Question 1

Which of the following statements is false regarding phagocytosis?

Accepted Answer

A) It involves ingestion of large particles by the cell. 
B) It involves the projection of pseudopodia. 
C) It is a method used predominantly by amoeba to obtain food. 
D) It is mediated by clathrin at the plasma membrane. 
E) In vertebrates, macrophages and neutrophils possess this ability. 
A) It involves ingestion of large particles by the cell. 
B) It involves the projection of pseudopodia. 
C) It is a method used predominantly by amoeba to obtain food. 
D) It is mediated by clathrin at the plasma membrane. 
E) In vertebrates, macrophages and neutrophils possess this ability.

Question 2

Match between columns
                        Premises: tethering protein
smooth endoplasmic reticulum
mannose-6-phosphate
glyoxysomes
shuttle vesicle
Golgi apparatus
lysosomes
transition vesicle
peroxisomes
secretory vesicle

Accepted Answer

The Answer of transport from Golgi to plasma membrane and is...

Question 3

Microsomes are

Accepted Answer

A) too small to be seen with an electron microscope. 
B) artifacts generated during homogenization of cells. 
C) organelles through which electrons cannot pass. 
D) organelles of eukaryotic cells. 
E) structures observed in cyanobacteria. 
A) too small to be seen with an electron microscope. 
B) artifacts generated during homogenization of cells. 
C) organelles through which electrons cannot pass. 
D) organelles of eukaryotic cells. 
E) structures observed in cyanobacteria.

Question 4

Pharmacogenetics is a new field of study that arose from the study of

Accepted Answer

A) cholesterol uptake. 
B) mixed-function oxidases. 
C) ATP-dependent calcium ATPases. 
D) phagocytosis by specifically vertebrate white blood cells. 
E) residual bodies. 
A) cholesterol uptake. 
B) mixed-function oxidases. 
C) ATP-dependent calcium ATPases. 
D) phagocytosis by specifically vertebrate white blood cells. 
E) residual bodies.

Question 5

Which of the following molecules stabilizes the cell membrane during coated pit formation?

Accepted Answer

A) mannose-6-phosphate 
B) KDEL signals 
C) clatherin 
D) botulinum toxin 
E) stabilin 
A) mannose-6-phosphate 
B) KDEL signals 
C) clatherin 
D) botulinum toxin 
E) stabilin

Question 6

________ act as proton pumps and keep the internal proton concentration of lysosomes high.

Accepted Answer

The answer of ________ act as proton pumps and keep...

Question 7

Which of the following organelles is associated with the ability to catabolize alkanes found in oil and petroleum products?

Accepted Answer

A) mitochondria 
B) smooth endoplasmic reticulum 
C) peroxisomes 
D) lysosomes 
E) all of the above 
A) mitochondria 
B) smooth endoplasmic reticulum 
C) peroxisomes 
D) lysosomes 
E) all of the above

Question 8

In a longitudinal section of a nerve cell,at the presynaptic site you note a variety of vesicles that are anchored to the plasma membrane.The vesicles must be specialized for

Accepted Answer

A) constitutive secretion. 
B) regulated secretion. 
C) polarized secretion. 
D) zymogen secretion. 
E) none of the above 
A) constitutive secretion. 
B) regulated secretion. 
C) polarized secretion. 
D) zymogen secretion. 
E) none of the above

Question 9

During receptor-mediated endocytosis,the ultimate fate of the vesicle and/or its contents include(s)

Accepted Answer

A) transcytosis. 
B) transport to late endosome for digestion. 
C) recycling of receptors. 
D) only choices B and C 
E) choices A, B, and C 
A) transcytosis. 
B) transport to late endosome for digestion. 
C) recycling of receptors. 
D) only choices B and C 
E) choices A, B, and C

Question 10

Cells of the pancreas produce and directly release enzymes to the digestive system. The type of secretory mechanism associated with the pancreatic cells is

Accepted Answer

A) transport secretion. 
B) regulated secretion. 
C) constitutive secretion. 
D) intracellular secretion. 
E) consistent secretion. 
A) transport secretion. 
B) regulated secretion. 
C) constitutive secretion. 
D) intracellular secretion. 
E) consistent secretion.

Question 11

A protein is destined to be secreted from a cell.In which of the following organelles would you expect to find the protein first?

Accepted Answer

A) endosome 
B) Golgi apparatus 
C) lysosome 
D) secretory vesicle 
A) endosome 
B) Golgi apparatus 
C) lysosome 
D) secretory vesicle

Question 12

All of the following statements about cellular trafficking are true except

Accepted Answer

A) COPII-coated vesicles move materials from ER to Golgi. 
B) COPI-coated vesicles move materials from Golgi to the secretory vesicle. 
C) movement may be mediated by microtubules. 
D) v-SNAREs occur in vesicles; t-SNAREs occur on target sites. 
E) tethering proteins mediate docking between target and vesicle. 
A) COPII-coated vesicles move materials from ER to Golgi. 
B) COPI-coated vesicles move materials from Golgi to the secretory vesicle. 
C) movement may be mediated by microtubules. 
D) v-SNAREs occur in vesicles; t-SNAREs occur on target sites. 
E) tethering proteins mediate docking between target and vesicle.

Question 13

Lysosomal storage diseases are the result of deficiencies in lysosomal proteins.An example of one such disorder is

Accepted Answer

A) adult-onset diabetes. 
B) tuberculosis. 
C) Huntington's disease. 
D) chronic fatigue syndrome. 
E) Tay-Sachs disease. 
A) adult-onset diabetes. 
B) tuberculosis. 
C) Huntington's disease. 
D) chronic fatigue syndrome. 
E) Tay-Sachs disease.

Question 14

The investigation of the movement of proteins and lipids to their appropriate location within a cell is known as ________.

Accepted Answer

endomembra

Question 15

Of the following cell types,the greatest concentration of high-density lipoprotein (HDLs)would be associated with ________ cells.

Accepted Answer

A) skin 
B) muscle 
C) connective tissue 
D) blood 
E) liver 
A) skin 
B) muscle 
C) connective tissue 
D) blood 
E) liver

Question 16

The organelle of plant cells that is analogous to the lysosome in animal cells is the

Accepted Answer

A) vacuole. 
B) triskelion. 
C) microsome. 
D) endosome. 
E) lysosome. 
A) vacuole. 
B) triskelion. 
C) microsome. 
D) endosome. 
E) lysosome.

Question 17

In plants,peroxisomes associated with nitrogen fixation in legumes can be found in great abundance in

Accepted Answer

A) leaves. 
B) stems. 
C) phloem and xylem. 
D) cotyledons. 
E) root nodules. 
A) leaves. 
B) stems. 
C) phloem and xylem. 
D) cotyledons. 
E) root nodules.

Question 18

Coated vesicles known as ________ are thought to potentially be associated with cholesterol uptake and/or have a role in signal transduction.

Accepted Answer

The answer of Coated vesicles known as ________ are thought...

Question 19

You want to engineer a yeast cell to manufacture and secrete a bacterial protein product.To do this properly,you need to make certain that

Accepted Answer

A) the appropriate signal sequence is present. 
B) plenty of clathrin-coated pits may be formed. 
C) mannose-6-phosphate is added to the protein. 
D) the yeast cell is capable of phagocytosis. 
E) all of the above 
A) the appropriate signal sequence is present. 
B) plenty of clathrin-coated pits may be formed. 
C) mannose-6-phosphate is added to the protein. 
D) the yeast cell is capable of phagocytosis. 
E) all of the above

Question 20

You are isolating cell fractions using a variety of centrifuge techniques.You have two very similar fractions but at this point are unable to discern which fraction is peroxisomes and which is lysosomes.As a result,you need to test the fractions for unique enzyme activities.If you are looking for peroxisomes,one enzyme activity you can test for is

Accepted Answer

A) hexokinase. 
B) ATPase. 
C) glucose-6-phosphatase. 
D) cytochrome c oxidase. 
E) catalase. 
A) hexokinase. 
B) ATPase. 
C) glucose-6-phosphatase. 
D) cytochrome c oxidase. 
E) catalase.

Exam 12: The Endomembrane System and Peroxisomes

Which of the following statements is false regarding phagocytosis?

Microsomes are

Pharmacogenetics is a new field of study that arose from the study of

Which of the following molecules stabilizes the cell membrane during coated pit formation?

________ act as proton pumps and keep the internal proton concentration of lysosomes high.

Which of the following organelles is associated with the ability to catabolize alkanes found in oil and petroleum products?

In a longitudinal section of a nerve cell,at the presynaptic site you note a variety of vesicles that are anchored to the plasma membrane.The vesicles must be specialized for

During receptor-mediated endocytosis,the ultimate fate of the vesicle and/or its contents include(s)

Cells of the pancreas produce and directly release enzymes to the digestive system. The type of secretory mechanism associated with the pancreatic cells is

A protein is destined to be secreted from a cell.In which of the following organelles would you expect to find the protein first?

All of the following statements about cellular trafficking are true except

Lysosomal storage diseases are the result of deficiencies in lysosomal proteins.An example of one such disorder is

The investigation of the movement of proteins and lipids to their appropriate location within a cell is known as ________.

Of the following cell types,the greatest concentration of high-density lipoprotein (HDLs)would be associated with ________ cells.

The organelle of plant cells that is analogous to the lysosome in animal cells is the

In plants,peroxisomes associated with nitrogen fixation in legumes can be found in great abundance in

Coated vesicles known as ________ are thought to potentially be associated with cholesterol uptake and/or have a role in signal transduction.

You want to engineer a yeast cell to manufacture and secrete a bacterial protein product.To do this properly,you need to make certain that

A Preview of the Cell

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure, function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, chromosomes, and the Nucleus

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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