Question 1

Which one of the following pairs is mismatched?

Accepted Answer

A)   lysosome-protein synthesis
B)   cytoskeleton-microfilaments
C)   nucleus-DNA replication
D)   cell membrane-lipid bilayer
E)   Golgi apparatus-modification, processing, and sorting of macromoleculesF) B) and D)
G) C) and D)

Question 2

Which of the following statements about peroxisomes is INCORRECT?

Accepted Answer

A)   They were once viewed as semiautonomous.
B)   They assist in detoxifying molecules.
C)   They possess a single membrane.
D)   They possess their own DNA.
E)   They possess an enzyme that prevents accumulation of hydrogen peroxide and free radicals.F) B) and E)
G) None of the above D

Question 3

Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?

Accepted Answer

A)   microtubules
B)   intermediate filaments
C)   microfilaments
D)   centrioles
E)   piliF) B) and C)
G) B) and D)

Question 4

Which of the following is NOT true for cilia or flagella?

Accepted Answer

A)   They are involved in cell motility.
B)   They require ATP to work.
C)   They are composed of microfilaments.
D)   They require motor proteins to work.
E)   They are composed of an internal structure called the axoneme.F) D) and E)
G) B) and C)

Question 5

Which of the following is INCORRECT about ribosome biosynthesis and structure?

Accepted Answer

A)   Ribosomes are composed of two subunits.
B)   Ribosomes are composed of RNA.
C)   All components of the ribosome are produced in the cytosol.
D)   Ribosomal proteins are produced in the cytosol.
E)   Ribosomes are composed of proteins.F) None of the above
G) C) and D) C

Question 6

Lysosomes digest intracellular debris, such as organelles, through the process of __________.

Accepted Answer

A)   endocytosis
B)   phagocytosis
C)   autophagy
D)   pinocytosis
E)   excocytosisF) A) and B)
G) A) and C)

Question 7

The first step in cotranslational sorting is the peptide is directed to the endoplasmic reticulum.

Accepted Answer

A) True 
 B)False

Question 8

This cytoskeletal structure is composed of actin and regulates cell shape, cell movement, and muscle contraction.

Accepted Answer

A)   microfilaments
B)   intermediate filaments
C)   microtubules
D)   both microfilaments and intermediate filaments
E)   both microfilaments and microtubulesF) C) and D)
G) A) and E)

Question 9

Which of the following are principles of the cell theory or cell doctrine?

Accepted Answer

A)   All living things are composed of one or more cells.
B)   Cells are the smallest unit of living organisms.
C)   New cells come only from pre-existing cells by cell division.
D)   Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division.
E)   All living organisms are composed of one or more cells, cells are the smallest units of life, and new . cells come only from pre-existing cells by cell division.F) B) and C)
G) A) and E)

Question 10

The flagellum is used for cell motility in eukaryotes only.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following organelles can grow and divide to reproduce themselves?

Accepted Answer

A)   mitochondria only
B)   chloroplasts only
C)   peroxisomes only
D)   both mitochondria and chloroplasts
E)   Mithochondria, chloroplasts, and lysosomes can reproduce themselves.F) A) and C)
G) B) and E)

Question 12

The cytoskeleton and motor proteins are important for which of the following processes?

Accepted Answer

A)   cell motility
B)   whipping motion of sperm flagella
C)   movement of amoeba by lamellopodia
D)   muscle contraction
E)   All of the choices are correct.F) D) and E)
G) C) and E) E

Question 13

Which would be the most accurate endomembrane route through which a protein is secreted from a cell?

Accepted Answer

A)   Golgi apparatus?lysosome?vesicles?plasma membrane
B)   plasmid?plasma membrane?nuclear envelope?smooth endoplasmic reticulum
C)   nuclear envelope?vesicles?Golgi apparatus?plasma membrane
D)   rough endoplasmic reticulum?lysosomes?vesicles?cell membrane
E)   rough endoplasmic reticulum? Golgi apparatus?vesicles ?plasma membraneF) A) and C)
G) A) and D)

Question 14

Prokaryotes

Accepted Answer

A)   lack a true nucleus.
B)   lack true DNA.
C)   use the cell membrane rather than ribosomes for making proteins.
D)   contain numerous organelles.
E)   are relatively benign cells incapable of harming organisms.F) B) and C)
G) All of the above

Question 15

Which of the following plant organelle is a colorless plastid that stores starch in roots?

Accepted Answer

A)   thyloplasts
B)   chloroplasts
C)   chromoplasts
D)   amyloplasts
E)   both chloroplasts and chromoplastsF) A) and D)
G) B) and E)

Question 16

In animal cells microtubules grow from which structure?

Accepted Answer

A)   origination centers in the plasma membrane
B)   outer membrane of the nuclear envelope
C)   centrosomes containing centrioles
D)   dimerization centers located throughout the cytosol
E)   the tips of the chromosomesF) A) and E)
G) A) and B)

Question 17

Plasma membranes are a feature of

Accepted Answer

A)   all cells.
B)   prokaryotic cells only.
C)   eukaryotic cells only.
D)   plant cells only.
E)   animal cells only.F) C) and D)
G) B) and C)

Question 18

The nucleus is to eukaryotes as the ________ is to prokaryotes.

Accepted Answer

A)   pili
B)   glycocalyx
C)   ribosome
D)   nucleoid
E)   cell wallF) A) and C)
G) A) and B)

Question 19

This is a tool that enables researchers to study the structure and function of cells.

Accepted Answer

A)   magnifying glass
B)   microscope
C)   tunneling assay
D)   digital recording
E)   differential centrifugationF) A) and E)
G) A) and B)

Question 20

Which two cell scientists are credited with the formulation of the cell theory, also known as the cell doctrine?

Accepted Answer

A)   Watson and Crick
B)   Schleiden and Schwann
C)   Schleiden and Hooke
D)   Schwann and JennerE) None of the above
F) All of the above

Exam 4: General Features of Cells

Which one of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

Which of the following statements about peroxisomes is INCORRECT?

Correct AnswerverifiedD

Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?

Correct AnswerverifiedShow Answer

Which of the following is NOT true for cilia or flagella?

Correct AnswerverifiedShow Answer

Which of the following is INCORRECT about ribosome biosynthesis and structure?

Correct AnswerverifiedC

Lysosomes digest intracellular debris, such as organelles, through the process of __________.

Correct AnswerverifiedShow Answer

The first step in cotranslational sorting is the peptide is directed to the endoplasmic reticulum.

Correct AnswerverifiedShow Answer

This cytoskeletal structure is composed of actin and regulates cell shape, cell movement, and muscle contraction.

Correct AnswerverifiedShow Answer

Which of the following are principles of the cell theory or cell doctrine?

Correct AnswerverifiedShow Answer

The flagellum is used for cell motility in eukaryotes only.

Correct AnswerverifiedShow Answer

Which of the following organelles can grow and divide to reproduce themselves?

Correct AnswerverifiedShow Answer

The cytoskeleton and motor proteins are important for which of the following processes?

Correct AnswerverifiedE

Which would be the most accurate endomembrane route through which a protein is secreted from a cell?

Correct AnswerverifiedShow Answer

Prokaryotes

Correct AnswerverifiedShow Answer

Which of the following plant organelle is a colorless plastid that stores starch in roots?

Correct AnswerverifiedShow Answer

In animal cells microtubules grow from which structure?

Correct AnswerverifiedShow Answer

Plasma membranes are a feature of

Correct AnswerverifiedShow Answer

The nucleus is to eukaryotes as the ________ is to prokaryotes.

Correct AnswerverifiedShow Answer

This is a tool that enables researchers to study the structure and function of cells.

Correct AnswerverifiedShow Answer

Which two cell scientists are credited with the formulation of the cell theory, also known as the cell doctrine?

Correct AnswerverifiedShow Answer

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C

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E

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