Question 1

The cytoplasm is not considered a cellular organelle.

Accepted Answer

A) True 
 B)False  True

Question 2

What components make up the ribosomes?

Accepted Answer

A)  proteins and rRNA
B)  proteins and DNA,
C)  lipids and rRNA
D)  carbohydrates and rRNA.
E)  proteins and DNAF) C) and D)
G) None of the above

Question 3

What is the function of cholesterol in the plasma membrane?

Accepted Answer

A)  cell marker
B)  receptor
C)  support
D)  channel
E)  enzymeF) A) and E)
G) B) and C)

Question 4

During exocytosis,the phospholipids present in the vesicle membrane will end up in the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 5

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

Accepted Answer

A) True 
 B)False  False

Question 6

Only glucose can be used as an energy source in the human body.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is not a function of the plasma membrane?

Accepted Answer

A)  determines which substances enter and leave the cell
B)  serves as a boundary between the cell and its environment
C)  contains receptor sites which determine how the cell interacts with its environment
D)  contains the genetic information
E)  marks the cell as belonging to a particular individualF) C) and D)
G) A) and E)

Question 8

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

Accepted Answer

A)  nucleus
B)  nucleolus
C)  nuclear envelope
D)  nucleoplasm
E)  endoplasmic reticulumF) C) and D)
G) D) and E)

Question 9

What is the main function of the ribosomes in the cell?

Accepted Answer

A)  to synthesize proteins
B)  to synthesize DNA
C)  to breakdown proteins into individual amino acids
D)  to form the nuclear envelope
E)  to provide strength and structural support for the cell membraneF) C) and D)
G) A) and C)

Question 10

The sum of all of the chemical reactions that occur in a cell collectively are called

Accepted Answer

A)  respiration.
B)  anabolism.
C)  photosynthesis.
D)  metabolism.
E)  reaction summary.F) D) and E)
G) B) and E)

Question 11

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

Accepted Answer

A)  diffusion
B)  facilitated transport
C)  active transport
D)  osmosis
E)  crenation.F) A) and D)
G) C) and D)

Question 12

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

Accepted Answer

A)  exocytosis
B)  phagocytosis
C)  pinocytosis
D)  receptor-mediated endocytosis
E)  endocytosisF) A) and E)
G) B) and E) A

Question 13

How large is a nuclear pore in the nuclear envelope?

Accepted Answer

A)  larger than a ribosome
B)  larger than the Golgi apparatus
C)  larger than the endoplasmic reticulum
D)  smaller than a ribosome
E)  smaller than a proteinF) A) and D)
G) A) and C)

Question 14

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  fiveF) All of the above
G) A) and C)

Question 15

Why is glycolysis believed to have evolved early in the history of life?

Accepted Answer

A)  It breaks down sugar.
B)  It produces energy.
C)  It is present in most every type of cell.
D)  It does not require oxygen.
E)  It splits a 6-carbon molecule into two 3-carbon molecules.F) C) and D)
G) B) and E)

Question 16

Brad placed a drop of blood in some distilled water.What happened in the red blood cells?

Accepted Answer

A)  The cells shrunk.
B)  The cells burst.
C)  The cells did not change.
D)  The cells divided into 2 identical cells.
E)  The cellular metabolism increased in ratE.F) A) and B)
G) D) and E)

Question 17

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

Accepted Answer

A)  Protists
B)  Protoctista
C)  Archaea
D)  Archetista
E)  EukaryaF) C) and E)
G) D) and E)

Question 18

Explain the functions of adhesion junctions,gap junctions,and tight junctions in human cells.

Accepted Answer

Adhesion junctions serve to mechanically...

Question 19

What cellular organelle is especially abundant in phagocytic white blood cells?

Accepted Answer

A)  nuclei
B)  nucleoli
C)  Golgi apparati
D)  lysosomes
E)  ribosomesF) A) and C)
G) A) and D)

Question 20

Fermentation produces more ATP than does aerobic respiration.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

The cytoplasm is not considered a cellular organelle.

Correct AnswerverifiedTrue

What components make up the ribosomes?

Correct AnswerverifiedShow Answer

What is the function of cholesterol in the plasma membrane?

Correct AnswerverifiedShow Answer

During exocytosis,the phospholipids present in the vesicle membrane will end up in the plasma membrane.

Correct AnswerverifiedShow Answer

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

Correct AnswerverifiedFalse

Only glucose can be used as an energy source in the human body.

Correct AnswerverifiedShow Answer

Which of the following is not a function of the plasma membrane?

Correct AnswerverifiedShow Answer

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

Correct AnswerverifiedShow Answer

What is the main function of the ribosomes in the cell?

Correct AnswerverifiedShow Answer

The sum of all of the chemical reactions that occur in a cell collectively are called

Correct AnswerverifiedShow Answer

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

Correct AnswerverifiedShow Answer

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

Correct AnswerverifiedA

How large is a nuclear pore in the nuclear envelope?

Correct AnswerverifiedShow Answer

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

Correct AnswerverifiedShow Answer

Why is glycolysis believed to have evolved early in the history of life?

Correct AnswerverifiedShow Answer

Brad placed a drop of blood in some distilled water.What happened in the red blood cells?

Correct AnswerverifiedShow Answer

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

Correct AnswerverifiedShow Answer

Explain the functions of adhesion junctions,gap junctions,and tight junctions in human cells.

Correct AnswerverifiedAdhesion junctions serve to mechanically...View AnswerShow Answer

What cellular organelle is especially abundant in phagocytic white blood cells?

Correct AnswerverifiedShow Answer

Fermentation produces more ATP than does aerobic respiration.

Correct AnswerverifiedShow Answer

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False

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A

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Adhesion junctions serve to mechanically...
View Answer

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