Question 1

The ____________________ refers to the maximum amount of a substance that can be transported across the plasma membrane via a carrier in a given time.

Accepted Answer

transport

Question 2

What is the universal energy currency in cells

Accepted Answer

A) ATP 
B) glucose 
C) glycogen 
D) insulin 
A) ATP 
B) glucose 
C) glycogen 
D) insulin

Question 3

Which of these statements does NOT describe plasma membrane

Accepted Answer

A) According to the fluid mosaic model of membrane structure, it consists primarily of a bilayer of mobile phospholipid molecules studded with an ever-changing mosaic pattern of proteins. 
B) In its lipid bilayer, the hydrophobic tails of the phospholipids orient toward the centre of the membrane, away from water. 
C) The protective, waterproof outer layer of skin is formed by the tough skeleton of the microtrabecular lattice that persists after the surface skin cells die. 
D) The polar ends of the phospholipid molecules within it are hydrophilic. 
A) According to the fluid mosaic model of membrane structure, it consists primarily of a bilayer of mobile phospholipid molecules studded with an ever-changing mosaic pattern of proteins. 
B) In its lipid bilayer, the hydrophobic tails of the phospholipids orient toward the centre of the membrane, away from water. 
C) The protective, waterproof outer layer of skin is formed by the tough skeleton of the microtrabecular lattice that persists after the surface skin cells die. 
D) The polar ends of the phospholipid molecules within it are hydrophilic.

Question 4

The plasma membrane is not impermeable, but it is ____________________.

Accepted Answer

The answer of The plasma membrane is not impermeable, but...

Question 5

Which of these channel types is sensitive to serotonin

Accepted Answer

A) voltage-gated 
B) chemically gated 
C) mechanically gated 
D) acoustically gated 
A) voltage-gated 
B) chemically gated 
C) mechanically gated 
D) acoustically gated

Question 6

For graded potentials, the magnitude of triggering is coded for in frequency rather than amplitude of depolarizations.

Accepted Answer

A) True 
 B)False

Question 7

Which of these statements describes the plasma membrane

Accepted Answer

A) Under a light microscope, it appears as a trilaminar structure. 
B) The carbohydrates on the outer surface serve as receptor sites for binding chemical messengers in the environment of the cell. 
C) The lipid bilayer serves as a barrier to the passage of H₂Oa.-soluble substances through the membrane. 
D) Carrier proteins shuttle back and forth across the membrane as they carry passenger molecules from one side to the other. 
A) Under a light microscope, it appears as a trilaminar structure. 
B) The carbohydrates on the outer surface serve as receptor sites for binding chemical messengers in the environment of the cell. 
C) The lipid bilayer serves as a barrier to the passage of H₂Oa.-soluble substances through the membrane. 
D) Carrier proteins shuttle back and forth across the membrane as they carry passenger molecules from one side to the other.

Question 8

Match the vesicles, labelled a. through c., with their characteristics. (Options may be used more than once or not at all.)
-originate from the Golgi complex

Accepted Answer

A) transport vesicles 
B) coated vesicles 
C) secretory vesicles 
A) transport vesicles 
B) coated vesicles 
C) secretory vesicles

Question 9

____________________ cells form myelin around neurons in the peripheral nervous system.

Accepted Answer

The answer of ____________________ cells form myelin around neurons in...

Question 10

Which of these statements describes collagen

Accepted Answer

A) It provides tensile strength. 
B) It is most abundant in tissues that must be capable of easily stretching and then recoiling. 
C) It promotes cell adhesion. 
D) It is a rubber-like protein fibre. 
A) It provides tensile strength. 
B) It is most abundant in tissues that must be capable of easily stretching and then recoiling. 
C) It promotes cell adhesion. 
D) It is a rubber-like protein fibre.

Question 11

Which of these statements does NOT apply to endocytosis

Accepted Answer

A) provides a way to add specific components to the plasma membrane 
B) phagocytosis of large multimolecular particles such as bacteria or cellular debris 
C) a particle gaining entry to the interior of the cell without actually passing through the plasma membrane 
D) can be triggered by the binding of a particle to a receptor site on the plasma membrane 
A) provides a way to add specific components to the plasma membrane 
B) phagocytosis of large multimolecular particles such as bacteria or cellular debris 
C) a particle gaining entry to the interior of the cell without actually passing through the plasma membrane 
D) can be triggered by the binding of a particle to a receptor site on the plasma membrane

Question 12

The binding of a neurotransmitter to inhibitory synapses increases the permeability of the subsynaptic membrane to _________________________.

Accepted Answer

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

Question 13

Which of these statements is describes neuromodulators

Accepted Answer

A) They bind to receptors at nonsynaptic sites. 
B) They contribute directly to EPSP and IPSP formation. 
C) They may influence neurotransmitter production. 
D) They directly alter membrane permeability. 
A) They bind to receptors at nonsynaptic sites. 
B) They contribute directly to EPSP and IPSP formation. 
C) They may influence neurotransmitter production. 
D) They directly alter membrane permeability.

Question 14

Because a solution of lower solute concentration has a higher concentration of water, it exerts a lower osmotic pressure than does a solution with a higher solute concentration.

Accepted Answer

A) True 
 B)False

Question 15

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.)
-ion whose equilibrium potential is exactly equal to the resting membrane potential

Accepted Answer

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

Question 16

Which of these statements refers to IPSP

Accepted Answer

A) It is produced by increased Na⁺ permeability and K⁺ permeability. 
B) It is produced by increased K⁺ permeability or increased Cl- permeability. 
C) It is a small depolarization of the postsynaptic neuron. 
D) It is produced by increased Na⁺ permeability only. 
A) It is produced by increased Na⁺ permeability and K⁺ permeability. 
B) It is produced by increased K⁺ permeability or increased Cl- permeability. 
C) It is a small depolarization of the postsynaptic neuron. 
D) It is produced by increased Na⁺ permeability only.

Question 17

Which of these statements applies to membrane potential

Accepted Answer

A) It refers to a separation of charges across the membrane, or to a difference in the relative numbers of + and - charges in the ECF and the ICF. 
B) It is measured in units of millivolts, with the sign always designating the charge on the outside. 
C) It is less at the equilibrium potential for K⁺ than at resting membrane potential. 
D) It refers to the presence of K⁺ inside the cell. 
A) It refers to a separation of charges across the membrane, or to a difference in the relative numbers of + and - charges in the ECF and the ICF. 
B) It is measured in units of millivolts, with the sign always designating the charge on the outside. 
C) It is less at the equilibrium potential for K⁺ than at resting membrane potential. 
D) It refers to the presence of K⁺ inside the cell.

Question 18

Presynaptic neurons converging upon a postsynaptic cell will be either all excitatory or all inhibitory.

Accepted Answer

A) True 
 B)False

Question 19

Temporal summation occurs when EPSPs from several different excitatory presynaptic inputs occur simultaneously.

Accepted Answer

A) True 
 B)False

Question 20

Which of these statements does NOT apply to microfilaments

Accepted Answer

A) They serve as mechanical stiffeners for microvilli. 
B) They are composed of actin subunits. 
C) They are the smallest elements of the cytoskeleton. 
D) They form mitotic spindles. 
A) They serve as mechanical stiffeners for microvilli. 
B) They are composed of actin subunits. 
C) They are the smallest elements of the cytoskeleton. 
D) They form mitotic spindles.

The ____________________ refers to the maximum amount of a substance that can be transported across the plasma membrane via a carrier in a given time.

What is the universal energy currency in cells

Which of these statements does NOT describe plasma membrane

The plasma membrane is not impermeable, but it is ____________________.

Which of these channel types is sensitive to serotonin

For graded potentials, the magnitude of triggering is coded for in frequency rather than amplitude of depolarizations.

Which of these statements describes the plasma membrane

Match the vesicles, labelled a. through c., with their characteristics. (Options may be used more than once or not at all.) -originate from the Golgi complex

____________________ cells form myelin around neurons in the peripheral nervous system.

Which of these statements describes collagen

Which of these statements does NOT apply to endocytosis

The binding of a neurotransmitter to inhibitory synapses increases the permeability of the subsynaptic membrane to _________________________.

Which of these statements is describes neuromodulators

Because a solution of lower solute concentration has a higher concentration of water, it exerts a lower osmotic pressure than does a solution with a higher solute concentration.

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -ion whose equilibrium potential is exactly equal to the resting membrane potential

Which of these statements refers to IPSP

Which of these statements applies to membrane potential

Presynaptic neurons converging upon a postsynaptic cell will be either all excitatory or all inhibitory.

Temporal summation occurs when EPSPs from several different excitatory presynaptic inputs occur simultaneously.

Which of these statements does NOT apply to microfilaments

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

The ____________________ refers to the maximum amount of a substance that can be transported across the plasma membrane via a carrier in a given time.

What is the universal energy currency in cells

Which of these statements does NOT describe plasma membrane

The plasma membrane is not impermeable, but it is ____________________.

Which of these channel types is sensitive to serotonin

For graded potentials, the magnitude of triggering is coded for in frequency rather than amplitude of depolarizations.

Which of these statements describes the plasma membrane

Match the vesicles, labelled a. through c., with their characteristics. (Options may be used more than once or not at all.) -originate from the Golgi complex

____________________ cells form myelin around neurons in the peripheral nervous system.

Which of these statements describes collagen

Which of these statements does NOT apply to endocytosis

The binding of a neurotransmitter to inhibitory synapses increases the permeability of the subsynaptic membrane to _________________________.

Which of these statements is describes neuromodulators

Because a solution of lower solute concentration has a higher concentration of water, it exerts a lower osmotic pressure than does a solution with a higher solute concentration.

Match the ions, labelled a. through d., with their various roles. (Options may be used more than once or not at all.) -ion whose equilibrium potential is exactly equal to the resting membrane potential

Which of these statements refers to IPSP

Which of these statements applies to membrane potential

Presynaptic neurons converging upon a postsynaptic cell will be either all excitatory or all inhibitory.

Temporal summation occurs when EPSPs from several different excitatory presynaptic inputs occur simultaneously.

Which of these statements does NOT apply to microfilaments

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