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)  lipoproteins 
A)  peripheral proteins 
B)  extrinsic proteins 
C)  integral proteins 
D)  glycoproteins 
E)  lipoproteins C

Question 2

Which organelle is a small vesicle containing oxidative enzymes?

Accepted Answer

A)  Endoplasmic reticulum 
B)  Golgi apparatus 
C)  Nucleolus 
D)  Peroxisome 
E)  Flagellum 
A)  Endoplasmic reticulum 
B)  Golgi apparatus 
C)  Nucleolus 
D)  Peroxisome 
E)  Flagellum D

Question 3

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

Question 4

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 transport 
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 transport

Question 5

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

Question 6

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)  lysosomes 
A)  centrosomes 
B)  peroxisomes 
C)  liposomes 
D)  ribosomes 
E)  lysosomes

Question 7

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 channels 
A)  Cadherins 
B)  Ligand-gated ion channels 
C)  ATP-powered pumps 
D)  Leak-ion channels

Question 8

Which organelles are the sites of protein synthesis?

Accepted Answer

A)  Nucleus 
B)  Ribosomes 
C)  Lysosomes 
D)  Mitochondria 
E)  Centrioles 
A)  Nucleus 
B)  Ribosomes 
C)  Lysosomes 
D)  Mitochondria 
E)  Centrioles

Question 9

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

Question 10

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 proteins 
A)  Marker molecules 
B)  Channel protein 
C)  Receptor proteins 
D)  Enzymes 
E)  Carrier proteins

Question 11

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) 
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)

Question 12

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 cell 
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 cell

Question 13

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

Question 14

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 energy 
A)  communicating 
B)  metabolizing 
C)  reproducing 
D)  synthesizing 
E)  using energy

Question 15

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. 
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.

Question 16

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. 
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.

Question 17

DNA replication occurs during

Accepted Answer

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

Question 18

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)  codon 
A)  pre-mRNA 
B)  proenzyme 
C)  gene 
D)  ribosomal RNA (rRN
A)  
E)  codon

Question 19

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

Question 20

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)  Flagellum 
A)  Endoplasmic reticulum 
B)  Golgi apparatus 
C)  Nucleolus 
D)  Peroxisomes 
E)  Flagellum

Exam 3: Cell Biology

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

Which organelle is a small vesicle containing oxidative enzymes?

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

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

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

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

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

Which organelles are the sites of protein synthesis?

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

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

Which type of cell has abundant ribosomes?

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.)

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

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

Which of the following will increase the rate of diffusion?

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

DNA replication occurs during

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

Which of the following sequences is correct?

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

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

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.)