Podcast
Questions and Answers
Who invented the microscope and described the first microbes?
Who invented the microscope and described the first microbes?
- Lazzaro Spallanzani
- Francesco Redi
- Robert Hooke (correct)
- Antonie van Leeuwenhoek
Which scientist observed the first single-celled organisms, such as bacteria?
Which scientist observed the first single-celled organisms, such as bacteria?
- Francesco Redi
- Antonie van Leeuwenhoek (correct)
- Lazzaro Spallanzani
- Robert Hooke
Who conducted the 'meat/flies experiment' that disproved the idea of spontaneous generation for large organisms?
Who conducted the 'meat/flies experiment' that disproved the idea of spontaneous generation for large organisms?
- Robert Hooke
- Francesco Redi (correct)
- Lazzaro Spallanzani
- Antonie van Leeuwenhoek
Which scientist sterilized meat broth by boiling, demonstrating that it failed to grow microbes?
Which scientist sterilized meat broth by boiling, demonstrating that it failed to grow microbes?
What theory proposed that living creatures could arise without parents?
What theory proposed that living creatures could arise without parents?
'Spontaneous Generations' was disproved by which scientist's experiment involving meat and flies?
'Spontaneous Generations' was disproved by which scientist's experiment involving meat and flies?
Who disproved the theory of spontaneous generation through the Swan-necked flask experiment?
Who disproved the theory of spontaneous generation through the Swan-necked flask experiment?
What does each colony/spot of bacterial growth represent?
What does each colony/spot of bacterial growth represent?
Who discovered the solid medium using agar for bacterial culture to grow?
Who discovered the solid medium using agar for bacterial culture to grow?
Which postulate of Koch's postulates states that the suspected organism should be present in ALL cases of the disease & absent from healthy individuals?
Which postulate of Koch's postulates states that the suspected organism should be present in ALL cases of the disease & absent from healthy individuals?
What is the main limitation of Koch's postulates in identifying pathogens and diseases?
What is the main limitation of Koch's postulates in identifying pathogens and diseases?
What is stromatolite clear fossilized evidence of?
What is stromatolite clear fossilized evidence of?
What is the prebiotic soup a hypothetical set of conditions for?
What is the prebiotic soup a hypothetical set of conditions for?
What was produced by the Miller-Urey experiment under simulated prehistoric Earth conditions?
What was produced by the Miller-Urey experiment under simulated prehistoric Earth conditions?
What model suggests self-sufficient abiotic chemical reactions formed cellular metabolism?
What model suggests self-sufficient abiotic chemical reactions formed cellular metabolism?
Which molecule is suggested to be a precursor to DNA and has catalytic activity?
Which molecule is suggested to be a precursor to DNA and has catalytic activity?
What does the molecular clock measure?
What does the molecular clock measure?
What does the Shine-Dalgarno sequence allow on mRNA?
What does the Shine-Dalgarno sequence allow on mRNA?
What is the main point of the endosymbiont theory?
What is the main point of the endosymbiont theory?
What is a characteristic of bacterial genomes?
What is a characteristic of bacterial genomes?
Which process involves the transfer of DNA from the environment into a bacterial cell?
Which process involves the transfer of DNA from the environment into a bacterial cell?
What is the main function of bacteriophages?
What is the main function of bacteriophages?
Which statement best describes horizontal gene transfer in bacteria?
Which statement best describes horizontal gene transfer in bacteria?
What is a characteristic of gram-negative bacteria?
What is a characteristic of gram-negative bacteria?
What is the fate of most foreign DNA entering a bacterial cell?
What is the fate of most foreign DNA entering a bacterial cell?
What is the role of Recombination proteins (Rec) in bacteria?
What is the role of Recombination proteins (Rec) in bacteria?
What is the primary function of operons in bacteria?
What is the primary function of operons in bacteria?
What is an example of genomic island regions in bacterial genomes?
What is an example of genomic island regions in bacterial genomes?
What is a characteristic feature of the nucleoid in bacterial cells?
What is a characteristic feature of the nucleoid in bacterial cells?
How do mitochondria behave like endosymbiotic organisms?
How do mitochondria behave like endosymbiotic organisms?
During DNA replication, which enzyme is responsible for synthesizing new DNA strands?
During DNA replication, which enzyme is responsible for synthesizing new DNA strands?
What is the primary function of RecA during DNA recombination?
What is the primary function of RecA during DNA recombination?
Which enzyme catalyzes the breaking and rejoining event that passes the chromosomes at the termination of DNA replication?
Which enzyme catalyzes the breaking and rejoining event that passes the chromosomes at the termination of DNA replication?
What is the function of RNase H during the completion of DNA replication?
What is the function of RNase H during the completion of DNA replication?
What is the primary role of DNA primase in DNA replication?
What is the primary role of DNA primase in DNA replication?
Which type of mutation involves a change in a single base?
Which type of mutation involves a change in a single base?
What is the function of photolyase enzyme in DNA repair?
What is the function of photolyase enzyme in DNA repair?
What is the primary function of RecBCD protein machine in DNA recombination?
What is the primary function of RecBCD protein machine in DNA recombination?
What type of replication occurs for cellular DNA in most cases?
What type of replication occurs for cellular DNA in most cases?
Which enzyme is responsible for keeping the single DNA strands apart during DNA synthesis?
Which enzyme is responsible for keeping the single DNA strands apart during DNA synthesis?
What do base analogs do during DNA replication?
What do base analogs do during DNA replication?
What type of mutation changes the amino acid sequence to a stop codon?
What type of mutation changes the amino acid sequence to a stop codon?
What is the function of the O-specific polysaccharide in Lipopolysaccharide (LPS)?
What is the function of the O-specific polysaccharide in Lipopolysaccharide (LPS)?
Which type of transport involves the movement of molecules against the gradient and requires energy?
Which type of transport involves the movement of molecules against the gradient and requires energy?
What is the main function of ABC Transporters?
What is the main function of ABC Transporters?
What is the role of the phosphotransferase system (PTS) in bacterial cells?
What is the role of the phosphotransferase system (PTS) in bacterial cells?
Which system is responsible for the transport of unfolded proteins requiring ATP hydrolysis to move out of the cell?
Which system is responsible for the transport of unfolded proteins requiring ATP hydrolysis to move out of the cell?
What is the main function of the Sec-dependent secretion proteins?
What is the main function of the Sec-dependent secretion proteins?
Which bacterial secretion system is used to inject toxins/harmful molecules into other cells?
Which bacterial secretion system is used to inject toxins/harmful molecules into other cells?
What is the main function of Glycocalyx?
What is the main function of Glycocalyx?
What does the Proton-Motive Force promote?
What does the Proton-Motive Force promote?
What is the function of Capsule in bacterial cells?
What is the function of Capsule in bacterial cells?
What is the purpose of Type III bacterial secretion system?
What is the purpose of Type III bacterial secretion system?
Which repair mechanism recognizes and repairs bases that (mostly) do not distort DNA structure?
Which repair mechanism recognizes and repairs bases that (mostly) do not distort DNA structure?
What is the function of DNA ligase in the excision repair process?
What is the function of DNA ligase in the excision repair process?
In the SOS response, what is the role of RecA?
In the SOS response, what is the role of RecA?
Which process requires homology and is RecA mediated?
Which process requires homology and is RecA mediated?
What is the function of Rho in Rho-dependent termination?
What is the function of Rho in Rho-dependent termination?
What is the role of Sigma70 factor in transcription?
What is the role of Sigma70 factor in transcription?
Which structure serves as a permeability barrier in bacterial cells?
Which structure serves as a permeability barrier in bacterial cells?
