Question 1

According to the Nernst equation, the equilibrium potential for a given ion decreases as the difference in concentration of the ion outside and inside the cell increases.

Accepted Answer

A) True 
 B)False

Question 2

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins; hence, glucose in the urine is considered abnormal.Which of these conditions can result in glucose in the urine

Accepted Answer

A) low levels of glucose in the blood 
B) transport maximum for renal glucose reached or competitors for glucose carriers 
C) low consumption of glucose 
D) increased availability of glucose carriers 
A) low levels of glucose in the blood 
B) transport maximum for renal glucose reached or competitors for glucose carriers 
C) low consumption of glucose 
D) increased availability of glucose carriers

Question 3

What is the resting membrane potential of a typical nerve cell

Accepted Answer

A) +70 mV 
B) +50 mV 
C) -50 mV 
D) -70 mV 
A) +70 mV 
B) +50 mV 
C) -50 mV 
D) -70 mV

Question 4

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.)
-one continuous extensive organelle consisting of a network of tubules and flattened filament

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 5

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

Accepted Answer

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

Question 6

Foreign material to be attacked by lysosomal enzymes is brought into the cell by the process of ____________________.

Accepted Answer

The answer of Foreign material to be attacked by lysosomal...

Question 7

What accounts for the most ATP production

Accepted Answer

A) Krebs cycle 
B) citric acid cycle 
C) NADH 
D) electron transport and oxidative phosphorylation 
A) Krebs cycle 
B) citric acid cycle 
C) NADH 
D) electron transport and oxidative phosphorylation

Question 8

Which of these statements describes when spatial summation occurs in a postsynaptic neuron

Accepted Answer

A) when several EPSPs from a single presynaptic input sum to reach threshold 
B) when EPSPs from several presynaptic inputs sum to reach threshold 
C) upon simultaneous interaction of an EPSP and an IPSP 
D) when several IPSPs from a single presynaptic input sum to hyperpolarize the membrane 
A) when several EPSPs from a single presynaptic input sum to reach threshold 
B) when EPSPs from several presynaptic inputs sum to reach threshold 
C) upon simultaneous interaction of an EPSP and an IPSP 
D) when several IPSPs from a single presynaptic input sum to hyperpolarize the membrane

Question 9

During the resting potential, many potassium channels are open in the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 10

Match the terms, labelled a. through c., to their descriptions. (Options may be used more than once or not at all.)
-increase the surface area of the small intestine's epithelium

Accepted Answer

A) flagella 
B) cilia 
C) microvilli 
A) flagella 
B) cilia 
C) microvilli

Question 11

Describe the structure and function of cilia and flagella.

Accepted Answer

Cilia and flagella are both hair-like st

Question 12

Which of these statements describes the electrical gradient for K⁺

Accepted Answer

A) It favours the movement of K⁺ out of the cell at resting potential. 
B) It favours the movement of K⁺ into the cell at resting potential. 
C) It favours the concentration gradient for K⁺ at the equilibrium potential for K⁺. 
D) The larger the electrical gradient, the less the equilibrium potential is. 
A) It favours the movement of K⁺ out of the cell at resting potential. 
B) It favours the movement of K⁺ into the cell at resting potential. 
C) It favours the concentration gradient for K⁺ at the equilibrium potential for K⁺. 
D) The larger the electrical gradient, the less the equilibrium potential is.

Question 13

Presynaptic facilitation results from which of the following

Accepted Answer

A) alteration of calcium permeability 
B) continued EPSP generations 
C) neuromodulator effects 
D) increased neurotransmitter production 
A) alteration of calcium permeability 
B) continued EPSP generations 
C) neuromodulator effects 
D) increased neurotransmitter production

Question 14

Which of these statements describes the action potential

Accepted Answer

A) It has an all-or-none characteristic. 
B) It has no refractory period. 
C) It is triggered by repolarization to threshold. 
D) It speeds transmission by any type of summation. 
A) It has an all-or-none characteristic. 
B) It has no refractory period. 
C) It is triggered by repolarization to threshold. 
D) It speeds transmission by any type of summation.

Question 15

The falling phase of the action potential is due to which of these conditions

Accepted Answer

A) calcium equilibrium 
B) potassium efflux 
C) potassium influx 
D) sodium efflux 
A) calcium equilibrium 
B) potassium efflux 
C) potassium influx 
D) sodium efflux

Question 16

Neurotransmitters do not always bind to receptors attached to ion channels.

Accepted Answer

A) True 
 B)False

Question 17

At the equilibrium potential for K⁺, the concentration and electrical gradients for K⁺ are in opposition to each other and exactly balance each other so there is no net movement of K⁺.

Accepted Answer

A) True 
 B)False

Question 18

Which of these statements describes carrier-mediated transport

Accepted Answer

A) It involves a specific membrane protein that serves as a carrier molecule. 
B) It always transports substances against a concentration gradient. 
C) It always requires energy expenditure. 
D) It always transports substances along a concentration gradient. 
A) It involves a specific membrane protein that serves as a carrier molecule. 
B) It always transports substances against a concentration gradient. 
C) It always requires energy expenditure. 
D) It always transports substances along a concentration gradient.

Question 19

The following questions refer to comparative concentrations, permeabilities, and potentials under various circumstances. Match the relationship between the two items, A. and B.., with the qualifications labelled a. through c. (Options may be used more than once or not at all.)
-a.concentration of A- in the extracellular fluid
B.concentration of A- in the intracellular fluid of a resting nerve cell

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Question 20

Which of these statements applies to lysosomes

Accepted Answer

A) They contain powerful hydrolytic enzymes. 
B) They generate hydrogen peroxide. 
C) They facilitate intracellular reactions. 
D) They store excess nutrients. 
A) They contain powerful hydrolytic enzymes. 
B) They generate hydrogen peroxide. 
C) They facilitate intracellular reactions. 
D) They store excess nutrients.

According to the Nernst equation, the equilibrium potential for a given ion decreases as the difference in concentration of the ion outside and inside the cell increases.

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins; hence, glucose in the urine is considered abnormal.Which of these conditions can result in glucose in the urine

What is the resting membrane potential of a typical nerve cell

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.) -one continuous extensive organelle consisting of a network of tubules and flattened filament

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

Foreign material to be attacked by lysosomal enzymes is brought into the cell by the process of ____________________.

What accounts for the most ATP production

Which of these statements describes when spatial summation occurs in a postsynaptic neuron

During the resting potential, many potassium channels are open in the plasma membrane.

Match the terms, labelled a. through c., to their descriptions. (Options may be used more than once or not at all.) -increase the surface area of the small intestine's epithelium

Describe the structure and function of cilia and flagella.

Which of these statements describes the electrical gradient for K⁺

Presynaptic facilitation results from which of the following

Which of these statements describes the action potential

The falling phase of the action potential is due to which of these conditions

Neurotransmitters do not always bind to receptors attached to ion channels.

At the equilibrium potential for K⁺, the concentration and electrical gradients for K⁺ are in opposition to each other and exactly balance each other so there is no net movement of K⁺.

Which of these statements describes carrier-mediated transport

Which of these statements applies to lysosomes

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

According to the Nernst equation, the equilibrium potential for a given ion decreases as the difference in concentration of the ion outside and inside the cell increases.

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins; hence, glucose in the urine is considered abnormal.Which of these conditions can result in glucose in the urine

What is the resting membrane potential of a typical nerve cell

Match the terms, labelled a. through i., to their descriptions. (Options may be used more than once or not at all.) -one continuous extensive organelle consisting of a network of tubules and flattened filament

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

Foreign material to be attacked by lysosomal enzymes is brought into the cell by the process of ____________________.

What accounts for the most ATP production

Which of these statements describes when spatial summation occurs in a postsynaptic neuron

During the resting potential, many potassium channels are open in the plasma membrane.

Match the terms, labelled a. through c., to their descriptions. (Options may be used more than once or not at all.) -increase the surface area of the small intestine's epithelium

Describe the structure and function of cilia and flagella.

Which of these statements describes the electrical gradient for K⁺

Presynaptic facilitation results from which of the following

Which of these statements describes the action potential

The falling phase of the action potential is due to which of these conditions

Neurotransmitters do not always bind to receptors attached to ion channels.

At the equilibrium potential for K⁺, the concentration and electrical gradients for K⁺ are in opposition to each other and exactly balance each other so there is no net movement of K⁺.

Which of these statements describes carrier-mediated transport

Which of these statements applies to lysosomes

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