Question 1

This type of membrane protein extends across the entire lipid bilayer of the plasma membrane touching both intracellular fluid and the extracellular fluid.

Accepted Answer

A) complement protein 
B) transmembrane protein 
C) peripheral protein 
D) lipoprotein 
E) All of these choices are correct. 
A) complement protein 
B) transmembrane protein 
C) peripheral protein 
D) lipoprotein 
E) All of these choices are correct.

Question 2

Which of the following membrane-enclosed organelles modifies,sorts,and packages proteins destined for other regions of the cell?

Accepted Answer

A) endoplasmic reticulum 
B) Golgi complex 
C) peroxisomes 
D) nucleus 
E) proteasome 
A) endoplasmic reticulum 
B) Golgi complex 
C) peroxisomes 
D) nucleus 
E) proteasome

Question 3

In the diagram,which panel shows the kinetochore of the centromeres aligning along the center of the mitotic spindle of the cell?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 4

This portion of a DNA segment does not code for a protein.

Accepted Answer

A) RNA 
B) introns 
C) exons 
D) polyribosome 
E) ribosome 
A) RNA 
B) introns 
C) exons 
D) polyribosome 
E) ribosome

Question 5

Which of the following represents an ion channel?

Accepted Answer

A) F 
B) C 
C) D 
D) A 
E) E 
A) F 
B) C 
C) D 
D) A 
E) E

Question 6

This cellular organelle is comprised of a pair of centrioles and the surrounding pericentriolar material.

Accepted Answer

A) cytoskeleton 
B) cilia 
C) centrosome 
D) flagella 
E) peroxisomes 
A) cytoskeleton 
B) cilia 
C) centrosome 
D) flagella 
E) peroxisomes

Question 7

Briefly describe the fluid mosaic model.

Accepted Answer

The fluid mosaic model states

Question 8

This type of membrane protein enables cells to catalyze specific chemical reactions at the inner or outer surface of their plasma membrane.

Accepted Answer

A) receptors 
B) phospholipids 
C) cholesterol 
D) enzymes 
E) ligands 
A) receptors 
B) phospholipids 
C) cholesterol 
D) enzymes 
E) ligands

Question 9

During this phase of cell division,organelles duplicate and centrosome replication begins.

Accepted Answer

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

Question 10

Which of the following is the correct sequence of events in receptor-mediated endocytosis shown in the figure?

Accepted Answer

A) binding > degradation in lysosomes > vesicle formation > uncoating > recycling of receptors to plasma membrane > fusion with endosome 
B) degradation in lysosomes > fusion with endosome > recycling of receptors to plasma membrane > uncoating > vesicle formation > binding 
C) degradation in lysosomes > recycling of receptors to plasma membrane > fusion with endosome > uncoating > vesicle formation > binding 
D) binding > vesicle formation > uncoating > fusion with endosome > recycling of receptors to plasma membrane > degradation in lysosomes 
E) binding > uncoating > vesicle formation > fusion with endosome > degradation in lysosomes > recycling of receptors to plasma membrane 
A) binding > degradation in lysosomes > vesicle formation > uncoating > recycling of receptors to plasma membrane > fusion with endosome 
B) degradation in lysosomes > fusion with endosome > recycling of receptors to plasma membrane > uncoating > vesicle formation > binding 
C) degradation in lysosomes > recycling of receptors to plasma membrane > fusion with endosome > uncoating > vesicle formation > binding 
D) binding > vesicle formation > uncoating > fusion with endosome > recycling of receptors to plasma membrane > degradation in lysosomes 
E) binding > uncoating > vesicle formation > fusion with endosome > degradation in lysosomes > recycling of receptors to plasma membrane

Question 11

In the diagram,which one represents carrier-mediated facilitated diffusion?

Accepted Answer

A) A 
B) B 
C) C 
D) Both A and C 
E) Both B and C 
A) A 
B) B 
C) C 
D) Both A and C 
E) Both B and C

Question 12

What compound would a cell lacking ribosomes be unable to make?

Accepted Answer

A) lipids 
B) nucleotides 
C) proteins 
D) carbohydrates 
E) phospholipids 
A) lipids 
B) nucleotides 
C) proteins 
D) carbohydrates 
E) phospholipids

Question 13

In the diagram,which organelle aids movement of the cell?

Accepted Answer

A) A 
B) G 
C) H 
D) D 
E) I 
A) A 
B) G 
C) H 
D) D 
E) I

Question 14

Most intravenous solutions are _____ with respect to blood cells?

Accepted Answer

A) tonicity 
B) isotonic 
C) hypertonic 
D) osmotic 
E) hypotonic 
A) tonicity 
B) isotonic 
C) hypertonic 
D) osmotic 
E) hypotonic

Question 15

Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?

Accepted Answer

A) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released 
B) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes 
C) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes 
D) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
E) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
A) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released 
B) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes 
C) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes 
D) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
E) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released

Question 16

Compare mitosis to meiosis.

Accepted Answer

Mitosis is somatic cell division that pr

Question 17

Which of the following transport process uses vesicles formed at the plasma membrane to take up extracellular substances and import them into the cell?

Accepted Answer

A) endocytosis 
B) exocytosis 
C) facilitated diffusion 
D) osmosis 
E) Both endocytosis and exocytosis. 
A) endocytosis 
B) exocytosis 
C) facilitated diffusion 
D) osmosis 
E) Both endocytosis and exocytosis.

Question 18

Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins?

Accepted Answer

A) rough endoplasmic reticulum 
B) smooth endoplasmic reticulum 
C) nucleus 
D) centrosome 
E) Golgi complex 
A) rough endoplasmic reticulum 
B) smooth endoplasmic reticulum 
C) nucleus 
D) centrosome 
E) Golgi complex

Question 19

Which organelle is responsible for synthesis of steroids,phospholipids and functions as a reservoir for Ca2+?

Accepted Answer

A) mitochondrion 
B) secretory vesicle 
C) smooth endoplasmic reticulum 
D) rough endoplasmic reticulum 
E) lysosome 
A) mitochondrion 
B) secretory vesicle 
C) smooth endoplasmic reticulum 
D) rough endoplasmic reticulum 
E) lysosome

Question 20

What is the major function of histones?

Accepted Answer

A) needed for helix formation of the DNA 
B) add negative charge to the DNA 
C) help organize coiling and folding of the DNA 
D) degrade faulty proteins in the nucleus 
E) catalyze methylation of the DNA 
A) needed for helix formation of the DNA 
B) add negative charge to the DNA 
C) help organize coiling and folding of the DNA 
D) degrade faulty proteins in the nucleus 
E) catalyze methylation of the DNA

Exam 3: The Cellular Level of Organization

This type of membrane protein extends across the entire lipid bilayer of the plasma membrane touching both intracellular fluid and the extracellular fluid.

Which of the following membrane-enclosed organelles modifies,sorts,and packages proteins destined for other regions of the cell?

In the diagram,which panel shows the kinetochore of the centromeres aligning along the center of the mitotic spindle of the cell?

This portion of a DNA segment does not code for a protein.

Which of the following represents an ion channel?

This cellular organelle is comprised of a pair of centrioles and the surrounding pericentriolar material.

Briefly describe the fluid mosaic model.

This type of membrane protein enables cells to catalyze specific chemical reactions at the inner or outer surface of their plasma membrane.

During this phase of cell division,organelles duplicate and centrosome replication begins.

Which of the following is the correct sequence of events in receptor-mediated endocytosis shown in the figure?

In the diagram,which one represents carrier-mediated facilitated diffusion?

What compound would a cell lacking ribosomes be unable to make?

In the diagram,which organelle aids movement of the cell?

Most intravenous solutions are _____ with respect to blood cells?

Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?

Compare mitosis to meiosis.

Which of the following transport process uses vesicles formed at the plasma membrane to take up extracellular substances and import them into the cell?

Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins?

Which organelle is responsible for synthesis of steroids,phospholipids and functions as a reservoir for Ca2+?

What is the major function of histones?

An Introduction to the Human Body

The Chemical Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System Unit Iii: Control Systems of the Human Body

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System Unit Iv: Maintenance of the Human Body

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Development and Inheritance

Filters

Which organelle is responsible for synthesis of steroids,phospholipids and functions as a reservoir for Ca²⁺?