Question 1

The endoplasmic reticulum is responsible for all of the following except

Accepted Answer

A)  drug and toxin neutralization. 
B)  lipid synthesis. 
C)  modification of new proteins. 
D)  passing molecules to the Golgi apparatus. 
E)  housing the chromosomes. 
A)  drug and toxin neutralization. 
B)  lipid synthesis. 
C)  modification of new proteins. 
D)  passing molecules to the Golgi apparatus. 
E)  housing the chromosomes.

Question 2

The start of each gene begins with a(n) ________ segment.

Accepted Answer

A)  neocodon 
B)  intron 
C)  histone 
D)  promoter 
E)  boosting 
A)  neocodon 
B)  intron 
C)  histone 
D)  promoter 
E)  boosting

Question 3

Ribosomes are composed of protein and

Accepted Answer

A)  glycogen. 
B)  rRNA. 
C)  ATP. 
D)  DNA. 
E)  steroids. 
A)  glycogen. 
B)  rRNA. 
C)  ATP. 
D)  DNA. 
E)  steroids.

Question 4

Imagine a beaker divided down the center by a rigid membrane that is freely permeable to water but impermeable to glucose. Side 1 contains a 10 percent glucose solution and side 2 contains the same volume of pure water. At equilibrium, what will be the situation?

Accepted Answer

A)  Water will continue to move from side 1 to side 2. 
B)  Water will continue to move from side 2 to side 1. 
C)  The volume of liquid will be greater in side 1. 
D)  The volume of liquid will be greater in side 2. 
E)  The volume of liquid remain equal on both sides. 
A)  Water will continue to move from side 1 to side 2. 
B)  Water will continue to move from side 2 to side 1. 
C)  The volume of liquid will be greater in side 1. 
D)  The volume of liquid will be greater in side 2. 
E)  The volume of liquid remain equal on both sides.

Question 5

Synthesis of lipids and glycogen takes place at the

Accepted Answer

A)  ribosomes. 
B)  rough ER. 
C)  smooth ER. 
D)  Golgi apparatus. 
E)  mitochondria. 
A)  ribosomes. 
B)  rough ER. 
C)  smooth ER. 
D)  Golgi apparatus. 
E)  mitochondria.

Question 6

A gene is a set of specific instructions that

Accepted Answer

A)  produces amino acids for proteins. 
B)  copies DNA strands for mitosis. 
C)  controls the process of mitosis. 
D)  indicates the sequence of amino acids in a protein molecule. 
E)  directs carbohydrate synthesis. 
A)  produces amino acids for proteins. 
B)  copies DNA strands for mitosis. 
C)  controls the process of mitosis. 
D)  indicates the sequence of amino acids in a protein molecule. 
E)  directs carbohydrate synthesis.

Question 7

Before the mRNA transcribed from a gene can be used to translate into a protein, it must be

Accepted Answer

A)  edited to remove introns. 
B)  edited to remove exons. 
C)  transported into the cytoplasm. 
D)  edited to remove introns and transported into the cytoplasm. 
E)  coated with phospholipids for transport out of the nucleus. 
A)  edited to remove introns. 
B)  edited to remove exons. 
C)  transported into the cytoplasm. 
D)  edited to remove introns and transported into the cytoplasm. 
E)  coated with phospholipids for transport out of the nucleus.

Question 8

Membrane proteins perform all of the following functions except

Accepted Answer

A)  anchoring the cell to other structures. 
B)  binding to extracellular ligands. 
C)  transporting solutes across the membrane. 
D)  catalyzing chemical reactions. 
E)  metabolizing glucose to gain energy. 
A)  anchoring the cell to other structures. 
B)  binding to extracellular ligands. 
C)  transporting solutes across the membrane. 
D)  catalyzing chemical reactions. 
E)  metabolizing glucose to gain energy.

Question 9

In-Text Figure Based Questions
-Describe the concentration of the intracellular fluid relative to the extracellular fluid in parts b andc.(Figure 3-17)

Accepted Answer

A) ______hypotonic to the extracellular fluid; hypertonic to the extracellular fluid 
B)  hypertonic to the extracellular fluid; hypotonic to the extracellular fluid 
C)  isotonic to the extracellular fluid; hypertonic to the extracellular fluid 
D)  isotonic to the extracellular fluid; hypotonic to the extracellular fluid 
E)  hypertonic to the extracellular fluid; isotonic to the extracellular fluid 
A) ______hypotonic to the extracellular fluid; hypertonic to the extracellular fluid 
B)  hypertonic to the extracellular fluid; hypotonic to the extracellular fluid 
C)  isotonic to the extracellular fluid; hypertonic to the extracellular fluid 
D)  isotonic to the extracellular fluid; hypotonic to the extracellular fluid 
E)  hypertonic to the extracellular fluid; isotonic to the extracellular fluid

Question 10

Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are called ________ pumps.

Accepted Answer

A)  channel 
B)  receptor 
C)  active 
D)  motor 
E)  ion 
A)  channel 
B)  receptor 
C)  active 
D)  motor 
E)  ion

Question 11

Permanent alterations in a cell's DNA that affect the nucleotide sequence of one or more genes are called

Accepted Answer

A)  interferons. 
B)  mutations. 
C)  reconstructions. 
D)  polymorphs. 
E)  changelings. 
A)  interferons. 
B)  mutations. 
C)  reconstructions. 
D)  polymorphs. 
E)  changelings.

Question 12

Figure 3-1 The Plasma membrane

Use Figure 3-1 to answer the following questions.
-Which structure is water most likely to pass through?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  8 
A)  1 
B)  2 
C)  3 
D)  4 
E)  8

Question 13

When activated, lysosomes function in

Accepted Answer

A)  formation of new cell membranes. 
B)  synthesis of proteins. 
C)  digestion of materials. 
D)  synthesis of lipids. 
E)  cell division. 
A)  formation of new cell membranes. 
B)  synthesis of proteins. 
C)  digestion of materials. 
D)  synthesis of lipids. 
E)  cell division.

Question 14

Which of these substances could be driven across a membrane by the resting membrane potential?

Accepted Answer

A)  H2O 
B)  O2 
C)  glucose 
D)  Na+ 
E)  CO2 
A)  H2O 
B)  O2 
C)  glucose 
D)  Na+ 
E)  CO2

Question 15

During protein synthesis, amino acids are assembled in the proper sequence because each tRNA has a(n) ________ that binds to the next codon in the mRNA.

Accepted Answer

A)  enzyme 
B)  nucleotide 
C)  anticodon 
D)  promotor 
E)  transporter 
A)  enzyme 
B)  nucleotide 
C)  anticodon 
D)  promotor 
E)  transporter

Question 16

Transfer of mRNA from the nucleus to the cytosol occurs through

Accepted Answer

A)  carrier proteins. 
B)  gap junctions. 
C)  nucleosides. 
D)  gap lines. 
E)  nuclear pores. 
A)  carrier proteins. 
B)  gap junctions. 
C)  nucleosides. 
D)  gap lines. 
E)  nuclear pores.

Question 17

Match the organelle (1-4) with the correct description (5-8).
1) mitochondrion 5) synthesizing molecules
2) centriole 6) liquid in cell
3) endoplasmic reticulum 7) provides cell with energy
4) cytosol 8) aids the formation of the spindle apparatus

Accepted Answer

A)  1 and 7, 2 and 6, 3 and 8, 4 and 5 
B)  1 and 8, 2 and 5, 3 and 6, 4 and 7 
C)  1 and 7, 2 and 8, 3 and 5, 4 and 6 
D)  1 and 5, 2 and 6, 3 and 7, 4 and 8 
E)  1 and 6, 2 and 8, 3 and 5, 4 and 7 
A)  1 and 7, 2 and 6, 3 and 8, 4 and 5 
B)  1 and 8, 2 and 5, 3 and 6, 4 and 7 
C)  1 and 7, 2 and 8, 3 and 5, 4 and 6 
D)  1 and 5, 2 and 6, 3 and 7, 4 and 8 
E)  1 and 6, 2 and 8, 3 and 5, 4 and 7

Question 18

Centrioles form the basal bodies that anchor microtubules within cilia and

Accepted Answer

A)  flagella. 
B)  microfilaments. 
C)  microvilli. 
D)  ribosomes. 
E)  chromosomes. 
A)  flagella. 
B)  microfilaments. 
C)  microvilli. 
D)  ribosomes. 
E)  chromosomes.

Question 19

Facilitated diffusion differs from ordinary diffusion in that

Accepted Answer

A)  facilitated diffusion consumes ATP. 
B)  facilitated diffusion moves molecules from an area of lower concentration to an area of higher concentration. 
C)  the rate of facilitated diffusion is limited by the number of available carrier proteins. 
D)  facilitated diffusion never eliminates the concentration gradient. 
E)  facilitated diffusion does not rely on carrier proteins. 
A)  facilitated diffusion consumes ATP. 
B)  facilitated diffusion moves molecules from an area of lower concentration to an area of higher concentration. 
C)  the rate of facilitated diffusion is limited by the number of available carrier proteins. 
D)  facilitated diffusion never eliminates the concentration gradient. 
E)  facilitated diffusion does not rely on carrier proteins.

Question 20

Functions of the plasma membrane include all of the following except

Accepted Answer

A)  separation of the cytoplasm from the extracellular fluid. 
B)  regulation of exchange of materials with the extracellular environment. 
C)  sensitivity to chemical changes in the extracellular fluid. 
D)  thermal insulation. 
E)  structural support. 
A)  separation of the cytoplasm from the extracellular fluid. 
B)  regulation of exchange of materials with the extracellular environment. 
C)  sensitivity to chemical changes in the extracellular fluid. 
D)  thermal insulation. 
E)  structural support.

Exam 3: The Cellular Level of Organization

The endoplasmic reticulum is responsible for all of the following except

The start of each gene begins with a(n) ________ segment.

Ribosomes are composed of protein and

Imagine a beaker divided down the center by a rigid membrane that is freely permeable to water but impermeable to glucose. Side 1 contains a 10 percent glucose solution and side 2 contains the same volume of pure water. At equilibrium, what will be the situation?

Synthesis of lipids and glycogen takes place at the

A gene is a set of specific instructions that

Before the mRNA transcribed from a gene can be used to translate into a protein, it must be

Membrane proteins perform all of the following functions except

In-Text Figure Based Questions -Describe the concentration of the intracellular fluid relative to the extracellular fluid in parts b andc.(Figure 3-17)

Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are called ________ pumps.

Permanent alterations in a cell's DNA that affect the nucleotide sequence of one or more genes are called

Figure 3-1 The Plasma membrane Use Figure 3-1 to answer the following questions. -Which structure is water most likely to pass through?

When activated, lysosomes function in

Which of these substances could be driven across a membrane by the resting membrane potential?

During protein synthesis, amino acids are assembled in the proper sequence because each tRNA has a(n) ________ that binds to the next codon in the mRNA.

Transfer of mRNA from the nucleus to the cytosol occurs through

Match the organelle (1-4) with the correct description (5-8). 1) mitochondrion 5) synthesizing molecules 2) centriole 6) liquid in cell 3) endoplasmic reticulum 7) provides cell with energy 4) cytosol 8) aids the formation of the spindle apparatus

Centrioles form the basal bodies that anchor microtubules within cilia and

Facilitated diffusion differs from ordinary diffusion in that

Functions of the plasma membrane include all of the following except

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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