Question 1

Chromosomes begin migrating towards poles of the cell during

Accepted Answer

A)  anaphase.
B)  interphase.
C)  telophase.
D)  metaphase.
E)  prophase.F) A) and E)
G) A) and D)

Question 2

Which of the following correctly matches a nuclear structure with its function?

Accepted Answer

A)  nuclear pores - allow molecules to move between the nucleus and cytoplasm.
B)  chromatin - fluid portion of the nucleus
C)  chromosomes - contains RNA and histones
D)  nuclear envelope - contains the nucleolar organizer
E)  nucleolus - DNA synthesisF) A) and C)
G) A) and D)

Question 3

There is a concentration differernce for Na+ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H+.This secondary active transport in the intestine works by the following.(Check all that apply.)

Accepted Answer

A)  active transport of sodium out of the cell 
B)  active transport of sodium into the cell 
C)  carrier mediated transport of glucose into the cells 
D)   carrier mediated transport of sodium into the cell 
E)  active transport of potassium out of the cellF) D) and E)
G) A) and B)

Question 4

-What structure does "C" represent on the diagram of the plasma membrane?

Accepted Answer

A)  phospholipid bilayer
B)  integral protein
C)  membrane channel protein
D)  peripheral protein
E)  internal membrane surfaceF) None of the above
G) B) and E)

Question 5

The main components of the plasma membrane are

Accepted Answer

A)  lipids and ions.
B)  ions,lipids,and proteins.
C)  proteins,lipids,and carbohydrates.
D)  carbohydrates,ions,and lipids.
E)  proteins and carbohydrates.F) C) and E)
G) A) and B)

Question 6

When a sperm cell comes into contact with an egg cell,there is a change in the electrical charge across the plasma membrane and various channel proteins close.These channels would be called

Accepted Answer

A)  chemical-gated channels.
B)  ligand-gated channels.
C)  open-gated channels.
D)  nongated ion channels.
E)  voltage-gated channels.F) A) and C)
G) A) and B)

Question 7

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is solution "C" relative to the RBC?

Accepted Answer

A)  isotonic solution
B)  crenated
C)  hypertonic solution
D)  hemolyzed
E)  hypotonic solutionF) C) and E)
G) All of the above

Question 8

Which of the following is NOT true of a transmission electron microscope (TEM) ?

Accepted Answer

A)  The electron beam is focused with electromagnets.
B)  The specimen must be fixed in plastic.
C)  The limit of resolution is about 0.1 μ\muμ m.
D)  Electrons are passed through the specimen.
E)  Gives the clearest three-dimensional images. F) B) and D)
G) A) and B)

Question 9

A symporter will transport _____ across the cell membrane.

Accepted Answer

A)  two different ions or molecules in opposite directions
B)  two of the same ions or molecules in the same direction
C)  two different ions or molecules in the same direction
D)  two of the same ions or molecules in opposite directions
E)  one specific ion or moleculeF) None of the above
G) B) and C)

Question 10

Which of the following organelles function in the destruction of nonfunctional organelles?

Accepted Answer

A)  basal bodies
B)  centrioles
C)  mitochondria
D)  endoplasmic reticulum
E)  lysosomesF) A) and E)
G) B) and C)

Question 11

Which of the following events occurs in the nucleus?

Accepted Answer

A)  ATP synthesis
B)  ribosomal proteins formed
C)  chromatin condenses to form chromosomes
D)  manufacture of phospholipids
E)  None of these events occurs in the nucleus.F) B) and E)
G) None of the above

Question 12

Before cell division occurs,DNA in the nucleus is condensed to form

Accepted Answer

A)  RNA.
B)  genes.
C)  cytosol.
D)  chromosomes.
E)  chromatin.F) B) and D)
G) C) and D)

Question 13

The organelles that are the source of the spindle fibers are the

Accepted Answer

A)  lysosomes.
B)  mitochondria.
C)  centrioles.
D)  nucleus.
E)  ribosomes.F) A) and B)
G) B) and D)

Question 14

Which of the following molecules contains the anticodon?

Accepted Answer

A)  mRNA
B)  rRNA
C)  tRNA
D)  DNA
E)  None of these choices are correct.F) C) and E)
G) None of the above

Question 15

Endoplasmic reticulum with ribosomes attached to it is called

Accepted Answer

A)  nodular ER.
B)  smooth ER.
C)  dendritic ER.
D)  rough ER.
E)  bumpy ER.F) A) and B)
G) None of the above

Question 16

A cell can meet increased energy demands by an increase in

Accepted Answer

A)  ribosomal subunits.
B)  the number of mitochondria.
C)  nuclear DNA activity.
D)  its overall size so it has more room to generate energy.
E)  lysosomal enzyme and ribosome activity within the cell.F) None of the above
G) A) and D)

Question 17

Which of the following is NOT consistent with active transport?

Accepted Answer

A)  uses cell energy
B)  movement is against a concentration gradient
C)  movement is with a concentration gradient
D)  exhibits competition and saturation
E)  involves a carrierF) B) and D)
G) A) and C)

Question 18

_____________ pressure is the force required to prevent the movement of water by osmosis across a semipermeable membrane.

Accepted Answer

A)  Filtration
B)  Hydrolic
C)  Hydration
D)  Osmotic
E)  FluidF) A) and D)
G) A) and C)

Question 19

The time between cell divisions is called

Accepted Answer

A)  metaphase.
B)  interphase.
C)  prophase.
D)  telophase.
E)  anaphase.F) All of the above
G) A) and D)

Question 20

What organelles are small vacuoles containing oxidative enzymes?

Accepted Answer

A)  peroxisomes
B)  flagellum
C)  endoplasmic reticulum
D)  Golgi apparatus
E)  nucleolusF) A) and B)
G) A) and E)

Exam 3: Cell Biology

Which of the following correctly matches a nuclear structure with its function?

Correct AnswerverifiedShow Answer

There is a concentration differernce for Na+ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H+.This secondary active transport in the intestine works by the following.(Check all that apply.)

Correct AnswerverifiedShow Answer

The time between cell divisions is called

Correct AnswerverifiedShow Answer

-What structure does "C" represent on the diagram of the plasma membrane?

Correct AnswerverifiedShow Answer

What organelles are small vacuoles containing oxidative enzymes?

Correct AnswerverifiedShow Answer

Chromosomes begin migrating towards poles of the cell during

Correct AnswerverifiedShow Answer

Which of the following is NOT true of a transmission electron microscope (TEM) ?

Correct AnswerverifiedShow Answer

Which of the following is NOT consistent with active transport?

Correct AnswerverifiedShow Answer

When a sperm cell comes into contact with an egg cell,there is a change in the electrical charge across the plasma membrane and various channel proteins close.These channels would be called

Correct AnswerverifiedShow Answer

The main components of the plasma membrane are

Correct AnswerverifiedShow Answer

A symporter will transport _____ across the cell membrane.

Correct AnswerverifiedShow Answer

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is solution "C" relative to the RBC?

Correct AnswerverifiedShow Answer

Which of the following organelles function in the destruction of nonfunctional organelles?

Correct AnswerverifiedShow Answer

A cell can meet increased energy demands by an increase in

Correct AnswerverifiedShow Answer

The organelles that are the source of the spindle fibers are the

Correct AnswerverifiedShow Answer

Endoplasmic reticulum with ribosomes attached to it is called

Correct AnswerverifiedShow Answer

_____________ pressure is the force required to prevent the movement of water by osmosis across a semipermeable membrane.

Correct AnswerverifiedShow Answer

Which of the following molecules contains the anticodon?

Correct AnswerverifiedShow Answer

Before cell division occurs,DNA in the nucleus is condensed to form

Correct AnswerverifiedShow Answer

Which of the following events occurs in the nucleus?

Correct AnswerverifiedShow Answer

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There is a concentration differernce for Na⁺ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H⁺.This secondary active transport in the intestine works by the following.(Check all that apply.)

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