Question 1

The actual mass of an atom is known as its

Accepted Answer

A)  atomic number.
B)  atomic weight.
C)  mass number.
D)  atomic mass unit.
E)  element number.F) B) and E)
G) D) and E)

Question 2

Which property of water helps keep body temperature stabilized?

Accepted Answer

A)  kinetic energy
B)  lubrication
C)  surface tension
D)  reactivity
E)  thermal inertiaF) A) and D)
G) A) and C)

Question 3

In an aqueous solution,sodium ions would move toward

Accepted Answer

A)  a negative terminal.
B)  a positive terminal.
C)  a pH terminal.
D)  an organic terminal.
E)  the bottom.F) A) and D)
G) B) and C)

Question 4

A shortage of cholesterol in the body could interfere with the formation of

Accepted Answer

A)  sex hormones.
B)  proteins.
C)  cytoplasm.
D)  glycogen.
E)  nucleic acids.F) B) and C)
G) A) and D)

Question 5

AMP + P →

Accepted Answer

A)  ADP.
B)  2ADP.
C)  DNA.
D)  ATP.
E)  adenine.F) D) and E)
G) A) and B)

Question 6

A dust particle floating on a water surface illustrates

Accepted Answer

A)  surface tension.
B)  chemical tension.
C)  static electricity.
D)  heat capacity.
E)  hydrophilic attraction.F) A) and C)
G) B) and C)

Question 7

Predict the reactants and the type of chemical reaction involved when muscle cells make and store glycogen.

Accepted Answer

A)  glucose and fructose; dehydration synthesis
B)  glucose and fructose; hydrolysis
C)  many glucose monomers; dehydration synthesis
D)  many glucose monomers; hydrolysis
E)  many starch monomers; hydrolysisF) A) and B)
G) A) and C)

Question 8

Which of the following is correct regarding enzymes?

Accepted Answer

A)  They are made of lipids.
B)  They slow down cellular reactions.
C)  They are organic catalysts and are made of proteins.
D)  They bind to the active site of substrates.
E)  They are released during cellular injury.F) A) and E)
G) A) and B)

Question 9

Substrate molecules bind to enzymes at the ________ sites.

Accepted Answer

A)  amino
B)  active
C)  carboxyl
D)  reactant
E)  neutralF) B) and C)
G) C) and D)

Question 10

The chemical behavior of an atom is determined by the

Accepted Answer

A)  number of protons.
B)  number of neutrons.
C)  outermost electron shell.
D)  size of the atom.
E)  mass of the nucleus.F) All of the above
G) A) and B)

Question 11

Justify why blood has a very narrow normal pH range.What happens if the blood pH gets too high or too low?

Accepted Answer

Homeostasis requires that the pH of body...

Question 12

The reaction N2 + 3 H2 ? 2 NH3 is an example of a(n)

Accepted Answer

A)  exchange reaction.
B)  decomposition reaction.
C)  synthesis reaction.
D)  enzyme reaction.
E)  metabolic reaction.F) None of the above
G) A) and E)

Question 13

Which of the following is a result of convoluted coiling and folding that grants protein its final three-dimensional shape?

Accepted Answer

A)  primary structure
B)  secondary structure
C)  tertiary structure
D)  quaternary structure
E)  pentagonalF) C) and D)
G) C) and E)

Question 14

What is the relationship between an atom and matter?

Accepted Answer

A)  An atom is the smallest stable unit of matter,and matter is anything that takes up space and has mass.
B)  An atom is the largest stable unit of matter,and matter is anything that takes up space and has mass.
C)  An atom is a particle with a negative electrical charge,and matter is mass within a gravitational field.
D)  An atom is a chemical substance made up of two or more different elements in a fixed proportion,and matter is a pure substance consisting only of atoms with the same atomic number.
E)  An atom is the smallest stable unit of matter,and matter is a pure substance consisting only of atoms with the same atomic number.F) C) and D)
G) A) and E)

Question 15

________ are short-chain fatty acids in which five of the carbon atoms are joined in a ring.

Accepted Answer

A)  Cholesterol
B)  Estrogen
C)  Testosterone
D)  Prostaglandins
E)  GlycolipidsF) A) and B)
G) A) and C)

Question 16

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

Accepted Answer

A)  sulfur
B)  sodium
C)  oxygen
D)  potassium
E)  carbonF) D) and E)
G) B) and D)

Question 17

In the reaction listed below,what coefficient needs to be added to balance the equation? 6 CO2 + 6 H2O ? C6H12O6 + ________ O2.

Accepted Answer

A)  2
B)  4
C)  6
D)  8
E)  10F) C) and D)
G) A) and E)

Question 18

When two monosaccharides undergo a dehydration synthesis,

Accepted Answer

A)  two new monosaccharides are formed.
B)  a disaccharide is formed.
C)  a polysaccharide is formed.
D)  a starch is formed.
E)  All of the answers are correct.F) None of the above
G) C) and E)

Question 19

List examples of representative lipids in the body.

Accepted Answer

Examples of lipids found in th...

Question 20

H2O is an example of a(n)

Accepted Answer

A)  ionic formula.
B)  glucose molecule.
C)  molecular formula.
D)  covalent formula.E) B) and C)
F) A) and B)

Exam 2: Chemical Level of Organization

A shortage of cholesterol in the body could interfere with the formation of

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The actual mass of an atom is known as its

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H2O is an example of a(n)

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In the reaction listed below,what coefficient needs to be added to balance the equation? 6 CO2 + 6 H2O ? C6H12O6 + ________ O2.

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________ are short-chain fatty acids in which five of the carbon atoms are joined in a ring.

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

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The reaction N2 + 3 H2 ? 2 NH3 is an example of a(n)

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In an aqueous solution,sodium ions would move toward

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Substrate molecules bind to enzymes at the ________ sites.

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Which property of water helps keep body temperature stabilized?

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What is the relationship between an atom and matter?

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AMP + P →

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The chemical behavior of an atom is determined by the

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When two monosaccharides undergo a dehydration synthesis,

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List examples of representative lipids in the body.

Correct AnswerverifiedExamples of lipids found in th...View AnswerShow Answer

Justify why blood has a very narrow normal pH range.What happens if the blood pH gets too high or too low?

Correct AnswerverifiedHomeostasis requires that the pH of body...View AnswerShow Answer

Which of the following is correct regarding enzymes?

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Which of the following is a result of convoluted coiling and folding that grants protein its final three-dimensional shape?

Correct AnswerverifiedShow Answer

A dust particle floating on a water surface illustrates

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Predict the reactants and the type of chemical reaction involved when muscle cells make and store glycogen.

Correct AnswerverifiedShow Answer

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H₂O is an example of a(n)

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In the reaction listed below,what coefficient needs to be added to balance the equation? 6 CO₂ + 6 H₂O ? C₆H₁₂O₆ + ________ O₂.

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The reaction N₂ + 3 H₂ ? 2 NH₃is an example of a(n)

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Examples of lipids found in th...
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Homeostasis requires that the pH of body...
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