Question 1

Under anaerobic conditions,the process of _____ provides energy for the cell.

Accepted Answer

A)   oxidative phosphorylation
B)   glycolysis
C)   lactolysis
D)   passive transportE) All of the above
F) A) and D)

Question 2

How is the transport of glucose from the blood to the cell accomplished?

Accepted Answer

A)   By active-mediated transport (active transport) 
B)   By active diffusion
C)   By passive osmosis
D)   By passive-mediated transport (facilitated diffusion) E) A) and B)
F) C) and D)

Question 3

Which cells,if any,lose their ability to replicate and divide?

Accepted Answer

A)   None,all cells have the ability to replicate and divide.
B)   Cells of the lung and intestinal tract cannot replicate and divide.
C)   Cells of the skin cannot replicate and divide.
D)   Cells of the lens of the eye and skeletal muscle cannot replicate and divide.E) B) and C)
F) C) and D)

Question 4

Lysosomes remain fully active by maintaining an acid pH created by pumping hydrogen ions into their interiors.

Accepted Answer

A) True 
 B)False  True

Question 5

A patient who has diarrhea receives a 3% saline solution intravenously to replace the sodium and chloride lost in the stool.What effect will this fluid replacement have on cells?

Accepted Answer

A)   Cells will become hydrated.
B)   Cells will swell or burst.
C)   Cells will shrink.
D)   Cells will divide.E) C) and D)
F) B) and D)

Question 6

Phagocytosis is an example of exocytosis.

Accepted Answer

A) True 
 B)False

Question 7

MATCHING
Match the structure with its function.(Answers A through E may be used more than once. ) 
-Provides energy to digest proteins into amino acids

Accepted Answer

A)  Endoplasmic reticulum
B)  Ribosome
C)  Golgi complex
D)  Secretory vesicle
E)  LysosomesF) A) and E)
G) B) and D) E

Question 8

During which phase of the cell cycle is DNA synthesized?

Accepted Answer

A)   G1
B)   S
C)   G2D) None of the above
E) A) and B)

Question 9

In cirrhosis,how does cholesterol alter the fluidity of the plasma membrane of erythrocytes?

Accepted Answer

A)   Cholesterol decreases the membrane fluidity of the erythrocyte,which reduces its ability to carry oxygen.
B)   Cholesterol decreases the membrane fluidity of erythrocytes,which reduces its ability to carry hemoglobin.
C)   Cholesterol increases the membrane fluidity of erythrocytes,which allows binding of excess glucose.
D)   Cholesterol increases the membrane fluidity of erythrocytes,which prolongs it life span beyond 120 days.E) None of the above
F) A) and D)

Question 10

Why is potassium able to diffuse easily in and out of cells?

Accepted Answer

A)   Because potassium has a greater concentration in the intracellular fluid (ICF) 
B)   Because sodium has a greater concentration in the extracellular fluid (ECF) 
C)   Because the resting plasma membrane is more permeable to potassium
D)   Because there is an excess of anions inside the cellE) All of the above
F) B) and D)

Question 11

Match the structure with its function.(Answers A through D may be used more than once. ) 
-Movement of water

Accepted Answer

A)  Passive-mediated transport
B)  Active-mediated transport
C)  Osmosis
D)  DiffusionE) A) and B)
F) None of the above

Question 12

If cells are deprived of communication from extracellular chemical messengers,most cells experience apoptosis.

Accepted Answer

A) True 
 B)False

Question 13

Which mode of chemical signaling uses blood to transport communication to cells some distance away?

Accepted Answer

A)   Paracrine signaling
B)   Autocrine signaling
C)   Neurotransmitter signaling
D)   Hormone signalingE) C) and D)
F) B) and C)

Question 14

What prevents water-soluble molecules from entering cells across the plasma membrane?

Accepted Answer

A)   Carbohydrate chains
B)   Glycoprotein channels
C)   Membrane channel proteins
D)   Phospholipid bilayerE) A) and C)
F) A) and B)

Question 15

Lipids and proteins are the major components of the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 16

What is the sequence of steps in the development of a digestive enzyme by the pancreas cells from the initial transcription to the release from the cell?

Accepted Answer

A)   The enzyme is transcribed from DNA by RNA in the nucleus,proceeds to the ribosome for synthesis,and is transported in a secretory vesicle to the cell membrane.
B)   The enzyme is transcribed from RNA by DNA in the nucleus,proceeds to the lysosome for synthesis,and is transported in a encapsulated membrane to the cell membrane.
C)   The enzyme is transcribed by the mitochondria in the nucleus,proceeds to the ribosome for synthesis,and is transported in a cytoskeleton to the cell membrane.
D)   The enzyme is transcribed from DNA by RNA in the nucleus,proceeds to the Golgi complex for synthesis,and is transported in a cytosol to the cell membrane.E) B) and C)
F) All of the above

Question 17

How is passive transport described?

Accepted Answer

A)   It is driven by osmosis,filtration,and diffusion.
B)   It involves receptors that can bind with substances being transported.
C)   It is capable of transporting macromolecules.
D)   It requires energy generated by the cell.E) A) and D)
F) A) and C)

Question 18

What occurs during exocytosis?

Accepted Answer

A)   Macromolecules can be secreted across eukaryotic cell membranes.
B)   All substances are secreted into the cellular matrix.
C)   No repairs in the plasma membrane can take place.
D)   Solute molecules flow freely into and out of the cell.E) A) and B)
F) B) and D)

Question 19

Most of a cell's genetic information is contained in the:

Accepted Answer

A)   mitochondriA.
B)   ribosome.
C)   nucleolus.
D)   nucleus.E) All of the above
F) B) and D) C

Question 20

Which component of the cell produces hydrogen peroxide (H2O2) by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction?

Accepted Answer

A)   Lysosomes
B)   Peroxisome
C)   Ribosomes
D)   OxyhydrosomesE) A) and D)
F) A) and C)

Exam 1: Cellular Biology

Under anaerobic conditions,the process of _____ provides energy for the cell.

Correct AnswerverifiedShow Answer

How is the transport of glucose from the blood to the cell accomplished?

Correct AnswerverifiedShow Answer

Which cells,if any,lose their ability to replicate and divide?

Correct AnswerverifiedShow Answer

Lysosomes remain fully active by maintaining an acid pH created by pumping hydrogen ions into their interiors.

Correct AnswerverifiedTrue

A patient who has diarrhea receives a 3% saline solution intravenously to replace the sodium and chloride lost in the stool.What effect will this fluid replacement have on cells?

Correct AnswerverifiedShow Answer

Phagocytosis is an example of exocytosis.

Correct AnswerverifiedShow Answer

MATCHING Match the structure with its function.(Answers A through E may be used more than once. ) -Provides energy to digest proteins into amino acids

Correct AnswerverifiedE

During which phase of the cell cycle is DNA synthesized?

Correct AnswerverifiedShow Answer

In cirrhosis,how does cholesterol alter the fluidity of the plasma membrane of erythrocytes?

Correct AnswerverifiedShow Answer

Why is potassium able to diffuse easily in and out of cells?

Correct AnswerverifiedShow Answer

Match the structure with its function.(Answers A through D may be used more than once. ) -Movement of water

Correct AnswerverifiedShow Answer

If cells are deprived of communication from extracellular chemical messengers,most cells experience apoptosis.

Correct AnswerverifiedShow Answer

Which mode of chemical signaling uses blood to transport communication to cells some distance away?

Correct AnswerverifiedShow Answer

What prevents water-soluble molecules from entering cells across the plasma membrane?

Correct AnswerverifiedShow Answer

Lipids and proteins are the major components of the plasma membrane.

Correct AnswerverifiedShow Answer

What is the sequence of steps in the development of a digestive enzyme by the pancreas cells from the initial transcription to the release from the cell?

Correct AnswerverifiedShow Answer

How is passive transport described?

Correct AnswerverifiedShow Answer

What occurs during exocytosis?

Correct AnswerverifiedShow Answer

Most of a cell's genetic information is contained in the:

Correct AnswerverifiedC

Which component of the cell produces hydrogen peroxide (H2O2) by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction?

Correct AnswerverifiedShow Answer

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True

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E

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C

Which component of the cell produces hydrogen peroxide (H₂O₂) by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction?

Correct Answer
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