Question 1

Which of the following describes graded potentials

Accepted Answer

A) They are local changes in membrane potential that occur as all or none. 
B) They serve as short-distance signals. 
C) They serve as long-distance signals. 
D) They are generated after action potential. 
A) They are local changes in membrane potential that occur as all or none. 
B) They serve as short-distance signals. 
C) They serve as long-distance signals. 
D) They are generated after action potential.

Question 2

A recording electrode is placed into a nerve cell to measure the membrane potential at a particular point.When the physiologist glances at the recording and sees that the membrane at that instant has a potential of +15 mV, she knows that the portion of the membrane being recorded is which of the following

Accepted Answer

A) in the normal resting state 
B) in the reversal phase of an action potential 
C) more permeable to Ca²⁺ than normal 
D) in the after hyperpolarization phase of an action potential 
A) in the normal resting state 
B) in the reversal phase of an action potential 
C) more permeable to Ca²⁺ than normal 
D) in the after hyperpolarization phase of an action potential

Question 3

Match the terms, labelled a. through d., to their descriptions. (Options may be used more than once or not at all.)
-consist of actin

Accepted Answer

A) microtubules 
B) microfilaments 
C) intermediate filaments 
D) micro trabecular lattice 
A) microtubules 
B) microfilaments 
C) intermediate filaments 
D) micro trabecular lattice

Question 4

Which of these components is NOT always found in a typical human cell

Accepted Answer

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

Question 5

During the relative refractory period, a neuron is completely refractory and no response to any kind of stimulus

Accepted Answer

A) True 
 B)False

Question 6

Describe the major aspects of the cytoskeleton.

Accepted Answer

The answer of Describe the major aspects of the cytoskeleton....

Question 7

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.)
-ion that is actively transported out of the cell

Accepted Answer

A) Na+ 
B) K⁺ 
C) A- 
D) Cl- 
A) Na+ 
B) K⁺ 
C) A- 
D) Cl-

Question 8

Nerve and muscle cells establish resting membrane potentials.

Accepted Answer

A) True 
 B)False

Question 9

Facilitated diffusion is passive and does not require energy.

Accepted Answer

A) True 
 B)False

Question 10

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.)
-low yield of ATP

Accepted Answer

A) glycolysis 
B) citric acid cycle 
C) oxidative phosphorylation 
A) glycolysis 
B) citric acid cycle 
C) oxidative phosphorylation

Question 11

Sheets of epithelial cells are joined by gap junctions.

Accepted Answer

A) True 
 B)False

Question 12

Change of a resting potential from -70 mV to a more positive charge until it reaches a critical level known as _________________________.

Accepted Answer

A) polarizing action 
B) electrical action 
C) depolarizing potential 
D) threshold potential 
A) polarizing action 
B) electrical action 
C) depolarizing potential 
D) threshold potential

Question 13

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.)
-removes unwanted cellular debris and foreign material

Accepted Answer

A) endoplasmic reticulum (ER) 
B) Golgi complex 
C) lysosome 
D) peroxisome 
E) mitochondrion
F)vault
G)free ribosome
H)microtubule
I)microfilament 
A) endoplasmic reticulum (ER) 
B) Golgi complex 
C) lysosome 
D) peroxisome 
E) mitochondrion
F)vault
G)free ribosome
H)microtubule
I)microfilament

Question 14

Which of these statements describes the plasma membrane

Accepted Answer

A) It appears under an electron microscope as a single dark line around the cell. 
B) It is composed of a double layer of phospholipid molecules with proteins interspersed throughout the phospholipids. 
C) It separates the intravascular and extracellular fluid. 
D) It separates the intravascular and intracellular fluid. 
A) It appears under an electron microscope as a single dark line around the cell. 
B) It is composed of a double layer of phospholipid molecules with proteins interspersed throughout the phospholipids. 
C) It separates the intravascular and extracellular fluid. 
D) It separates the intravascular and intracellular fluid.

Question 15

What kind of junctions are impermeable junctions that join the lateral edges of epithelial cells near their luminal borders, thus preventing movement of materials between the cells

Accepted Answer

A) gap junctions 
B) desmosomes 
C) luminal junctions 
D) tight junctions 
A) gap junctions 
B) desmosomes 
C) luminal junctions 
D) tight junctions

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

If two similar molecules can both combine with the same carrier, the presence of one of these molecules decreases the rate of entry of the other.

Accepted Answer

A) True 
 B)False

Question 18

Which of these compounds is the carbon-based end product (chain) of glycolysis

Accepted Answer

A) NADH 
B) ATP 
C) pyruvic acid 
D) FADH₂ 
A) NADH 
B) ATP 
C) pyruvic acid 
D) FADH₂

Question 19

Cilia in the respiratory tract beat in the same direction to sweep inspired particles up and out of the airways.

Accepted Answer

A) True 
 B)False

Question 20

The ____________________, or ____________________, of a nerve cell is a single, elongated tubular process that conducts action potentials away from the cell body and eventually terminates at other cells.

Accepted Answer

axon; nerv

Which of the following describes graded potentials

Match the terms, labelled a. through d., to their descriptions. (Options may be used more than once or not at all.) -consist of actin

Which of these components is NOT always found in a typical human cell

During the relative refractory period, a neuron is completely refractory and no response to any kind of stimulus

Describe the major aspects of the cytoskeleton.

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -ion that is actively transported out of the cell

Nerve and muscle cells establish resting membrane potentials.

Facilitated diffusion is passive and does not require energy.

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.) -low yield of ATP

Sheets of epithelial cells are joined by gap junctions.

Change of a resting potential from -70 mV to a more positive charge until it reaches a critical level known as _________________________.

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.) -removes unwanted cellular debris and foreign material

Which of these statements describes the plasma membrane

What kind of junctions are impermeable junctions that join the lateral edges of epithelial cells near their luminal borders, thus preventing movement of materials between the cells

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

If two similar molecules can both combine with the same carrier, the presence of one of these molecules decreases the rate of entry of the other.

Which of these compounds is the carbon-based end product (chain) of glycolysis

Cilia in the respiratory tract beat in the same direction to sweep inspired particles up and out of the airways.

The , or , of a nerve cell is a single, elongated tubular process that conducts action potentials away from the cell body and eventually terminates at other cells.

The Foundation of Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Exam 2: Cell Physiology

Which of the following describes graded potentials

Match the terms, labelled a. through d., to their descriptions. (Options may be used more than once or not at all.) -consist of actin

Which of these components is NOT always found in a typical human cell

During the relative refractory period, a neuron is completely refractory and no response to any kind of stimulus

Describe the major aspects of the cytoskeleton.

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -ion that is actively transported out of the cell

Nerve and muscle cells establish resting membrane potentials.

Facilitated diffusion is passive and does not require energy.

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.) -low yield of ATP

Sheets of epithelial cells are joined by gap junctions.

Change of a resting potential from -70 mV to a more positive charge until it reaches a critical level known as _________________________.

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.) -removes unwanted cellular debris and foreign material

Which of these statements describes the plasma membrane

What kind of junctions are impermeable junctions that join the lateral edges of epithelial cells near their luminal borders, thus preventing movement of materials between the cells

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

If two similar molecules can both combine with the same carrier, the presence of one of these molecules decreases the rate of entry of the other.

Which of these compounds is the carbon-based end product (chain) of glycolysis

Cilia in the respiratory tract beat in the same direction to sweep inspired particles up and out of the airways.

The ____________________, or ____________________, of a nerve cell is a single, elongated tubular process that conducts action potentials away from the cell body and eventually terminates at other cells.

The Foundation of Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

The , or , of a nerve cell is a single, elongated tubular process that conducts action potentials away from the cell body and eventually terminates at other cells.