Question 1

The diameter of a red blood cell is a little less than 1 $\mu$m.

Accepted Answer

A) True 
 B)False

Question 2

The pigment melanin is a(n)

Accepted Answer

A)  membrane-bound organelle.
B)  non-membrane-bound organelle.
C)  inclusion.
D)  nutrient.
E)  triglyceride.

Question 3

Removal of old organelles is via a process called

Accepted Answer

A)  pinocytosis.
B)  autophagy.
C)  autolysis.
D)  filtration.
E)  vascularization.

Question 4

The replication of a DNA molecule during interphase occurs during the

Accepted Answer

A)  first "gap" phase.
B)  S phase.
C)  second "gap" phase.
D)  generation "gap" phase.
E)  metaphase.

Question 5

The E site of a ribosome is where

Accepted Answer

A)  new amino acids enter the ribosome.
B)  the polypeptide elongates.
C)  the tRNA exits the ribosome.

Question 6

The _________ are responsible for synthesizing most of a human body cell's ATP.

Accepted Answer

A)  lysosomes
B)  microfilaments
C)  nucleoli
D)  ribosomes
E)  mitochondria

Question 7

The digestion of a cell by its own enzymes is called _______________.

Accepted Answer

The answer of The digestion of a cell by its...

Question 8

_______________ transport is required to move a substance across a membrane against a concentration gradient.

Accepted Answer

The answer of _______________ transport is required to move a...

Question 9

Proteins that assist the movement of a substance across the membrane are called _________ proteins.

Accepted Answer

A)  catalytic
B)  cytoskeleton
C)  transport
D)  identification
E)  intercellular attachment

Question 10

Which of the following serve to increase the surface area of a cell for absorption and secretion

Accepted Answer

A)  Flagella
B)  Microvilli
C)  Cilia
D)  Cilia and flagella
E)  Cilia and microvilli

Question 11

The last part of interphase is called

Accepted Answer

A)  the first "gap" phase.
B)  the second "gap" phase.
C)  telophase.
D)  the S phase.
E)  anaphase.

Question 12

The sodium-potassium pump is continually active while the cell is at a stable resting membrane potential.

Accepted Answer

A) True 
 B)False

Question 13

The two identical cells that arise from mitosis are called ____________ cells.

Accepted Answer

The answer of The two identical cells that arise from...

Question 14

Which choice describes the activation steps of a G protein-coupled receptor properly (and in correct order)

Accepted Answer

A)  Ligand binds to receptor,G protein activated,effector protein activated,second messenger made available
B)  Ligand binds to receptor,second messenger activated,G protein turned on,protein kinase activated
C)  Protein kinase activated,ion channel opened,ions enter and activate second messenger,G protein turned on
D)  Ion channel opened,G protein activated,second messenger synthesized,phosphatase ends signal

Question 15

Cytokinesis usually begins before ________ ends.

Accepted Answer

A)  prophase
B)  interphase
C)  metaphase
D)  anaphase
E)  telophase

Question 16

If a transport protein moves two solutes across a membrane in opposite directions,the protein is called a countertransporter or _________.

Accepted Answer

antiporter or
antiport or
an...

Question 17

Everything packaged by the Golgi apparatus for secretion leaves the cell within a vesicle.

Accepted Answer

A) True 
 B)False

Question 18

Which does not occur during the G2phase

Accepted Answer

A)  Centriole replication is completed.
B)  Organelle production continues.
C)  Enzymes needed for cell division are synthesized.
D)  Each DNA molecule replicates.
E)  No exceptions;all of these occur during the G2phase.

Question 19

During osmosis,water moves toward the solution with the _________ solute concentration.

Accepted Answer

A)  greater
B)  lesser

Question 20

Pinocytosis is the process in which the cell

Accepted Answer

A)  internalizes ("drinks") a droplet of interstitial fluid.
B)  internalizes ("eats") a large solid particle.
C)  splits ("pinches") off a small part of itself to secrete into the extracellular space.
D)  pumps small solutes against their concentration gradient and out of the cell.

Exam 4: Biology of the Cell

The replication of a DNA molecule during interphase occurs during the

Correct AnswerverifiedShow Answer

The diameter of a red blood cell is a little less than 1 μ\muμ m.

Correct AnswerverifiedShow Answer

Which does not occur during the G2phase

Correct AnswerverifiedShow Answer

Which of the following serve to increase the surface area of a cell for absorption and secretion

Correct AnswerverifiedShow Answer

Cytokinesis usually begins before ________ ends.

Correct AnswerverifiedShow Answer

If a transport protein moves two solutes across a membrane in opposite directions,the protein is called a countertransporter or _________.

Correct Answerverifiedantiporter or antiport or an...View AnswerShow Answer

Which choice describes the activation steps of a G protein-coupled receptor properly (and in correct order)

Correct AnswerverifiedShow Answer

The last part of interphase is called

Correct AnswerverifiedShow Answer

Pinocytosis is the process in which the cell

Correct AnswerverifiedShow Answer

The sodium-potassium pump is continually active while the cell is at a stable resting membrane potential.

Correct AnswerverifiedShow Answer

Everything packaged by the Golgi apparatus for secretion leaves the cell within a vesicle.

Correct AnswerverifiedShow Answer

_______________ transport is required to move a substance across a membrane against a concentration gradient.

Correct AnswerverifiedShow Answer

The two identical cells that arise from mitosis are called ____________ cells.

Correct AnswerverifiedShow Answer

Proteins that assist the movement of a substance across the membrane are called _________ proteins.

Correct AnswerverifiedShow Answer

The _________ are responsible for synthesizing most of a human body cell's ATP.

Correct AnswerverifiedShow Answer

Removal of old organelles is via a process called

Correct AnswerverifiedShow Answer

The E site of a ribosome is where

Correct AnswerverifiedShow Answer

During osmosis,water moves toward the solution with the _________ solute concentration.

Correct AnswerverifiedShow Answer

The pigment melanin is a(n)

Correct AnswerverifiedShow Answer

The digestion of a cell by its own enzymes is called _______________.

Correct AnswerverifiedShow Answer

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The diameter of a red blood cell is a little less than 1 $\mu$ m.

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Which does not occur during the G₂phase

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antiporter or
antiport or
an...
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