Question 1

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) B) and E)
G) A) and B)

Question 2

The grainy-looking substance inside the nucleus is composed of

Accepted Answer

A)   phospholipids.
B)   DNA and proteins.
C)   nucleoplasm.
D)   ribosomes.
E)   mitochondria.F) C) and E)
G) B) and E)

Question 3

If a cube has sides of 3 nm,what are the surface area and the volume of the cube?

Accepted Answer

A)   24 nm2, 8 nm3
B)   38 nm2, 16 nm3
C)   54 nm2, 27 nm3
D)   64 nm2, 24 nm3
E)   18 nm2, 6 nm3F) A) and D)
G) A) and E)

Question 4

If the mitochondrion is the result of endosymbiosis,what membrane of the mitochondrion represents the engulfing vesicle?

Accepted Answer

A)   the outer mitochondrial membrane
B)   vacuole
C)   cristae
D)   matrix
E)   granaF) A) and B)
G) A) and C)

Question 5

What is the maximum number of ATP molecules produced during aerobic respiration?

Accepted Answer

A)   38
B)   36
C)   32
D)   2
E)   4F) C) and D)
G) A) and D)

Question 6

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

Accepted Answer

A)   hypertonic
B)   isotonic
C)   hypotonic
D)   pretonic
E)   osmotonicF) C) and D)
G) A) and C)

Question 7

Archaea are considered the evolutionary precursors to eukaryotic cells.

Accepted Answer

A) True 
 B)False

Question 8

In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the ________ heads are facing the outside environment and the ________ tails are facing the interior of the membrane.

Accepted Answer

A)   hydrophobic, hydrophilic
B)   hydrophilic, hydrophobic
C)   autotrophic, heterotrophic
D)   heterotrophic, autotrophic
E)   ectothermic, endothermicF) D) and E)
G) A) and C)

Question 9

A short chain of sugar attached to a protein molecule on the plasma membrane is called

Accepted Answer

A)   a protomembrane.
B)   a protosugar.
C)   a glycocalyx.
D)   a glycolipid.
E)   a glycoprotein.F) B) and D)
G) D) and E)

Question 10

All of the following are possible origins of cell organelles in eukaryotes EXCEPT

Accepted Answer

A)   invagination of the plasma membrane to form endoplasmic reticulum.
B)   incorporation of engulfed heterotrophic bacteria to form mitochondria.
C)   incorporation of engulfed autotrophic cyanobacteria to form chloroplasts.
D)   a symbiotic relationship between a host cell and a prokaryote that was taken up but not destroyed.
E)   groups of prokaryotic cells begin to live in a small group sharing products of metabolism.F) B) and E)
G) A) and B)

Question 11

In developing embryos such as a chicken,what restores the amount of surface area needed for exchange requirements?

Accepted Answer

A)   respiration
B)   catabolism
C)   anabolism
D)   cell division
E)   assimilationF) A) and E)
G) C) and D)

Question 12

List,in order,the stages of aerobic cellular respiration.

Accepted Answer

Cellular respiration begins with glycoly...

Question 13

In a metabolic pathway,substrate Z is broken down to form products 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) B) and C)
G) B) and D)

Question 14

If a cell lacked ribosomes,it would not be able to

Accepted Answer

A)   form a spindle apparatus.
B)   synthesize proteins.
C)   respire oxidatively.
D)   break down fats.
E)   produce ATP.F) C) and D)
G) A) and E)

Question 15

Which model currently describes the structure of the plasma membrane?

Accepted Answer

A)   endosymbiont model
B)   fluid-mosaic model
C)   plasmagel-plasmasol model
D)   lock and key model
E)   induced-fit modelF) B) and C)
G) B) and E)

Question 16

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

Accepted Answer

A) True 
 B)False

Question 17

Which type of junctions must there be between cells to form a barrier?

Accepted Answer

A)   adhesion junctions
B)   gap junctions
C)   tight junctions
D)   channel junctions
E)   free junctionsF) A) and B)
G) B) and E)

Question 18

If you could remove all the phosphate in the cell,what would happen to the ATP cycle?

Accepted Answer

A)   It would stop when all the ATP had been converted into ADP.
B)   It would stop when all the ADP had been converted into ATP.
C)   It would cycle faster because the lack of phosphate would drive the cycle.
D)   It would cycle faster because of the buildup of ATP.
E)   It would not affect the ATP cycle.F) B) and E)
G) B) and D)

Question 19

Biologists classify cells into two broad categories- animals and plants.

Accepted Answer

A) True 
 B)False

Question 20

What do the SER and RER have in common?

Accepted Answer

A)   the presence of ribosomes
B)   the formation of transport vesicles
C)   the synthesis of phospholipids
D)   the synthesis of proteins
E)   the processing and modification of proteinsF) A) and B)
G) D) and E)

Exam 3: Cell Structure and Function

In a metabolic pathway,substrate Z is broken down to form products 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

What do the SER and RER have in common?

Correct AnswerverifiedShow Answer

List,in order,the stages of aerobic cellular respiration.

Correct AnswerverifiedCellular respiration begins with glycoly...View AnswerShow Answer

If the mitochondrion is the result of endosymbiosis,what membrane of the mitochondrion represents the engulfing vesicle?

Correct AnswerverifiedShow Answer

A short chain of sugar attached to a protein molecule on the plasma membrane is called

Correct AnswerverifiedShow Answer

In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the ________ heads are facing the outside environment and the ________ tails are facing the interior of the membrane.

Correct AnswerverifiedShow Answer

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

Correct AnswerverifiedShow Answer

Which model currently describes the structure of the plasma membrane?

Correct AnswerverifiedShow Answer

If a cube has sides of 3 nm,what are the surface area and the volume of the cube?

Correct AnswerverifiedShow Answer

The grainy-looking substance inside the nucleus is composed of

Correct AnswerverifiedShow Answer

Which type of junctions must there be between cells to form a barrier?

Correct AnswerverifiedShow Answer

If you could remove all the phosphate in the cell,what would happen to the ATP cycle?

Correct AnswerverifiedShow Answer

In developing embryos such as a chicken,what restores the amount of surface area needed for exchange requirements?

Correct AnswerverifiedShow Answer

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Archaea are considered the evolutionary precursors to eukaryotic cells.

Correct AnswerverifiedShow Answer

What is the maximum number of ATP molecules produced during aerobic respiration?

Correct AnswerverifiedShow Answer

If a cell lacked ribosomes,it would not be able to

Correct AnswerverifiedShow Answer

Biologists classify cells into two broad categories- animals and plants.

Correct AnswerverifiedShow Answer

All of the following are possible origins of cell organelles in eukaryotes EXCEPT

Correct AnswerverifiedShow Answer

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Cellular respiration begins with glycoly...
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In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the heads are facing the outside environment and the tails are facing the interior of the membrane.

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