question 19

If a pair of electrons is unequally shared between two atoms, an)  ____ occurs.

Accepted Answer

A)   hydrogen bond
B)   double covalent bond
C)   single covalent bond
D)   triple covalent bond
E)   polar covalent bond

Question 20

Oxygen is required in biological systems for

Accepted Answer

A)   chemical messengers.
B)   serving as catalysts.
C)   storage of energy.
D)   cellular metabolism.
E)   serving as structural components of bone.

Exam 2: The Chemical Level of Organization

If a pair of electrons is unequally shared between two atoms, an) ____ occurs.

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What role do buffer systems play in the human body?

Correct AnswerverifiedBuffer systems help maintain p...View AnswerShow Answer

In an aqueous solution, cations are attracted toward

Correct AnswerverifiedShow Answer

The average time between synthesis and breakdown is known as the _____ time.

Correct AnswerverifiedShow Answer

An)________ is a covalent bond that stores an unusually large amount of energy.

Correct AnswerverifiedShow Answer

Nonpolar organic molecules are good examples of

Correct AnswerverifiedShow Answer

Most of the fat found in the human body is in the form of

Correct AnswerverifiedShow Answer

Magnesium atoms have two electrons in the outermost shell and chlorine atoms have seven. The compound magnesium chloride would contain

Correct AnswerverifiedShow Answer

When electrons are transferred from one atom to another, and the two atoms unite as a result of the opposite charges,

Correct AnswerverifiedShow Answer

Identify the product formed from the phosphorylation of ADP.

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By weight, which element is the most plentiful in the human body?

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In water, fatty acids tend to form tiny droplets with hydrophobic tails buried inside called___________ .

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Ions with a negative charge are called ____

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In the process of ________ a phosphate group is transferred to a molecule.

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Oxygen is required in biological systems for

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Carbohydrates, lipids, and proteins are classified as

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The alpha- helix and pleated sheet are examples of _____protein structure.

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The__________ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter.

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Continuous breakdown and replacement of cellular molecules is termed

Correct AnswerverifiedShow Answer

The smallest stable units of matter are

Correct AnswerverifiedShow Answer

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Buffer systems help maintain p...
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