Question 1

If red blood cells are placed in a ____________________ solution, water leaves the cells, causing them to crenate.

Accepted Answer

The answer of If red blood cells are placed in...

Question 2

The primary barrier to passage of water-soluble substances across the plasma membrane is the outer layer of carbohydrates.

Accepted Answer

A) True 
 B)False

Question 3

Which of these statements describes the concentration gradient for Na⁺

Accepted Answer

A) It favours the movement of Na⁺ into the cell at resting potential. 
B) It favours the movement of Na⁺ out of the cell at resting potential. 
C) Na+ equilibrium potential is -90 mV. 
D) Na+ equilibrium potential is -60 mV. 
A) It favours the movement of Na⁺ into the cell at resting potential. 
B) It favours the movement of Na⁺ out of the cell at resting potential. 
C) Na+ equilibrium potential is -90 mV. 
D) Na+ equilibrium potential is -60 mV.

Question 4

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.)
-cation in greatest concentration in the ECF

Accepted Answer

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

Question 5

The cells of excitable and nonexcitable tissues share which one of these properties

Accepted Answer

A) a threshold potential 
B) a resting membrane potential 
C) an ability to open the Na⁺ gates 
D) an ability to open the K⁺ gates 
A) a threshold potential 
B) a resting membrane potential 
C) an ability to open the Na⁺ gates 
D) an ability to open the K⁺ gates

Question 6

Pinocytosis, or "cell drinking," refers to the process of a cell engulfing a large, solid particle and bringing it into the contents of the cell.

Accepted Answer

A) True 
 B)False

Question 7

Which of these substances promotes cell adhesion

Accepted Answer

A) calmodulin 
B) collagen 
C) elastin 
D) fibronectin 
A) calmodulin 
B) collagen 
C) elastin 
D) fibronectin

Question 8

What is the function of ATP synthase

Accepted Answer

A) to act enzymatically 
B) to build membranes 
C) to carry hydrogen 
D) to synthesize ATP 
A) to act enzymatically 
B) to build membranes 
C) to carry hydrogen 
D) to synthesize ATP

Question 9

The stronger the stimulus, the greater the frequency of action potentials generated in a neuron.

Accepted Answer

A) True 
 B)False

Question 10

The synapse is a specialized part of a neuron.

Accepted Answer

A) True 
 B)False

Question 11

The carrier molecule actually moves from side to side through the membrane as it transports material across.

Accepted Answer

A) True 
 B)False

Question 12

____________________ is a positive ion that tends to leak into cells.

Accepted Answer

The answer of ____________________ is a positive ion that tends...

Question 13

Electrical quantities called ____________________ are gated in the plasma membrane for the development of membrane potentials.

Accepted Answer

The answer of Electrical quantities called ____________________ are gated in...

Question 14

Which of these terms best describes an excitable condition when a resting membrane potential is present

Accepted Answer

A) polarized 
B) depolarized 
C) hyperpolarized 
D) repolarized 
A) polarized 
B) depolarized 
C) hyperpolarized 
D) repolarized

Question 15

The Golgi complex is connected functionally to the ER.

Accepted Answer

A) True 
 B)False

Question 16

Which of these statements describes the plasma membrane

Accepted Answer

A) The hydrophobic interior of its lipid bilayer blocks the passage of water-soluble substances. 
B) The surface carbohydrates within it serve as cell adhesion molecules (CAMs), which cells use to grip one another and surrounding connective tissue fibres. 
C) Its outer layer of carbohydrates is the primary barrier to the passage of water-soluble substances. 
D) Sheets of epithelial cells are joined by gap junctions. 
A) The hydrophobic interior of its lipid bilayer blocks the passage of water-soluble substances. 
B) The surface carbohydrates within it serve as cell adhesion molecules (CAMs), which cells use to grip one another and surrounding connective tissue fibres. 
C) Its outer layer of carbohydrates is the primary barrier to the passage of water-soluble substances. 
D) Sheets of epithelial cells are joined by gap junctions.

Question 17

Describe some of the ways in which drugs or disease can influence the nervous system at the neuronal level.

Accepted Answer

Drugs and diseases can influence the ner

Question 18

Which of these statements describes what happens when temporal summation takes place

Accepted Answer

A) Two EPSPs from the same presynaptic input occur so closely together in time that they add together, or sum. 
B) An EPSP and an IPSP occur simultaneously and cancel each other out. 
C) Two EPSPs that occur simultaneously from different presynaptic inputs add together, or sum. 
D) Action potentials occurring in two presynaptic inputs simultaneously converge upon the postsynaptic cell, initiating two different action potentials in the postsynaptic cell. 
A) Two EPSPs from the same presynaptic input occur so closely together in time that they add together, or sum. 
B) An EPSP and an IPSP occur simultaneously and cancel each other out. 
C) Two EPSPs that occur simultaneously from different presynaptic inputs add together, or sum. 
D) Action potentials occurring in two presynaptic inputs simultaneously converge upon the postsynaptic cell, initiating two different action potentials in the postsynaptic cell.

Question 19

During the peak of the action potential, which of these ions has the greatest permeability

Accepted Answer

A) sodium 
B) potassium 
C) calcium 
D) chloride 
A) sodium 
B) potassium 
C) calcium 
D) chloride

Question 20

An action potential in a presynaptic neuron induces opening of voltage-gated ____________________ channels in the synaptic knob, which triggers exocytosis of synaptic vesicles.

Accepted Answer

The answer of An action potential in a presynaptic neuron...

If red blood cells are placed in a ____________________ solution, water leaves the cells, causing them to crenate.

The primary barrier to passage of water-soluble substances across the plasma membrane is the outer layer of carbohydrates.

Which of these statements describes the concentration gradient for Na⁺

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -cation in greatest concentration in the ECF

The cells of excitable and nonexcitable tissues share which one of these properties

Pinocytosis, or "cell drinking," refers to the process of a cell engulfing a large, solid particle and bringing it into the contents of the cell.

Which of these substances promotes cell adhesion

What is the function of ATP synthase

The stronger the stimulus, the greater the frequency of action potentials generated in a neuron.

The synapse is a specialized part of a neuron.

The carrier molecule actually moves from side to side through the membrane as it transports material across.

____________________ is a positive ion that tends to leak into cells.

Electrical quantities called ____________________ are gated in the plasma membrane for the development of membrane potentials.

Which of these terms best describes an excitable condition when a resting membrane potential is present

The Golgi complex is connected functionally to the ER.

Which of these statements describes the plasma membrane

Describe some of the ways in which drugs or disease can influence the nervous system at the neuronal level.

Which of these statements describes what happens when temporal summation takes place

During the peak of the action potential, which of these ions has the greatest permeability

An action potential in a presynaptic neuron induces opening of voltage-gated ____________________ channels in the synaptic knob, which triggers exocytosis of synaptic vesicles.

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

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Exam 2: Cell Physiology

If red blood cells are placed in a ____________________ solution, water leaves the cells, causing them to crenate.

The primary barrier to passage of water-soluble substances across the plasma membrane is the outer layer of carbohydrates.

Which of these statements describes the concentration gradient for Na⁺

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -cation in greatest concentration in the ECF

The cells of excitable and nonexcitable tissues share which one of these properties

Pinocytosis, or "cell drinking," refers to the process of a cell engulfing a large, solid particle and bringing it into the contents of the cell.

Which of these substances promotes cell adhesion

What is the function of ATP synthase

The stronger the stimulus, the greater the frequency of action potentials generated in a neuron.

The synapse is a specialized part of a neuron.

The carrier molecule actually moves from side to side through the membrane as it transports material across.

____________________ is a positive ion that tends to leak into cells.

Electrical quantities called ____________________ are gated in the plasma membrane for the development of membrane potentials.

Which of these terms best describes an excitable condition when a resting membrane potential is present

The Golgi complex is connected functionally to the ER.

Which of these statements describes the plasma membrane

Describe some of the ways in which drugs or disease can influence the nervous system at the neuronal level.

Which of these statements describes what happens when temporal summation takes place

During the peak of the action potential, which of these ions has the greatest permeability

An action potential in a presynaptic neuron induces opening of voltage-gated ____________________ channels in the synaptic knob, which triggers exocytosis of synaptic vesicles.

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