Question 1

Why do most cells in the body require oxygen molecules?

Accepted Answer

A)  Glucose cannot be broken down without it. 
B)  It pulls electrons off the electron transport chains in the last part of cellular respiration. 
C)  The electron transport system must pump it through the inner membrane for chemiosmosis. 
D)  ATP synthase uses it to add a phosphate ion to ADP in order to make ATP. 
E)  It pulls electrons off the electron transport chains in the last part of cellular respiration and ATP synthase uses it to add a phosphate ion to ADP in order to make ATP. 
A)  Glucose cannot be broken down without it. 
B)  It pulls electrons off the electron transport chains in the last part of cellular respiration. 
C)  The electron transport system must pump it through the inner membrane for chemiosmosis. 
D)  ATP synthase uses it to add a phosphate ion to ADP in order to make ATP. 
E)  It pulls electrons off the electron transport chains in the last part of cellular respiration and ATP synthase uses it to add a phosphate ion to ADP in order to make ATP.

Question 2

Amoeboid movement is accomplished by alternate assembly and disassembly of actin filaments.

Accepted Answer

A) True 
 B)False

Question 3

Which statement about the plasma membrane is not true?

Accepted Answer

A)  It serves as a mechanical barrier to hold in the contents of the cell. 
B)  It selectively controls movement of molecules between the ECF and the ICF. 
C)  It is the barrier that surrounds the blood vessels and separates the blood plasma from the interstitial fluid. 
D)  It contains proteins that provide membrane functions. 
E)  It has cholesterol to maintain rigidity. 
A)  It serves as a mechanical barrier to hold in the contents of the cell. 
B)  It selectively controls movement of molecules between the ECF and the ICF. 
C)  It is the barrier that surrounds the blood vessels and separates the blood plasma from the interstitial fluid. 
D)  It contains proteins that provide membrane functions. 
E)  It has cholesterol to maintain rigidity.

Question 4

Select the incorrect statement about the smooth ER.

Accepted Answer

A)  It is abundant in most cell types. 
B)  It is found in liver cells. 
C)  It specializes in lipid metabolism. 
D)  In one type of cell, it is called sarcoplasmic reticulum. 
E)  It does not contain ribosomes. 
A)  It is abundant in most cell types. 
B)  It is found in liver cells. 
C)  It specializes in lipid metabolism. 
D)  In one type of cell, it is called sarcoplasmic reticulum. 
E)  It does not contain ribosomes.

Question 5

Smooth ER in liver cells

Accepted Answer

A)  contains large numbers of ribosomes 
B)  is called sarcoplasmic reticulum and stores calcium 
C)  has enzymes to detoxify harmful substances 
D)  has no interactions with other organelles 
E)  none of these 
A)  contains large numbers of ribosomes 
B)  is called sarcoplasmic reticulum and stores calcium 
C)  has enzymes to detoxify harmful substances 
D)  has no interactions with other organelles 
E)  none of these

Question 6

Proteins synthesized at the endoplasmic reticulum become permanently separated from the cytosol as soon as they have been synthesized.

Accepted Answer

A) True 
 B)False

Question 7

NADH

Accepted Answer

A)  is an energy carrier 
B)  plays a role in cellular respiration 
C)  is produced in glycolysis 
D)  is produced in the citric acid cycle 
E)  all of these 
A)  is an energy carrier 
B)  plays a role in cellular respiration 
C)  is produced in glycolysis 
D)  is produced in the citric acid cycle 
E)  all of these

Question 8

Lysosomes synthesize hydrolase enzymes.

Accepted Answer

A) True 
 B)False

Question 9

Complete each of the following statments.
One glucose molecule is converted into two molecules of ____________________ by the end of glycolysis.

Accepted Answer

The answer of Complete each of the following statments.
One glucose...

Question 10

What might happen if you took in less than optimum amounts of niacin in your diet?

Accepted Answer

A)  Fewer pyruvate molecules would be produced. 
B)  Available FAD would increase. 
C)  The number of hydrogen ions pumped through the ETS in a given amount of time would increase. 
D)  The number of Krebs cycles occurring in a given amount of time would increase. 
E)  All of these. 
A)  Fewer pyruvate molecules would be produced. 
B)  Available FAD would increase. 
C)  The number of hydrogen ions pumped through the ETS in a given amount of time would increase. 
D)  The number of Krebs cycles occurring in a given amount of time would increase. 
E)  All of these.

Question 11

The cytoplasm includes everything between the plasma membrane and nucleus of a cell.

Accepted Answer

A) True 
 B)False

Question 12

Which structure is not associated with the secretion of proteins produced by ER?

Accepted Answer

A)  Golgi complex 
B)  smooth ER 
C)  transport vesicles 
D)  lysosomal membrane 
E)  plasma membrane 
A)  Golgi complex 
B)  smooth ER 
C)  transport vesicles 
D)  lysosomal membrane 
E)  plasma membrane

Question 13

Chemiosmosis

Accepted Answer

A)  releases CO2 
B)  extracts energy from a H+ concentration gradient 
C)  transfers hydrogens from the ETS to NAD+ 
D)  converts pyruvate to lactate 
E)  none of these 
A)  releases CO2 
B)  extracts energy from a H+ concentration gradient 
C)  transfers hydrogens from the ETS to NAD+ 
D)  converts pyruvate to lactate 
E)  none of these

Question 14

Indicate which of the characteristics applies to 1) glycolysis, 2) citric-acid cycle, or 3) oxidative phosphorylation.
 a. directly uses inspired oxygen 
b. doesnot directly use inspired oxygen 
c. takes place in the cytosol
d. takes place in the mito chondrial matrix 
e. takes place on the inner mitochondrial membran 
f.= low yield of ATP 
g. = high vield of ATP

Accepted Answer

glycolysis: b, c, f;

Question 15

Complete each of the following statments.
The metabolism of acetyl CoA into the citric acid cycle depends on the presence of ____________________ gas in the mitochondrion.

Accepted Answer

The answer of Complete each of the following statments.
The metabolism...

Question 16

The Golgi complex is functionally connected to the ER.

Accepted Answer

A) True 
 B)False

Question 17

Cristae are found in the

Accepted Answer

A)  lysosome 
B)  mitochondrion 
C)  nucleolus 
D)  nucleus 
E)  rough ER 
A)  lysosome 
B)  mitochondrion 
C)  nucleolus 
D)  nucleus 
E)  rough ER

Question 18

Complete each of the following statments.
Enzymes referred to as ____________________ enzymes use O2 to strip hydrogen from organic molecules.

Accepted Answer

Question 19

Which of the following may help transport ribosomal subunits out of the nucleus?

Accepted Answer

A)  Golgi complex 
B)  mitotic spindle 
C)  vault 
D)  centriole 
E)  secretory vesicle 
A)  Golgi complex 
B)  mitotic spindle 
C)  vault 
D)  centriole 
E)  secretory vesicle

Question 20

DNA in the nucleus has the genetic instructions to make enzymatic proteins.

Accepted Answer

A) True 
 B)False

Exam 2: Cell Physiology

Why do most cells in the body require oxygen molecules?

Amoeboid movement is accomplished by alternate assembly and disassembly of actin filaments.

Which statement about the plasma membrane is not true?

Select the incorrect statement about the smooth ER.

Smooth ER in liver cells

Proteins synthesized at the endoplasmic reticulum become permanently separated from the cytosol as soon as they have been synthesized.

NADH

Lysosomes synthesize hydrolase enzymes.

Complete each of the following statments. One glucose molecule is converted into two molecules of ____________________ by the end of glycolysis.

What might happen if you took in less than optimum amounts of niacin in your diet?

The cytoplasm includes everything between the plasma membrane and nucleus of a cell.

Which structure is not associated with the secretion of proteins produced by ER?

Chemiosmosis

Complete each of the following statments. The metabolism of acetyl CoA into the citric acid cycle depends on the presence of ____________________ gas in the mitochondrion.

The Golgi complex is functionally connected to the ER.

Cristae are found in the

Complete each of the following statments. Enzymes referred to as ____________________ enzymes use O2 to strip hydrogen from organic molecules.

Which of the following may help transport ribosomal subunits out of the nucleus?

DNA in the nucleus has the genetic instructions to make enzymatic proteins.

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

Complete each of the following statments. Enzymes referred to as ____________________ enzymes use O₂ to strip hydrogen from organic molecules.