Question 1

In terms of its role in the generation of metabolic energy, the thylakoid membrane of chloroplasts is equivalent to the _______ of mitochondria.

Accepted Answer

The answer of In terms of its role in the...

Question 2

Chloroplasts have three membranes: the inner membrane, the outer membrane, and the _______ membrane.

Accepted Answer

The answer of Chloroplasts have three membranes: the inner membrane,...

Question 3

Mitochondria differ from other organelles such as lysosomes and the Golgi apparatus in that they

Accepted Answer

A)  contain enzymes specific to their function. 
B)  contain their own genomes. 
C)  do not contain proteins that are imported from the cytosol. 
D)  are not membrane-bounded. 
A)  contain enzymes specific to their function. 
B)  contain their own genomes. 
C)  do not contain proteins that are imported from the cytosol. 
D)  are not membrane-bounded.

Question 4

Mitochondrial phospholipids are delivered to mitochondria by phospholipid transfer proteins.

Accepted Answer

A) True 
 B)False

Question 5

Both mitochondria and chloroplasts use a proton gradient to drive ATP synthesis, but in different locations. What is the major structural difference, that is related to the proton gradient, between mitochondria and chloroplasts, and where is ATP generated in each?

Accepted Answer

The major structural difference is that

Question 6

Peroxisomes are not involved in

Accepted Answer

A)  the biosynthesis of plasmalogens. 
B)  the biosynthesis of the enzyme catalase, which breaks down hydrogen peroxide. 
C)  the biosynthesis of lipids. 
D)  oxidative reactions leading to the production of hydrogen peroxide. 
A)  the biosynthesis of plasmalogens. 
B)  the biosynthesis of the enzyme catalase, which breaks down hydrogen peroxide. 
C)  the biosynthesis of lipids. 
D)  oxidative reactions leading to the production of hydrogen peroxide.

Question 7

Mitochondria can

Accepted Answer

A)  divide by fission. 
B)  fuse with one another. 
C)  be transported to areas of high energy use. 
D)  All of the above 
A)  divide by fission. 
B)  fuse with one another. 
C)  be transported to areas of high energy use. 
D)  All of the above

Question 8

Most chloroplast proteins are synthesized on

Accepted Answer

A)  free ribosomes in the cytosol. 
B)  RER membranes in the cytoplasm. 
C)  ribosomes bound to the outer chloroplast membrane. 
D)  ribosomes in the chloroplast stroma. 
A)  free ribosomes in the cytosol. 
B)  RER membranes in the cytoplasm. 
C)  ribosomes bound to the outer chloroplast membrane. 
D)  ribosomes in the chloroplast stroma.

Question 9

Which of the following is not a protein translocon/translocase found in the mitochondrial inner or outer membrane?

Accepted Answer

A)  Oxa1 
B)  Tim23 
C)  Tom40 
D)  Toc75 
A)  Oxa1 
B)  Tim23 
C)  Tom40 
D)  Toc75

Question 10

Consider two unlabeled centrifuge tubes, each with a pellet at the bottom. One tube contains a pellet of mitochondria and the other a pellet of chloroplasts. How could the pellets be identified?

Accepted Answer

Chloroplasts are full of chlor

Question 11

In chloroplasts, the _______ pathway is related to the pathway used to translocate proteins into the endoplasmic reticulum.

Accepted Answer

The answer of In chloroplasts, the _______ pathway is related...

Question 12

Where do phospholipids, such as phosphatidylcholine and phosphatidylethanolamine in mitochondrial membranes, originate?

Accepted Answer

A)  In the ER 
B)  In the intermembrane space 
C)  On the cytosolic side of the outer membrane 
D)  On the lumenal side of the inner membrane 
A)  In the ER 
B)  In the intermembrane space 
C)  On the cytosolic side of the outer membrane 
D)  On the lumenal side of the inner membrane

Question 13

_______ different translocon systems are used for protein import from the chloroplast stroma into the thylakoid lumen or membrane.

Accepted Answer

A)  Two 
B)  Three 
C)  Five 
D)  Ten 
A)  Two 
B)  Three 
C)  Five 
D)  Ten

Question 14

To enter the mitochondria, precursors of the $\beta$-barrel proteins pass through the _______ complex into the intermembrane space; there, they are recognized and transported to a second complex, called the _______complex, and inserted into the outer membrane.

Accepted Answer

Tom; SAM (

Question 15

Some proteins destined for insertion into the inner membrane are transported from the matrix compartment.

Accepted Answer

A) True 
 B)False

Question 16

Most mitochondrial proteins are coded for by the mitochondrial genome.

Accepted Answer

A) True 
 B)False

Question 17

The citric acid cycle produces two reduced cofactors, _______ and _______.

Accepted Answer

The answer of The citric acid cycle produces two reduced...

Question 18

Chloroplasts are only one of a much larger family of plant organelles called plastids that all contain the same genome.

Accepted Answer

A) True 
 B)False

Question 19

The infoldings of the inner mitochondrial membrane are called

Accepted Answer

A)  cisternae. 
B)  cristae. 
C)  laminae. 
D)  lamellae. 
A)  cisternae. 
B)  cristae. 
C)  laminae. 
D)  lamellae.

Question 20

Peroxisomes contain the enzyme _______, which breaks down H2O2 into H2O and oxygen.

Accepted Answer

A)  peroxidase 
B)  catalase 
C)  peroxigen 
D)  glyoxylate 
A)  peroxidase 
B)  catalase 
C)  peroxigen 
D)  glyoxylate

In terms of its role in the generation of metabolic energy, the thylakoid membrane of chloroplasts is equivalent to the _______ of mitochondria.

Chloroplasts have three membranes: the inner membrane, the outer membrane, and the _______ membrane.

Mitochondria differ from other organelles such as lysosomes and the Golgi apparatus in that they

Mitochondrial phospholipids are delivered to mitochondria by phospholipid transfer proteins.

Both mitochondria and chloroplasts use a proton gradient to drive ATP synthesis, but in different locations. What is the major structural difference, that is related to the proton gradient, between mitochondria and chloroplasts, and where is ATP generated in each?

Peroxisomes are not involved in

Mitochondria can

Most chloroplast proteins are synthesized on

Which of the following is not a protein translocon/translocase found in the mitochondrial inner or outer membrane?

Consider two unlabeled centrifuge tubes, each with a pellet at the bottom. One tube contains a pellet of mitochondria and the other a pellet of chloroplasts. How could the pellets be identified?

In chloroplasts, the _______ pathway is related to the pathway used to translocate proteins into the endoplasmic reticulum.

Where do phospholipids, such as phosphatidylcholine and phosphatidylethanolamine in mitochondrial membranes, originate?

_______ different translocon systems are used for protein import from the chloroplast stroma into the thylakoid lumen or membrane.

To enter the mitochondria, precursors of the $\beta$ -barrel proteins pass through the _ complex into the intermembrane space; there, they are recognized and transported to a second complex, called the _complex, and inserted into the outer membrane.

Some proteins destined for insertion into the inner membrane are transported from the matrix compartment.

Most mitochondrial proteins are coded for by the mitochondrial genome.

The citric acid cycle produces two reduced cofactors, _ and _.

Chloroplasts are only one of a much larger family of plant organelles called plastids that all contain the same genome.

The infoldings of the inner mitochondrial membrane are called

Peroxisomes contain the enzyme _______, which breaks down H₂O₂ into H₂O and oxygen.

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

Exam 13: Mitochondria, Chloroplasts, and Peroxisomes

In terms of its role in the generation of metabolic energy, the thylakoid membrane of chloroplasts is equivalent to the _______ of mitochondria.

Chloroplasts have three membranes: the inner membrane, the outer membrane, and the _______ membrane.

Mitochondria differ from other organelles such as lysosomes and the Golgi apparatus in that they

Mitochondrial phospholipids are delivered to mitochondria by phospholipid transfer proteins.

Both mitochondria and chloroplasts use a proton gradient to drive ATP synthesis, but in different locations. What is the major structural difference, that is related to the proton gradient, between mitochondria and chloroplasts, and where is ATP generated in each?

Peroxisomes are not involved in

Mitochondria can

Most chloroplast proteins are synthesized on

Which of the following is not a protein translocon/translocase found in the mitochondrial inner or outer membrane?

Consider two unlabeled centrifuge tubes, each with a pellet at the bottom. One tube contains a pellet of mitochondria and the other a pellet of chloroplasts. How could the pellets be identified?

In chloroplasts, the _______ pathway is related to the pathway used to translocate proteins into the endoplasmic reticulum.

Where do phospholipids, such as phosphatidylcholine and phosphatidylethanolamine in mitochondrial membranes, originate?

_______ different translocon systems are used for protein import from the chloroplast stroma into the thylakoid lumen or membrane.

To enter the mitochondria, precursors of the β\betaβ -barrel proteins pass through the _______ complex into the intermembrane space; there, they are recognized and transported to a second complex, called the _______complex, and inserted into the outer membrane.

Some proteins destined for insertion into the inner membrane are transported from the matrix compartment.

Most mitochondrial proteins are coded for by the mitochondrial genome.

The citric acid cycle produces two reduced cofactors, _______ and _______.

Chloroplasts are only one of a much larger family of plant organelles called plastids that all contain the same genome.

The infoldings of the inner mitochondrial membrane are called

Peroxisomes contain the enzyme _______, which breaks down H2O2 into H2O and oxygen.

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

To enter the mitochondria, precursors of the $\beta$ -barrel proteins pass through the _ complex into the intermembrane space; there, they are recognized and transported to a second complex, called the _complex, and inserted into the outer membrane.

The citric acid cycle produces two reduced cofactors, _ and _.

Peroxisomes contain the enzyme _______, which breaks down H₂O₂ into H₂O and oxygen.