Question 1

Prions are

Accepted Answer

A) the site of protein synthesis in prokaryotic cells. 
B) simple viruses composed of protein. 
C) primitive protein particles that are believed to be an ancient precursor of living cells. 
D) infectious circular RNA molecules that replicate in host cells. 
E) infectious misfolded proteins that cause normal protein molecules to misfold. 
A) the site of protein synthesis in prokaryotic cells. 
B) simple viruses composed of protein. 
C) primitive protein particles that are believed to be an ancient precursor of living cells. 
D) infectious circular RNA molecules that replicate in host cells. 
E) infectious misfolded proteins that cause normal protein molecules to misfold.

Question 2

Which of the following processes would be most likely to occur in the Golgi complex?

Accepted Answer

A) synthesis of steroids 
B) production and packaging of lipids 
C) glycosylation of proteins 
D) synthesis of DNA 
E) detoxification of drugs 
A) synthesis of steroids 
B) production and packaging of lipids 
C) glycosylation of proteins 
D) synthesis of DNA 
E) detoxification of drugs

Question 3

Photosynthesis is to the chloroplast as ________ is to the mitochondrion.

Accepted Answer

aerobic re

Question 4

The cytosol is best described as the

Accepted Answer

A) fluid within the nucleus. 
B) three-dimensional array of interconnected filaments. 
C) semifluid substance in which organelles are suspended. 
D) internal contents of organelles. 
E) area of the cell not occupied by the nucleus. 
A) fluid within the nucleus. 
B) three-dimensional array of interconnected filaments. 
C) semifluid substance in which organelles are suspended. 
D) internal contents of organelles. 
E) area of the cell not occupied by the nucleus.

Question 5

Viruses are important in the study of cell biology because

Accepted Answer

A) they cause disease. 
B) they are the simplest form of cellular life. 
C) they are used as model organisms to study molecular biology and genetics. 
D) they cause disease and are used as model organisms to study molecular biology and genetics. 
E) they are the simplest form of cellular life and are used as model organisms to study molecular biology and genetics. 
A) they cause disease. 
B) they are the simplest form of cellular life. 
C) they are used as model organisms to study molecular biology and genetics. 
D) they cause disease and are used as model organisms to study molecular biology and genetics. 
E) they are the simplest form of cellular life and are used as model organisms to study molecular biology and genetics.

Question 6

Are viruses living organisms? Defend your answer based on the properties of life.

Accepted Answer

Answers will vary; however,the student s

Question 7

The methanobacteria,halobacteria,and sulfobacteria are included in which domain?

Accepted Answer

A) bacteria 
B) protista 
C) blue-green algae 
D) archaea 
E) eukarya 
A) bacteria 
B) protista 
C) blue-green algae 
D) archaea 
E) eukarya

Question 8

Collagen fibers are to the extracellular matrix as ________ is to the cell wall.

Accepted Answer

The answer of Collagen fibers are to the extracellular matrix...

Question 9

The hallmark feature of peroxisomal diseases is the accumulation of

Accepted Answer

A) hydrolases. 
B) very long chain fatty acids. 
C) peroxidases. 
D) ATP. 
E) pigments. 
A) hydrolases. 
B) very long chain fatty acids. 
C) peroxidases. 
D) ATP. 
E) pigments.

Question 10

Which of the following would be attributed to a peroxisomal dysfunction?

Accepted Answer

A) accumulation of N-acetylglucosamine phosphotransferase 
B) accumulation of ganglioside GM2 
C) accumulation of very long chain fatty acids 
D) accumulation of glucocerebroside 
E) accumulation of complex sugars 
A) accumulation of N-acetylglucosamine phosphotransferase 
B) accumulation of ganglioside GM2 
C) accumulation of very long chain fatty acids 
D) accumulation of glucocerebroside 
E) accumulation of complex sugars

Question 11

When the size of a cell increases,the surface area/volume ratio

Accepted Answer

A) decreases initially and then begins to increase. 
B) remains the same. 
C) decreases. 
D) increases initially and then begins to decrease. 
E) increases. 
A) decreases initially and then begins to increase. 
B) remains the same. 
C) decreases. 
D) increases initially and then begins to decrease. 
E) increases.

Question 12

Membrane proteins may function in

Accepted Answer

A) receiving extracellular signals. 
B) amphipathic modification. 
C) temperature control. 
D) protein manufacture. 
E) information storage. 
A) receiving extracellular signals. 
B) amphipathic modification. 
C) temperature control. 
D) protein manufacture. 
E) information storage.

Question 13

________ are infectious proteins that are responsible for several animal diseases,including scrapie and mad cow disease.

Accepted Answer

The answer of ________ are infectious proteins that are responsible...

Question 14

The matrix is to the mitochondrion as the ________ is to the chloroplast.

Accepted Answer

The answer of The matrix is to the mitochondrion as...

Question 15

Tubulin is to microtubules as ________ is to microfilaments.

Accepted Answer

The answer of Tubulin is to microtubules as ________ is...

Question 16

Prokaryotes have ________ ribosomes with ________ and ________ subunits,whereas eukaryotes have ________ ribosomes with ________ and ________ subunits.

Accepted Answer

A) 80S,50S,30S; 100S,60S,40S 
B) 100S,60S,50S; 90S,60S,40S 
C) 70S,50S,30S; 80S,60S,40S 
D) 70S,40S,30S; 80S,50S,30S 
E) 80S,60S,40S; 70S,50S,30S 
A) 80S,50S,30S; 100S,60S,40S 
B) 100S,60S,50S; 90S,60S,40S 
C) 70S,50S,30S; 80S,60S,40S 
D) 70S,40S,30S; 80S,50S,30S 
E) 80S,60S,40S; 70S,50S,30S

Question 17

Intermediate filaments are

Accepted Answer

A) different in different cell types. 
B) smaller than actin filaments. 
C) composed of tubulin. 
D) composed of globular proteins only. 
E) None of these are correct. 
A) different in different cell types. 
B) smaller than actin filaments. 
C) composed of tubulin. 
D) composed of globular proteins only. 
E) None of these are correct.

Question 18

The ________ is comprised of the semifluid portion of the cell and contains the organelles.

Accepted Answer

The answer of The ________ is comprised of the semifluid...

Exam 4: Cells and Organelles

Prions are

Which of the following processes would be most likely to occur in the Golgi complex?

Photosynthesis is to the chloroplast as ________ is to the mitochondrion.

The cytosol is best described as the

Viruses are important in the study of cell biology because

Are viruses living organisms? Defend your answer based on the properties of life.

The methanobacteria,halobacteria,and sulfobacteria are included in which domain?

Collagen fibers are to the extracellular matrix as ________ is to the cell wall.

The hallmark feature of peroxisomal diseases is the accumulation of

Which of the following would be attributed to a peroxisomal dysfunction?

When the size of a cell increases,the surface area/volume ratio

Membrane proteins may function in

________ are infectious proteins that are responsible for several animal diseases,including scrapie and mad cow disease.

The matrix is to the mitochondrion as the ________ is to the chloroplast.

Tubulin is to microtubules as ________ is to microfilaments.

Prokaryotes have ________ ribosomes with ________ and ________ subunits,whereas eukaryotes have ________ ribosomes with ________ and ________ subunits.

Intermediate filaments are

The ________ is comprised of the semifluid portion of the cell and contains the organelles.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

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

The Endomembrane System

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

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

Prokaryotes have ribosomes with and subunits,whereas eukaryotes have ribosomes with and subunits.