Question 1

Which of the following organelles contains catalase?

Accepted Answer

A)  peroxisomes 
B)  mitochondria 
C)  lysosomes 
D)  vaults 
E)  all of these, except vaults 
A)  peroxisomes 
B)  mitochondria 
C)  lysosomes 
D)  vaults 
E)  all of these, except vaults

Question 2

Complete each of the following statments.
On a microtubule, the motor molecule called ____________________ moves toward a centriole.

Accepted Answer

The answer of Complete each of the following statments.
On a...

Question 3

All cell organelles are renewable.

Accepted Answer

A) True 
 B)False

Question 4

Electron microscopes are about 1000 times more powerful than light microscopes.

Accepted Answer

A) True 
 B)False

Question 5

Coated vesicles enclose a representative mixture of proteins present in the Golgi sac before budding off.

Accepted Answer

A) True 
 B)False

Question 6

Which characteristic of the Golgi complex is incorrect?

Accepted Answer

A)  It sorts and directs products to their final destination. 
B)  It modified proteins chemically. 
C)  It produces secretory vesicles. 
D)  It synthesizes proteins using free ribosomes. 
E)  It receives transport vesicles coming from the ER. 
A)  It sorts and directs products to their final destination. 
B)  It modified proteins chemically. 
C)  It produces secretory vesicles. 
D)  It synthesizes proteins using free ribosomes. 
E)  It receives transport vesicles coming from the ER.

Question 7

The smooth endoplasmic reticulum

Accepted Answer

A)  is most abundant in cells specialized for protein secretion 
B)  gives rise to transport vesicles containing newly synthesized molecules wrapped in a layer of smooth ER membrane 
C)  consists of stacks of relatively flattened sacs called cisternae 
D)  has many ribosomes 
E)  all of these 
A)  is most abundant in cells specialized for protein secretion 
B)  gives rise to transport vesicles containing newly synthesized molecules wrapped in a layer of smooth ER membrane 
C)  consists of stacks of relatively flattened sacs called cisternae 
D)  has many ribosomes 
E)  all of these

Question 8

The protective, waterproof outer layer of skin is formed by the tough skeleton of intermediate filaments that persist after the surface skin cells die.

Accepted Answer

A) True 
 B)False

Question 9

The complexes within electron transport chains

Accepted Answer

A)  are "circuits" for small amounts of electricity to pass through 
B)  contain NADH that transports electrons 
C)  transport H+ into the mitochondrial matrix 
D)  are in the mitochondrion's inner membrane 
E)  all of these 
A)  are "circuits" for small amounts of electricity to pass through 
B)  contain NADH that transports electrons 
C)  transport H+ into the mitochondrial matrix 
D)  are in the mitochondrion's inner membrane 
E)  all of these

Question 10

The rough endoplasmic reticulum

Accepted Answer

A)  is studded with ribosomes 
B)  synthesizes proteins for export from the cell or for use in construction of a new cellular membrane 
C)  is continuous with the smooth endoplasmic reticulum 
D)  is connected to the nucleus 
E)  all of these 
A)  is studded with ribosomes 
B)  synthesizes proteins for export from the cell or for use in construction of a new cellular membrane 
C)  is continuous with the smooth endoplasmic reticulum 
D)  is connected to the nucleus 
E)  all of these

Question 11

Which component below is not always found in a typical human cell?

Accepted Answer

A)  cytosol 
B)  DNA 
C)  flagellum 
D)  plasma membrane 
E)  water 
A)  cytosol 
B)  DNA 
C)  flagellum 
D)  plasma membrane 
E)  water

Question 12

Which statement regarding the citric acid cycle is incorrect?

Accepted Answer

A)  It occurs in the mitochondrial matrix. 
B)  It forms carbon dioxide. 
C)  It forms two ATP molecules during each turn. 
D)  Acetyl CoA and oxaloacetate react to form citric acid. 
E)  Each turn forms one molecule of GTP. 
A)  It occurs in the mitochondrial matrix. 
B)  It forms carbon dioxide. 
C)  It forms two ATP molecules during each turn. 
D)  Acetyl CoA and oxaloacetate react to form citric acid. 
E)  Each turn forms one molecule of GTP.

Question 13

The molecule that associates with microtubules to provide transport of secretory vesicles is

Accepted Answer

A)  actin 
B)  myosin 
C)  kinesin 
D)  tubulin 
E)  keratin 
A)  actin 
B)  myosin 
C)  kinesin 
D)  tubulin 
E)  keratin

Question 14

Complete each of the following statments.
In muscle cells, the sarcoplasmic reticulum stores the substance ____________________.

Accepted Answer

The answer of Complete each of the following statments.
In muscle...

Question 15

Oxidative phosphorylation generates more ATP per glucose molecule than does glycolysis.

Accepted Answer

A) True 
 B)False

Question 16

Complete each of the following statments.
____________________ are organelles that may possibly transport ribosomal subunits out of the nucleus.

Accepted Answer

The answer of Complete each of the following statments.
____________________ are...

Question 17

Describe the pathway that newly synthesized polypeptides take on route for secretion.

Accepted Answer

The rough ER synthesizes proteins, which

Question 18

Select the incorrect characteristic of mitochondria.

Accepted Answer

A)  They have an inner fluid-filled space called the cristae. 
B)  They possess their own DNA. 
C)  They are the site of cellular respiration. 
D)  Their inner membranes contain electron carriers. 
E)  They possess two membranes. 
A)  They have an inner fluid-filled space called the cristae. 
B)  They possess their own DNA. 
C)  They are the site of cellular respiration. 
D)  Their inner membranes contain electron carriers. 
E)  They possess two membranes.

Question 19

The rough endoplasmic reticulum is most abundant in cells specialized for protein secretion, whereas smooth endoplasmic reticulum is abundant in cells that specialize in lipid metabolism.

Accepted Answer

A) True 
 B)False

Question 20

The nucleus indirectly governs most cellular activities by directing the kinds and amounts of various enzymes and other proteins that are produced by the cell.

Accepted Answer

A) True 
 B)False

Exam 2: Cell Physiology

Which of the following organelles contains catalase?

Complete each of the following statments. On a microtubule, the motor molecule called ____________________ moves toward a centriole.

All cell organelles are renewable.

Electron microscopes are about 1000 times more powerful than light microscopes.

Coated vesicles enclose a representative mixture of proteins present in the Golgi sac before budding off.

Which characteristic of the Golgi complex is incorrect?

The smooth endoplasmic reticulum

The protective, waterproof outer layer of skin is formed by the tough skeleton of intermediate filaments that persist after the surface skin cells die.

The complexes within electron transport chains

The rough endoplasmic reticulum

Which component below is not always found in a typical human cell?

Which statement regarding the citric acid cycle is incorrect?

The molecule that associates with microtubules to provide transport of secretory vesicles is

Complete each of the following statments. In muscle cells, the sarcoplasmic reticulum stores the substance ____________________.

Oxidative phosphorylation generates more ATP per glucose molecule than does glycolysis.

Complete each of the following statments. ____________________ are organelles that may possibly transport ribosomal subunits out of the nucleus.

Describe the pathway that newly synthesized polypeptides take on route for secretion.

Select the incorrect characteristic of mitochondria.

The rough endoplasmic reticulum is most abundant in cells specialized for protein secretion, whereas smooth endoplasmic reticulum is abundant in cells that specialize in lipid metabolism.

The nucleus indirectly governs most cellular activities by directing the kinds and amounts of various enzymes and other proteins that are produced by the cell.

Introduction to Physiology and Homeostasis

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters