Question 1

Membrane proteins that extend into the lipid bilayer are called ________.

Accepted Answer

A)   peripheral proteins
B)   extrinsic proteins
C)   integral proteins
D)   glycoproteins
E)   lipoproteinsF) C) and D)
G) C) and E) C

Question 2

Which type of transport proteins use cell energy to move molecules across the plasma membrane?

Accepted Answer

A)   Cadherins
B)   Ligand-gated ion channels
C)   ATP-powered pumps
D)   Leak-ion channelsE) A) and D)
F) None of the above

Question 3

Of the organelles listed, which one does NOT contain microtubules?

Accepted Answer

A)   Cilia
B)   Flagella
C)   Centrioles
D)   Microvilli
E)   All of the choices contain microtubules.F) A) and B)
G) A) and C)

Question 4

Which type of cell has abundant ribosomes?

Accepted Answer

A)   White blood cell, a phagocyte
B)   Red blood cell (transports oxygen) 
C)   Liver cells that detoxify hydrogen peroxide
D)   Cardiac muscle cells (require large amounts of ATP) 
E)   Fibroblast (makes protein fibers) F) B) and E)
G) B) and D)

Question 5

Which of the following organelles may or may not have ribosomes attached?

Accepted Answer

A)   Endoplasmic reticulum
B)   Golgi apparatus
C)   Nucleolus
D)   Peroxisomes
E)   FlagellumF) B) and C)
G) B) and E)

Question 6

Which of the following sequences is correct?

Accepted Answer

A)   Translation → protein synthesis → transcription
B)   Transcription → translation → protein synthesis
C)   Transcription → protein synthesis → translation
D)   Translation → transcription → protein synthesis
E)   Protein synthesis → translation → transcriptionF) B) and C)
G) A) and E)

Question 7

Portions of pre-mRNA that do NOT code for parts of a protein are called ________.

Accepted Answer

A)   introns
B)   start codons
C)   exons
D)   stop codons
E)   Introns, start codons, and stop codons code for parts of a protein.F) A) and B)
G) A) and E)

Question 8

In intestinal epithelial cells, Na+ is in higher concentrations outside of the cells. This gradient provides the energy for the symport of glucose into the cells. Which of the following explain how this transport mechanism works. (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) B) and D)
G) B) and C)

Question 9

A protein that is converted to an active enzyme is a ________.

Accepted Answer

A)   pre-mRNA
B)   proenzyme
C)   gene
D)   ribosomal RNA (rRN
A)  
E)   codonF) B) and D)
G) A) and E)

Question 10

DNA replication occurs during

Accepted Answer

A)   the G1 phase of interphase.
B)   telophase.
C)   the S phase of interphase.
D)   anaphase.
E)   metaphase.F) A) and C)
G) A) and B)

Question 11

Which organelles are the sites of protein synthesis?

Accepted Answer

A)   Nucleus
B)   Ribosomes
C)   Lysosomes
D)   Mitochondria
E)   CentriolesF) All of the above
G) None of the above

Question 12

Which type of membrane proteins allow cells to identify one another?

Accepted Answer

A)   Marker molecules
B)   Channel protein
C)   Receptor proteins
D)   Enzymes
E)   Carrier proteinsF) A) and E)
G) None of the above

Question 13

Check all that occur at the cellular level as a result of aging.

Accepted Answer

A)   Cells experience increased metabolic functions.
B)   Cells experience a decreased ability to maintain homeostasis.
C)   The process of cell division becomes faulty, resulting in a greater risk for cancer.
D)   The risk for unsuccessful completion of sex cell division and maturation decreases.E) B) and D)
F) None of the above

Question 14

A group of cells was treated with a proteolytic (protein-digesting)  enzyme. Which of the following processes would be least affected by this treatment?

Accepted Answer

A)   Diffusion of Na+ through membrane channels
B)   Diffusion of lipid-soluble molecules through the plasma membrane
C)   Use of carrier molecules in facilitated diffusion
D)   Sodium-potassium exchange pump
E)   Secondary active transportF) A) and B)
G) A) and C)

Question 15

Skeletal muscle cells need large numbers of ________ to make the many proteins they contain.

Accepted Answer

A)   centrosomes
B)   peroxisomes
C)   liposomes
D)   ribosomes
E)   lysosomesF) D) and E)
G) C) and E)

Question 16

Cells produce and respond to chemical and electrical signals as a means of ________.

Accepted Answer

A)   communicating
B)   metabolizing
C)   reproducing
D)   synthesizing
E)   using energyF) A) and B)
G) D) and E)

Question 17

Which organelle is a small vesicle containing oxidative enzymes?

Accepted Answer

A)   Endoplasmic reticulum
B)   Golgi apparatus
C)   Nucleolus
D)   Peroxisome
E)   FlagellumF) None of the above
G) A) and E) D

Question 18

The environment outside the plasma membrane is most appropriately referred to as ________.

Accepted Answer

A)   intracellular
B)   extracellular
C)   multicellular
D)   centrocellular
E)   None of the choices are correct.F) A) and D)
G) A) and C)

Question 19

Which of the following will increase the rate of diffusion?

Accepted Answer

A)   An increase in the viscosity of the solvent
B)   An increase in the temperature
C)   An increase in the molecular weight of the diffusing particles
D)   An increase in the distance the molecules have to travel
E)   All of the choices are correct.F) All of the above
G) A) and D)

Question 20

Which of the following is NOT a G-protein complex protein?

Accepted Answer

A)   Delta
B)   Gamma
C)   Alpha
D)   Beta
E)   None of the choices are correct.F) C) and D)
G) A) and D) A

Exam 3: Cell Biology

Membrane proteins that extend into the lipid bilayer are called ________.

Correct AnswerverifiedC

Which type of transport proteins use cell energy to move molecules across the plasma membrane?

Correct AnswerverifiedShow Answer

Of the organelles listed, which one does NOT contain microtubules?

Correct AnswerverifiedShow Answer

Which type of cell has abundant ribosomes?

Correct AnswerverifiedShow Answer

Which of the following organelles may or may not have ribosomes attached?

Correct AnswerverifiedShow Answer

Which of the following sequences is correct?

Correct AnswerverifiedShow Answer

Portions of pre-mRNA that do NOT code for parts of a protein are called ________.

Correct AnswerverifiedShow Answer

In intestinal epithelial cells, Na+ is in higher concentrations outside of the cells. This gradient provides the energy for the symport of glucose into the cells. Which of the following explain how this transport mechanism works. (Check all that apply.)

Correct AnswerverifiedShow Answer

A protein that is converted to an active enzyme is a ________.

Correct AnswerverifiedShow Answer

DNA replication occurs during

Correct AnswerverifiedShow Answer

Which organelles are the sites of protein synthesis?

Correct AnswerverifiedShow Answer

Which type of membrane proteins allow cells to identify one another?

Correct AnswerverifiedShow Answer

Check all that occur at the cellular level as a result of aging.

Correct AnswerverifiedShow Answer

A group of cells was treated with a proteolytic (protein-digesting) enzyme. Which of the following processes would be least affected by this treatment?

Correct AnswerverifiedShow Answer

Skeletal muscle cells need large numbers of ________ to make the many proteins they contain.

Correct AnswerverifiedShow Answer

Cells produce and respond to chemical and electrical signals as a means of ________.

Correct AnswerverifiedShow Answer

Which organelle is a small vesicle containing oxidative enzymes?

Correct AnswerverifiedD

The environment outside the plasma membrane is most appropriately referred to as ________.

Correct AnswerverifiedShow Answer

Which of the following will increase the rate of diffusion?

Correct AnswerverifiedShow Answer

Which of the following is NOT a G-protein complex protein?

Correct AnswerverifiedA

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In intestinal epithelial cells, Na⁺ is in higher concentrations outside of the cells. This gradient provides the energy for the symport of glucose into the cells. Which of the following explain how this transport mechanism works. (Check all that apply.)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A