Question 1

The three catalytic sites of ATP synthase ___________.

Accepted Answer

A) have different substrate binding affinities 
B) have different product binding affinities 
C) at any one time are present in different conformations 
D) pass sequentially through their three different conformations 
E) all of these are correct 
A) have different substrate binding affinities 
B) have different product binding affinities 
C) at any one time are present in different conformations 
D) pass sequentially through their three different conformations 
E) all of these are correct

Question 2

How do respiratory poisons such as carbon monoxide and cyanide exert their effect?

Accepted Answer

A) They break down oxygen. 
B) They bind to electrons. 
C) They bind to the cytochrome oxidase catalytic site. 
D) They bind to oxygen. 
E) They denature the inner mitochondrial membrane. 
A) They break down oxygen. 
B) They bind to electrons. 
C) They bind to the cytochrome oxidase catalytic site. 
D) They bind to oxygen. 
E) They denature the inner mitochondrial membrane.

Question 3

A pulse oximeter has all of the characteristics detailed below EXCEPT:

Accepted Answer

A) two light emitting diodes, one emitting at 660 nm and one at 900 nm 
B) measurement of light transmission at two wavelengths permits evaluation of the proportion of hemoglobin molecules which are carrying oxygen 
C) the oximeter can be easily attached to a finger or earlobe 
D) skin thickness and pigmentation do not influence the accuracy of the data derived from the oximeter 
A) two light emitting diodes, one emitting at 660 nm and one at 900 nm 
B) measurement of light transmission at two wavelengths permits evaluation of the proportion of hemoglobin molecules which are carrying oxygen 
C) the oximeter can be easily attached to a finger or earlobe 
D) skin thickness and pigmentation do not influence the accuracy of the data derived from the oximeter

Question 4

What type of electron carrier has a prosthetic group derived from riboflavin?

Accepted Answer

A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins 
A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins

Question 5

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Accepted Answer

A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) chloroplasts 
A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) chloroplasts

Question 6

Which activity below is NOT thought to be driven by the proton-motive force?

Accepted Answer

A) formation of the spindle 
B) ADP and inorganic phosphate uptake into the mitochondrion in exchange for ATP and H+, respectively 
C) uptake of Ca2+ ions into the mitochondrion 
D) the events of mitochondrial fusion 
E) uptake of specifically targeted proteins into the mitochondrion from the matrix 
A) formation of the spindle 
B) ADP and inorganic phosphate uptake into the mitochondrion in exchange for ATP and H+, respectively 
C) uptake of Ca2+ ions into the mitochondrion 
D) the events of mitochondrial fusion 
E) uptake of specifically targeted proteins into the mitochondrion from the matrix

Question 7

Which statement regarding the Clark-type transcutaneous oxygen sensor is INCORRECT?

Accepted Answer

A) An electrode is placed on the patient's skin to allow oxygen diffusion from the bloodstream into the electrode. 
B) Oxygen movement through the electrode is assisted by using a small heating element. 
C) The sensor works better on adult patients than young babies. 
D) The skin of adults is less permeable to oxygen. 
A) An electrode is placed on the patient's skin to allow oxygen diffusion from the bloodstream into the electrode. 
B) Oxygen movement through the electrode is assisted by using a small heating element. 
C) The sensor works better on adult patients than young babies. 
D) The skin of adults is less permeable to oxygen.

Question 8

Which region of the brain has been shown to suffer an increased mutation rate in patients with Parkinson's disease, according to some studies?

Accepted Answer

A) cerebral cortex 
B) olfactory lobe 
C) cerebellum 
D) substantia nigra 
A) cerebral cortex 
B) olfactory lobe 
C) cerebellum 
D) substantia nigra

Question 9

What is the purpose of uncoupling proteins in mammalian brown adipose tissue?

Accepted Answer

A) They give the tissue its color. 
B) They help the tissue expand and contract when needed. 
C) They function as a source of heat production during exposure to cold temperatures. 
D) They allow the production of a larger number of ATPs per glucose. 
E) They allow muscles to contract more efficiently. 
A) They give the tissue its color. 
B) They help the tissue expand and contract when needed. 
C) They function as a source of heat production during exposure to cold temperatures. 
D) They allow the production of a larger number of ATPs per glucose. 
E) They allow muscles to contract more efficiently.

Question 10

Of the five types of electron carriers, which accept and donate electrons only? (Select all correct choices)

Accepted Answer

A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins 
A) flavoproteins 
B) cytochromes 
C) copper atom containing carriers 
D) ubiquinone 
E) iron-sulfur proteins

Question 11

X-linked adrenoleukodystropy is a condition with all of the following characteristics EXCEPT:

Accepted Answer

A) onset in mid-childhood 
B) abnormal functioning of a mitochondrial enzyme 
C) symptoms including adrenal gland failure and neurological disorders 
D) defects in the transportation of very long chain fatty acids 
A) onset in mid-childhood 
B) abnormal functioning of a mitochondrial enzyme 
C) symptoms including adrenal gland failure and neurological disorders 
D) defects in the transportation of very long chain fatty acids

Question 12

What is defined as a domain of the inner mitochondrial membrane that is present within the interior of the mitochondrion as a series of invaginated membranous sheets?

Accepted Answer

A) inner boundary membrane 
B) outer boundary membrane 
C) cristae 
D) matrix 
E) pseudopodia 
A) inner boundary membrane 
B) outer boundary membrane 
C) cristae 
D) matrix 
E) pseudopodia

Question 13

Which molecule below plays a key role in regulating the rate of glycolysis and Krebs cycle by regulating the activity of key enzymes?

Accepted Answer

A) ADP 
B) inorganic phosphate 
C) ATP 
D) molecular oxygen 
E) gaseous nitrogen 
A) ADP 
B) inorganic phosphate 
C) ATP 
D) molecular oxygen 
E) gaseous nitrogen

Question 14

A plant seedling is stated to convert stored fatty acids into carbohydrates using the glyoxylate cycle. Based upon the brief description provided in Section 5.8, which other metabolic pathway does the glyoxylate cycle resemble in terms of its substrates?

Accepted Answer

A) glycolysis 
B) electron-transport chain 
C) Krebs cycle 
D) fermentation 
A) glycolysis 
B) electron-transport chain 
C) Krebs cycle 
D) fermentation

Question 15

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Accepted Answer

A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) lysosomes 
A) mitochondria 
B) glyoxysomes 
C) peroxisomes 
D) lysosomes

Question 16

Why might large aggregates of mitochondria be located in the muscle cells of individuals with ragged red fiber disease?

Accepted Answer

A) the poorly functioning organelles proliferate in an attempt to meet cellular energy needs, just as they would for an athlete in training 
B) the abnormal mitochondria are using all ATP they produce to replicate at an abnormally high rate 
C) the mitochondria are excessively fragile and are damaged during biopsy, so that counting reveals an unrealistic assessment of their numbers 
D) all choices are implausible 
A) the poorly functioning organelles proliferate in an attempt to meet cellular energy needs, just as they would for an athlete in training 
B) the abnormal mitochondria are using all ATP they produce to replicate at an abnormally high rate 
C) the mitochondria are excessively fragile and are damaged during biopsy, so that counting reveals an unrealistic assessment of their numbers 
D) all choices are implausible

Question 17

If an individual has an inherited mitochondrial gene mutation, from which parental source did it originate? (Select all correct choices)

Accepted Answer

A) paternally derived nuclear chromosome 
B) maternally derived nuclear chromosome 
C) paternally derived mitochondrial gene 
D) maternally derived mitochondrial gene 
A) paternally derived nuclear chromosome 
B) maternally derived nuclear chromosome 
C) paternally derived mitochondrial gene 
D) maternally derived mitochondrial gene

Question 18

What energy source other than ATP hydrolysis do mitochondria, unlike most other organelles, routinely use to power their activities?

Accepted Answer

A) ADP hydrolysis 
B) proton-motive force 
C) Na+ ion gradient 
D) K+ ion gradient 
E) Ca2+ gradient 
A) ADP hydrolysis 
B) proton-motive force 
C) Na+ ion gradient 
D) K+ ion gradient 
E) Ca2+ gradient

Question 19

What is the terminal electron acceptor of the electron-transport chain in cells undergoing aerobic respiration?

Accepted Answer

A) water 
B) O2 
C) CO2 
D) CO 
E) glucose 
A) water 
B) O2 
C) CO2 
D) CO 
E) glucose

Question 20

Mitochondria are sites of the __________.

Accepted Answer

A) synthesis of certain amino acids 
B) synthesis of heme groups 
C) uptake of Ca2+ ions 
D) release of Ca2+ ions 
E) all of these are correct 
A) synthesis of certain amino acids 
B) synthesis of heme groups 
C) uptake of Ca2+ ions 
D) release of Ca2+ ions 
E) all of these are correct

The three catalytic sites of ATP synthase ___________.

How do respiratory poisons such as carbon monoxide and cyanide exert their effect?

A pulse oximeter has all of the characteristics detailed below EXCEPT:

What type of electron carrier has a prosthetic group derived from riboflavin?

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Which activity below is NOT thought to be driven by the proton-motive force?

Which statement regarding the Clark-type transcutaneous oxygen sensor is INCORRECT?

Which region of the brain has been shown to suffer an increased mutation rate in patients with Parkinson's disease, according to some studies?

What is the purpose of uncoupling proteins in mammalian brown adipose tissue?

Of the five types of electron carriers, which accept and donate electrons only? (Select all correct choices)

X-linked adrenoleukodystropy is a condition with all of the following characteristics EXCEPT:

What is defined as a domain of the inner mitochondrial membrane that is present within the interior of the mitochondrion as a series of invaginated membranous sheets?

Which molecule below plays a key role in regulating the rate of glycolysis and Krebs cycle by regulating the activity of key enzymes?

A plant seedling is stated to convert stored fatty acids into carbohydrates using the glyoxylate cycle. Based upon the brief description provided in Section 5.8, which other metabolic pathway does the glyoxylate cycle resemble in terms of its substrates?

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Why might large aggregates of mitochondria be located in the muscle cells of individuals with ragged red fiber disease?

If an individual has an inherited mitochondrial gene mutation, from which parental source did it originate? (Select all correct choices)

What energy source other than ATP hydrolysis do mitochondria, unlike most other organelles, routinely use to power their activities?

What is the terminal electron acceptor of the electron-transport chain in cells undergoing aerobic respiration?

Mitochondria are sites of the __________.

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 5: Aerobic Respiration and the Mitochondrion

The three catalytic sites of ATP synthase ___________.

How do respiratory poisons such as carbon monoxide and cyanide exert their effect?

A pulse oximeter has all of the characteristics detailed below EXCEPT:

What type of electron carrier has a prosthetic group derived from riboflavin?

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Which activity below is NOT thought to be driven by the proton-motive force?

Which statement regarding the Clark-type transcutaneous oxygen sensor is INCORRECT?

Which region of the brain has been shown to suffer an increased mutation rate in patients with Parkinson's disease, according to some studies?

What is the purpose of uncoupling proteins in mammalian brown adipose tissue?

Of the five types of electron carriers, which accept and donate electrons only? (Select all correct choices)

X-linked adrenoleukodystropy is a condition with all of the following characteristics EXCEPT:

What is defined as a domain of the inner mitochondrial membrane that is present within the interior of the mitochondrion as a series of invaginated membranous sheets?

Which molecule below plays a key role in regulating the rate of glycolysis and Krebs cycle by regulating the activity of key enzymes?

A plant seedling is stated to convert stored fatty acids into carbohydrates using the glyoxylate cycle. Based upon the brief description provided in Section 5.8, which other metabolic pathway does the glyoxylate cycle resemble in terms of its substrates?

Which organelle(s)have been found to contain catalase? (Select all correct choices)

Why might large aggregates of mitochondria be located in the muscle cells of individuals with ragged red fiber disease?

If an individual has an inherited mitochondrial gene mutation, from which parental source did it originate? (Select all correct choices)

What energy source other than ATP hydrolysis do mitochondria, unlike most other organelles, routinely use to power their activities?

What is the terminal electron acceptor of the electron-transport chain in cells undergoing aerobic respiration?

Mitochondria are sites of the __________.

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters