Podcast
Questions and Answers
What did Louis Pasteur's 'swan neck experiment' demonstrate?
What did Louis Pasteur's 'swan neck experiment' demonstrate?
- Microorganisms do not just spontaneously arise. (correct)
- Microorganisms can develop from nonliving or decomposing matter.
- Microorganisms can only develop in the presence of foul air and bad smells.
- Microorganisms are the result of the process of decay.
What did Joseph Lister innovate to prevent infections during surgery?
What did Joseph Lister innovate to prevent infections during surgery?
- Introduction of techniques for study of microbial pathogens.
- Use of foul air and bad smells to disinfect the surgical environment.
- Application of miasma theory to cleanse the surgical tools.
- Development of surgery methods to prevent infections. (correct)
What is the highest rank in microbial taxonomy?
What is the highest rank in microbial taxonomy?
- Phylum
- Order
- Domain (correct)
- Genus
How are gene names and protein names typically correlated in bacteria?
How are gene names and protein names typically correlated in bacteria?
What is the term for organisms that are variable in shape?
What is the term for organisms that are variable in shape?
What is the purpose of the 'swan neck' in Louis Pasteur's experiment?
What is the purpose of the 'swan neck' in Louis Pasteur's experiment?
What is the function of external receptors on the cell surface in receptor-mediated endocytosis?
What is the function of external receptors on the cell surface in receptor-mediated endocytosis?
What is the main difference between bacterial and eukaryotic ribosomes?
What is the main difference between bacterial and eukaryotic ribosomes?
What is the role of cilia and flagella in eukaryotic cells?
What is the role of cilia and flagella in eukaryotic cells?
What is a viroid composed of?
What is a viroid composed of?
What do all virions contain?
What do all virions contain?
What is the function of envelope proteins in viruses?
What is the function of envelope proteins in viruses?
What type of transport uses ion gradients to cotransport substances?
What type of transport uses ion gradients to cotransport substances?
Which type of transport chemically modifies molecules as it is brought into the cell?
Which type of transport chemically modifies molecules as it is brought into the cell?
What is the major component of the bacterial cell wall peptidoglycan?
What is the major component of the bacterial cell wall peptidoglycan?
Which type of bacteria has a cell wall that consists primarily of peptidoglycan and may also contain teichoic acids?
Which type of bacteria has a cell wall that consists primarily of peptidoglycan and may also contain teichoic acids?
What do Gram-negative cell walls consist of, in addition to a thin layer of peptidoglycan?
What do Gram-negative cell walls consist of, in addition to a thin layer of peptidoglycan?
What connects to peptidoglycan and lipids in the plasma membrane in Gram-positive cell walls?
What connects to peptidoglycan and lipids in the plasma membrane in Gram-positive cell walls?
What are the two types of alternative sugars in the peptidoglycan structure?
What are the two types of alternative sugars in the peptidoglycan structure?
What is very insoluble, making its uptake difficult for microorganisms?
What is very insoluble, making its uptake difficult for microorganisms?
Which type of bacteria consists of a thin layer of peptidoglycan surrounded by an outer membrane composed of lipids, lipoproteins, and lipopolysaccharide (LPS)?
Which type of bacteria consists of a thin layer of peptidoglycan surrounded by an outer membrane composed of lipids, lipoproteins, and lipopolysaccharide (LPS)?
What do Gram-positive cell walls primarily consist of?
What do Gram-positive cell walls primarily consist of?
What is covalently linked to peptidoglycan in Gram-negative cell walls?
What is covalently linked to peptidoglycan in Gram-negative cell walls?
What are the two types based on gram stain?
What are the two types based on gram stain?
Which structure aids in the condensation of the nucleoid in bacteria?
Which structure aids in the condensation of the nucleoid in bacteria?
What is the main function of plasmids in bacteria?
What is the main function of plasmids in bacteria?
Which type of motility involves short, intermittent, jerky motions due to pili at the ends of the cell?
Which type of motility involves short, intermittent, jerky motions due to pili at the ends of the cell?
What is the purpose of bacterial endospore formation?
What is the purpose of bacterial endospore formation?
Which statement best describes the movement of a bacterium during chemotaxis?
Which statement best describes the movement of a bacterium during chemotaxis?
What is the role of nucleoid associated proteins (NAPs) in bacteria?
What is the role of nucleoid associated proteins (NAPs) in bacteria?
What is the main function of flagella in bacteria?
What is the main function of flagella in bacteria?
Which structure is required for conjugation in bacteria?
Which structure is required for conjugation in bacteria?
What triggers the process of sporulation in bacteria?
What triggers the process of sporulation in bacteria?
What is the main feature that distinguishes Archaea from Bacteria and Eukarya?
What is the main feature that distinguishes Archaea from Bacteria and Eukarya?
What is a characteristic feature of spirochete motility in bacteria?
What is a characteristic feature of spirochete motility in bacteria?
What is the smallest observed size for Archaeal rods?
What is the smallest observed size for Archaeal rods?
