Question 1

Which of these statements about eukaryotic cell division is false?

Accepted Answer

A)  the nuclei of eukaryotic cells divide via the process of mitosis 
B)  haploids are cells that receive only one chromosome from each pair of chromosomes 
C)  a single round of mitosis results in the production of four haploid cells 
D)  during mitosis the nuclear envelope breaks apart and the spindle apparatus forms 
A)  the nuclei of eukaryotic cells divide via the process of mitosis 
B)  haploids are cells that receive only one chromosome from each pair of chromosomes 
C)  a single round of mitosis results in the production of four haploid cells 
D)  during mitosis the nuclear envelope breaks apart and the spindle apparatus forms

Question 2

Which of the following cellular structures can be found in both prokaryotic and eukaryotic cells?

Accepted Answer

A)  Golgi apparatus 
B)  lysosomes 
C)  peroxisomes 
D)  ribosomes 
A)  Golgi apparatus 
B)  lysosomes 
C)  peroxisomes 
D)  ribosomes

Question 3

Bacteria which show a wide variety of shapes within a single species are said to be

Accepted Answer

A)  pleomorphic 
B)  axenic 
C)  acellular 
D)  monomorphic 
A)  pleomorphic 
B)  axenic 
C)  acellular 
D)  monomorphic

Question 4

Bacterial ribosomes

Accepted Answer

A)  have a sedimentation rate of 70S 
B)  Are made up of 30S and 40S subunits 
C)  have a sedimentation rate of 80S 
D)  Are made up of 50S and 30S subunits 
A)  have a sedimentation rate of 70S 
B)  Are made up of 30S and 40S subunits 
C)  have a sedimentation rate of 80S 
D)  Are made up of 50S and 30S subunits

Question 5

Prokaryotic cells divide by

Accepted Answer

A)  mitosis 
B)  binary fission 
C)  meiosis 
D)  mitosis asexually and meiosis sexually 
A)  mitosis 
B)  binary fission 
C)  meiosis 
D)  mitosis asexually and meiosis sexually

Question 6

Bacilli produce fewer arrangements than cocci because

Accepted Answer

A)  cocci are smaller than bacilli 
B)  bacilli only reproduce asexually 
C)  bacilli divide along several different planes while cocci divide along a single plane 
D)  cocci divide along several different planes while bacilli divide along a single plane 
A)  cocci are smaller than bacilli 
B)  bacilli only reproduce asexually 
C)  bacilli divide along several different planes while cocci divide along a single plane 
D)  cocci divide along several different planes while bacilli divide along a single plane

Question 7

Which of the following is not a common bacterial shape?

Accepted Answer

A)  spirochete 
B)  coccus 
C)  disc 
D)  bacillus 
A)  spirochete 
B)  coccus 
C)  disc 
D)  bacillus

Question 8

While division in one plane produces cells in pairs,what does random division produce?

Accepted Answer

A)  sarcinae 
B)  eight cells arranged in a cube 
C)  grapelike clusters (staphylo-) 
D)  four cells arranged in a cube 
A)  sarcinae 
B)  eight cells arranged in a cube 
C)  grapelike clusters (staphylo-) 
D)  four cells arranged in a cube

Question 9

Which of the following statements about cell walls is false?

Accepted Answer

A)  all bacterial cell walls contain teichoic acid 
B)  plants and fungi have cell walls 
C)  bacteria which have lost their cell wall are known as L-forms 
D)  algal protests have cell walls 
A)  all bacterial cell walls contain teichoic acid 
B)  plants and fungi have cell walls 
C)  bacteria which have lost their cell wall are known as L-forms 
D)  algal protests have cell walls

Question 10

Removal of the cell wall of a Gram positive bacteria results in the formation of a

Accepted Answer

A)  protoplast 
B)  spheroplast 
C)  periplast 
D)  polyplast 
A)  protoplast 
B)  spheroplast 
C)  periplast 
D)  polyplast

Question 11

What is the function of gas-filled vacuoles in aquatic photosynthetic bacteria?

Accepted Answer

A)  transducers to detect chemicals and signal the cells to respond 
B)  regulate the depth at which they float by changing amount of gas in vacuoles 
C)  change the handedness of the helix in which the bacteria is moving 
D)  allows the bacteria to respond to magnetic fields 
A)  transducers to detect chemicals and signal the cells to respond 
B)  regulate the depth at which they float by changing amount of gas in vacuoles 
C)  change the handedness of the helix in which the bacteria is moving 
D)  allows the bacteria to respond to magnetic fields

Question 12

Which of the following cellular structures are found only in prokaryotic cells?

Accepted Answer

A)  endoplasmic reticulum 
B)  pili 
C)  nucleolus 
D)  lysosomes 
A)  endoplasmic reticulum 
B)  pili 
C)  nucleolus 
D)  lysosomes

Question 13

Which of the following is not found in bacterial cells?

Accepted Answer

A)  a cell membrane, usually surrounded by a cell wall 
B)  an internal cytoplasm with ribosomes, a nuclear region and in some cases granules 
C)  a variety of external structures, such as capsules, flagella and pili 
D)  respiratory enzymes contained in an internal structure surrounded by membranes 
A)  a cell membrane, usually surrounded by a cell wall 
B)  an internal cytoplasm with ribosomes, a nuclear region and in some cases granules 
C)  a variety of external structures, such as capsules, flagella and pili 
D)  respiratory enzymes contained in an internal structure surrounded by membranes

Question 14

Which of the following groups of organisms is not prokaryotic?

Accepted Answer

A)  Archaea 
B)  Bacteria 
C)  Eubacteria 
D)  Eukarya 
A)  Archaea 
B)  Bacteria 
C)  Eubacteria 
D)  Eukarya

Question 15

Which of the following statements about the outer membrane is true?

Accepted Answer

A)  it contains an endotoxin (lipopolysaccharide) which is responsible for fever and potentially serious complications in human infections 
B)  it prevents the cell from lysing when fluids flow into the cell 
C)  treatment with antibiotics which kill the bacteria will reduce the concentration of endotoxin 
D)  it is a space that is very active in cell metabolism 
A)  it contains an endotoxin (lipopolysaccharide) which is responsible for fever and potentially serious complications in human infections 
B)  it prevents the cell from lysing when fluids flow into the cell 
C)  treatment with antibiotics which kill the bacteria will reduce the concentration of endotoxin 
D)  it is a space that is very active in cell metabolism

Question 16

The charged,phosphate end of a membrane phospholipid is

Accepted Answer

A)  water-fearing 
B)  hydrophilic 
C)  hydrophobic 
D)  none of the above 
A)  water-fearing 
B)  hydrophilic 
C)  hydrophobic 
D)  none of the above

Question 17

A typical bacterial cell has a salt concentration of about 1%. If the cell is placed in a solution containing 10% salt,the net flow of water will be

Accepted Answer

A)  out of the cell 
B)  into the cell 
C)  equally in and out of the cell 
D)  none of the above since water doesn't cross bacterial cell membranes 
A)  out of the cell 
B)  into the cell 
C)  equally in and out of the cell 
D)  none of the above since water doesn't cross bacterial cell membranes

Question 18

Peptidoglycan makes up more than 50% of a ________ cell wall.

Accepted Answer

A)  Gram negative 
B)  Gram positive 
C)  Gram variable 
D)  acid-fast 
A)  Gram negative 
B)  Gram positive 
C)  Gram variable 
D)  acid-fast

Question 19

The _____ portion of the cell membrane functions as a barrier while the ______ portion provides specific functions,including pumps,receptors,adhesion,etc.

Accepted Answer

A)  carbohydrate; nucleic acid 
B)  lipid; protein 
C)  lipid; carbohydrate 
D)  nucleic acid; lipid 
A)  carbohydrate; nucleic acid 
B)  lipid; protein 
C)  lipid; carbohydrate 
D)  nucleic acid; lipid

Question 20

Endospores are usually induced to form when

Accepted Answer

A)  temperatures rise 
B)  certain nutrients are depleted 
C)  radiation is detected 
D)  water is lost from the cell 
A)  temperatures rise 
B)  certain nutrients are depleted 
C)  radiation is detected 
D)  water is lost from the cell

Exam 4: Characteristics of Prokaryotic and Eukaryotic Cells

Which of these statements about eukaryotic cell division is false?

Which of the following cellular structures can be found in both prokaryotic and eukaryotic cells?

Bacteria which show a wide variety of shapes within a single species are said to be

Bacterial ribosomes

Prokaryotic cells divide by

Bacilli produce fewer arrangements than cocci because

Which of the following is not a common bacterial shape?

While division in one plane produces cells in pairs,what does random division produce?

Which of the following statements about cell walls is false?

Removal of the cell wall of a Gram positive bacteria results in the formation of a

What is the function of gas-filled vacuoles in aquatic photosynthetic bacteria?

Which of the following cellular structures are found only in prokaryotic cells?

Which of the following is not found in bacterial cells?

Which of the following groups of organisms is not prokaryotic?

Which of the following statements about the outer membrane is true?

The charged,phosphate end of a membrane phospholipid is

A typical bacterial cell has a salt concentration of about 1%. If the cell is placed in a solution containing 10% salt,the net flow of water will be

Peptidoglycan makes up more than 50% of a ________ cell wall.

The _____ portion of the cell membrane functions as a barrier while the ______ portion provides specific functions,including pumps,receptors,adhesion,etc.

Endospores are usually induced to form when

Scope and History of Microbiology

Fundamentals of Chemistry

Microscopy and Staining

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunolgy Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

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