Question 1

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 2

Inclusions found in bacteria generally would not include:

Accepted Answer

A) granules 
B) volutin 
C) metachromatic granules 
D) ribosomes 
A) granules 
B) volutin 
C) metachromatic granules 
D) ribosomes

Question 3

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 4

During diffusion,molecules _____.

Accepted Answer

A) move from hotter areas to cooler areas 
B) move from areas of higher concentration to areas of lower concentration 
C) move from areas of lower concentration to areas of higher concentration 
D) expend energy to more around 
A) move from hotter areas to cooler areas 
B) move from areas of higher concentration to areas of lower concentration 
C) move from areas of lower concentration to areas of higher concentration 
D) expend energy to more around

Question 5

Osmosis most directly involves:

Accepted Answer

A) water moving down a concentration gradient 
B) organic molecules crossing a membrane 
C) energy being expended to import large molecules into the cell 
D) sugars and salts moving down their concentration gradient 
A) water moving down a concentration gradient 
B) organic molecules crossing a membrane 
C) energy being expended to import large molecules into the cell 
D) sugars and salts moving down their concentration gradient

Question 6

Which is the correct ordering of cell wall components starting from outside the cell and going inward?

Accepted Answer

A) In Gram-positive bacteria: peptidoglycan, cell membrane 
B) In Gram-negative bacteria: peptidoglycan, lipopolysaccharide, periplasmic space, outer membrane, cell membrane 
C) In acid fast bacteria: peptidoglycan, lipid layer, cell membrane 
D) In Gram-negative bacteria: peptidoglycan, periplasmic space, lipid membrane 
A) In Gram-positive bacteria: peptidoglycan, cell membrane 
B) In Gram-negative bacteria: peptidoglycan, lipopolysaccharide, periplasmic space, outer membrane, cell membrane 
C) In acid fast bacteria: peptidoglycan, lipid layer, cell membrane 
D) In Gram-negative bacteria: peptidoglycan, periplasmic space, lipid membrane

Question 7

Which of the following statements about motility is false?

Accepted Answer

A) Chemotaxis is the movement of bacteria toward or away from a chemical. 
B) Pseudopodia are associated with fungi. 
C) Bacteria use helical flagellar movements to orient towards external signals. 
D) Pseudopodia are temporary projections of cytoplasm. 
A) Chemotaxis is the movement of bacteria toward or away from a chemical. 
B) Pseudopodia are associated with fungi. 
C) Bacteria use helical flagellar movements to orient towards external signals. 
D) Pseudopodia are temporary projections of cytoplasm.

Question 8

Which of the following statements is false?

Accepted Answer

A) All bacteria are capable of forming capsules. 
B) The chemical composition of each capsule is unique to a particular strain of bacteria. 
C) Slime layers are usually thinner than capsules. 
D) A slime layer protects bacteria against drying and helps trap nutrients near a cell. 
A) All bacteria are capable of forming capsules. 
B) The chemical composition of each capsule is unique to a particular strain of bacteria. 
C) Slime layers are usually thinner than capsules. 
D) A slime layer protects bacteria against drying and helps trap nutrients near a cell.

Question 9

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 10

The most important structural component of bacterial cell walls is _____.

Accepted Answer

A) teichoic acid 
B) lipotechoic acid 
C) peptidoglycan 
D) glutamic acid 
A) teichoic acid 
B) lipotechoic acid 
C) peptidoglycan 
D) glutamic acid

Question 11

A charged molecule which moves down its concentration gradient and across a pore in a cell membrane without energy being expended by the cell is experiencing _____.

Accepted Answer

A) simple diffusion 
B) osmosis 
C) active transport 
D) facilitated diffusion 
A) simple diffusion 
B) osmosis 
C) active transport 
D) facilitated diffusion

Question 12

Endospores are typically found in the genus:

Accepted Answer

A) Streptococcus 
B) Clostridium 
C) Mycobacterium 
D) Staphylococci 
A) Streptococcus 
B) Clostridium 
C) Mycobacterium 
D) Staphylococci

Question 13

Bacteria move by means of:

Accepted Answer

A) cilia 
B) flagella 
C) fimbriae 
D) pili 
A) cilia 
B) flagella 
C) fimbriae 
D) pili

Question 14

In bacteria,the cell membrane functions in the all of the following ways EXCEPT:

Accepted Answer

A) regulates movement of materials into and out of the cell 
B) synthesizes cell wall components 
C) serves as the site for protein synthesis 
D) assists with DNA replication 
A) regulates movement of materials into and out of the cell 
B) synthesizes cell wall components 
C) serves as the site for protein synthesis 
D) assists with DNA replication

Question 15

Some bacteria can transfer DNA to another cell using:

Accepted Answer

A) conjugation pili 
B) fimbriae 
C) axial filaments 
D) lophotrichous flagella 
A) conjugation pili 
B) fimbriae 
C) axial filaments 
D) lophotrichous flagella

Question 16

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 17

What supports the idea that prokaryotes were involved in the evolution of eukaryotes by means of endosymbiosis?

Accepted Answer

Evidence supporting the idea that prokar

Question 18

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 19

Which of the following is responsible for converting sunlight into chemical energy?

Accepted Answer

A) Chromatophores 
B) Chloroplasts 
C) Endoplasmic reticulum 
D) Two of the above 
A) Chromatophores 
B) Chloroplasts 
C) Endoplasmic reticulum 
D) Two of the above

Question 20

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

Exam 4: Characteristics of Prokaryotic and Eukaryotic Cells

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

Inclusions found in bacteria generally would not include:

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

During diffusion,molecules _____.

Osmosis most directly involves:

Which is the correct ordering of cell wall components starting from outside the cell and going inward?

Which of the following statements about motility is false?

Which of the following statements is false?

The charged,phosphate end of a membrane phospholipid is:

The most important structural component of bacterial cell walls is _____.

A charged molecule which moves down its concentration gradient and across a pore in a cell membrane without energy being expended by the cell is experiencing _____.

Endospores are typically found in the genus:

Bacteria move by means of:

In bacteria,the cell membrane functions in the all of the following ways EXCEPT:

Some bacteria can transfer DNA to another cell using:

Which of the following is not found in bacterial cells?

What supports the idea that prokaryotes were involved in the evolution of eukaryotes by means of endosymbiosis?

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 _____.

Which of the following is responsible for converting sunlight into chemical energy?

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

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

Immunology 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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