Question Details

BIO 130 MODULE 2 CHECK YOUR UNDERSTANDING

1.	NAD carries __________ to the electron transport system.
a.    energy
b.    oxygen
c.    hydrogen-electrons
d.    water
Hint: Section 5.6
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3P:Describe how the proton pump mechanism generates ATP.
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2.	Enzymes are most directly involved with:
a.    metabolic processes.
b.    generative processes.
c.    responsive processes.
d.    control processes.
Hint: Section 5.2
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3M:Describe why enzymes work in some situations and not in others.
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3.	The direct intake of a liquid, such as oil, into a cell is called:
a.    osmosis.
b.    phagocytosis.
c.    induction.
d.    pinocytosis.
Hint: Section 4.7
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3A:State the controlled methods by which materials can be transported through a cell membrane.
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4.	The difference between chromatin material and chromosomes is:
a.    their structure.
b.    the kinds of atoms that they contain.
c.    where you find them.
d.    that one is a gas and the other is a liquid.
Hint: Section 4.6
SLO2:Differentiate between prokaryotic and eukaryotic cells.
LO2A:Identify the typical organelles associated with eukaryotic cells.
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5.	ATP contains __________ high-energy phosphate bond(s).
a.    one
b.    two
c.    three
d.    four
Hint:Section 5.6
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3O:Explain the importance of ATP.
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6.	The reason why an enzyme fits a specific substrate is due to its:
a.    inhibitor.
b.    three-dimensional shape.
c.    acid side chain.
d.    nuclear membrane.
Hint: Section 5.2
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3L:Relate the shape of an enzyme to its ability to help in chemical reaction.
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7.	A cell that is 98% water is placed in pure water. This cell will:
a.    shrink.
b.    swell.
c.    shrink and then swell.
d.    remain the same size.
Hint: Section 4.7
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3E:State what environmental factors are able to alter enzyme activity.
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8.	__________ is not a component of a cellular membrane.
a.    Cholesterol
b.    Nucleic acid
c.    Phospholipid
d.    Protein
Hint: Section 4.3
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3C:Classify the components and molecular parts of a typical cell membrane.
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9.	An outside source of energy (ATP) is required for:
a.    osmosis.
b.    diffusion.
c.    active transport.
d.    none of the choices apply.
Hint: Section 4.7
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3O:Explain the importance of ATP.
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10.	As the amount of substrate is increased in an enzyme-substrate reaction:
a.    the amount of enzyme also increases proportionally.
b.    enzymes work faster.
c.    the amount of product increases.
d.    enzymes become denatured faster.
Hint: Section 5.5
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3H:Describe what happens when an enzyme and a substrate combine.
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11.	Enzymatic competition results when:
a.    several substrates can combine with one enzyme.
b.    one enzyme can bring about the formation of several substrates.
c.    several types of enzymes can combine with a given substrate.
d.    one enzyme can produce several types of products.
Hint: Section 5.5
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3K:Describe enzymatic competition.
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12.	A cell that is 98% water is placed in a solution containing 3% salt. This cell is now __________ compared to its surroundings.
a.    isotonic
b.    hypertonic
c.    hypotonic
d.    hydrophilic
Hint: Section 4.7
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3E:State what environmental factors are able to alter enzyme activity.
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13.	Eukaryotic cells are found in the group known as the:
a.    fungi.
b.    plants.
c.    animals.
d.    all of the choices apply.
Hint: Section 4.1 and Section 4.8
SLO2:Differentiate between prokaryotic and eukaryotic cells.
LO2B:Examine the differences in organelles found in prokaryotic and eukaryotic cells.
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14.	When a protein is denatured, the turnover number will:
a.    increase.
b.    remain the same.
c.    decrease.
d.    change with the pH.
Hint: Section 5.4
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3E:State what environmental factors are able to alter enzyme activity.
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15.	The surface area of a cell is important because:
a.    the surface area limits the amount of molecular exchange that can take place between the cell and its surroundings.
b.    a small surface area allows the cell to protect itself from foreign organisms.
c.    a large surface area makes the cell more fragile.
d.    the surface area determines the genetic capabilities of the cell.
Hint: Section 4.2
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3A:State the controlled methods by which materials can be transported through a cell membrane.
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16.	NAD is a(n):
a.    enzyme.
b.    electron carrier.
c.    product of photosynthesis.
d.    oxygen carrier.
Hint: Section 5.6
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3P:Describe how the proton pump mechanism generates ATP.
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17.	As the size of a cell increases:
a.    the surface area increases faster than the volume.
b.    the surface area and the volume increase at the same rate.
c.    the volume increases faster than the surface area.
d.    there is not relationship between surface area and volume.
Hint: Section 4.2
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3D:Explain why cells are small.
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18.	The number of molecules with which an enzyme reacts is the:
a.    end product.
b.    optimum.
c.    substrate.
d.    turnover rate.
Hint: Section 5.2 and Section 5.4
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3F:Describe to which group of organic molecules enzymes belong.
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19.	A method of controlling the synthesis rate of molecules is called:
a.    negative-feedback control.
b.    tertiary control.
c.    enzyme-inhibition control.
d.    depression-feedback control.
Hint: Section 5.6
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3E:State what environmental factors are able to alter enzyme activity.
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20.	The induced fit hypothesis states that:
a.    a single enzyme can adjust its shape to fit with several types of substrate.
b.    a substrate will adjust its shape to fit the shape of the enzyme.
c.    an enzyme can adjust itself to a substrate as they come together.
d.    the enzyme and substrate have no set shape until they unite.
Hint: Section 5.2
SLO3:Evaluate the anatomy and functions of cells and enzymes.
LO3H:Describe what happens when an enzyme and a substrate combine.
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