Question 1

Which of the following is true of plant cells?

Accepted Answer

A) The plant cell has no cell wall. 
B) Only plant cells have a cell membrane. 
C) Plant cells may contain chloroplasts. 
D) Plant cells are always much larger than animal cells. 
E) Chromosomes are found only in plant cells. 
A) The plant cell has no cell wall. 
B) Only plant cells have a cell membrane. 
C) Plant cells may contain chloroplasts. 
D) Plant cells are always much larger than animal cells. 
E) Chromosomes are found only in plant cells.

Question 2

The similarity in the evolutionary origins of mitochondria and chloroplasts has led to the development of the that proposed they were originally bacteria.

Accepted Answer

The answer of The similarity in the evolutionary origins of...

Question 3

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

Accepted Answer

A) blue- green algae 
B) protista 
C) eubacteria 
D) archaea 
E) all of the above 
A) blue- green algae 
B) protista 
C) eubacteria 
D) archaea 
E) all of the above

Question 4

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 5

Communication between animal cells is facilitated by

Accepted Answer

A) gap junctions. 
B) tight junctions. 
C) plasmodesmata. 
D) adhesive junctions. 
E) both B and C 
A) gap junctions. 
B) tight junctions. 
C) plasmodesmata. 
D) adhesive junctions. 
E) both B and C

Question 6

Prokaryotes have S ribosomes with _ _S and S subunits, whereas eukaryotes have _S ribosomes with _S and S subunits.

Accepted Answer

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

Question 7

Which organelle has only a single membrane around it?

Accepted Answer

A) nucleus 
B) mitochondrion 
C) chloroplast 
D) peroxisome 
E) ribosome 
A) nucleus 
B) mitochondrion 
C) chloroplast 
D) peroxisome 
E) ribosome

Question 8

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

Accepted Answer

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

Question 9

Which of the following is NOT believed to be a virus or to be caused by a virus?

Accepted Answer

A) T4 phage 
B) Epstein- Barr 
C) AIDS 
D) TMV 
E) Scrapie 
A) T4 phage 
B) Epstein- Barr 
C) AIDS 
D) TMV 
E) Scrapie

Question 10

Which of the following is a eukaryotic characteristic?

Accepted Answer

A) little processing of RNA 
B) cell fission 
C) 70S ribosomes 
D) membrane- bound nucleus 
E) none of the above 
A) little processing of RNA 
B) cell fission 
C) 70S ribosomes 
D) membrane- bound nucleus 
E) none of the above

Question 11

The major structural elements of the cytoskeleton are

Accepted Answer

A) microtubules, microfilaments, and intermediate filaments. 
B) cleavage furrows and G- actin. 
C) the cytoplasm and cytosol. 
D) proteoglycans and cellulose microfibrils. 
E) the extracellular matrix and the cell wall. 
A) microtubules, microfilaments, and intermediate filaments. 
B) cleavage furrows and G- actin. 
C) the cytoplasm and cytosol. 
D) proteoglycans and cellulose microfibrils. 
E) the extracellular matrix and the cell wall.

Question 12

The cytosol is best described as the

Accepted Answer

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

Question 13

Which of the following is NOT generally associated with a chloroplast?

Accepted Answer

A) matrix 
B) thylakoids 
C) grana 
D) stroma 
E) both A and B 
A) matrix 
B) thylakoids 
C) grana 
D) stroma 
E) both A and B

Question 14

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

Accepted Answer

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

Question 15

The pathway that a secretory protein takes from inside to outside is: rough endoplasmic reticulum, , Golgi complex, , outside the cell.

Accepted Answer

ER vesicle

Question 16

The smooth endoplasmic reticulum functions in synthesis of

Accepted Answer

A) DNA. 
B) lipids. 
C) polysaccharides. 
D) proteins. 
E) all of the above 
A) DNA. 
B) lipids. 
C) polysaccharides. 
D) proteins. 
E) all of the above

Question 17

Tubulin is to microtubules, as is to microfilaments.

Accepted Answer

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

Exam 4: Cells and Organelles

Which of the following is true of plant cells?

The similarity in the evolutionary origins of mitochondria and chloroplasts has led to the development of the that proposed they were originally bacteria.

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

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

Communication between animal cells is facilitated by

Prokaryotes have S ribosomes with _ _S and S subunits, whereas eukaryotes have _S ribosomes with _S and S subunits.

Which organelle has only a single membrane around it?

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

Which of the following is NOT believed to be a virus or to be caused by a virus?

Which of the following is a eukaryotic characteristic?

The major structural elements of the cytoskeleton are

The cytosol is best described as the

Which of the following is NOT generally associated with a chloroplast?

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

The pathway that a secretory protein takes from inside to outside is: rough endoplasmic reticulum, , Golgi complex, , outside the cell.

The smooth endoplasmic reticulum functions in synthesis of

Tubulin is to microtubules, as is to microfilaments.

A Preview of the Cell

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 and Peroxisomes

Signal Transduction Mechanisms: I Electrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Ii Messengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesion, 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: I the Genetic Code and Transcription

Gene Expression: II Protein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

Filters