Podcast
Questions and Answers
Which theory posits that living creatures could arise without parents?
Which theory posits that living creatures could arise without parents?
- Theory of abiogenesis
- Theory of spontaneous generation (correct)
- Expansion in the pool of biological molecules
- Germ theory of disease
According to Koch's Postulates, which postulate states that the suspected organism should be present in ALL cases of the disease and ABSENT from healthy animals?
According to Koch's Postulates, which postulate states that the suspected organism should be present in ALL cases of the disease and ABSENT from healthy animals?
- Postulate 2
- Postulate 3
- Postulate 4
- Postulate 1 (correct)
What is used as a molecular clock for bacterial evolution?
What is used as a molecular clock for bacterial evolution?
- Universal molecules
- 18S rRNA
- Small subunit rRNA (correct)
- Lighting sparked organic building blocks
What is the impact of microbes on food availability?
What is the impact of microbes on food availability?
According to the lecture, what enables spontaneous generation?
According to the lecture, what enables spontaneous generation?
Which theory describes the generation of organic building blocks from simply reduced chemicals sparked by lighting?
Which theory describes the generation of organic building blocks from simply reduced chemicals sparked by lighting?
What does the molecular clock contain?
What does the molecular clock contain?
According to Koch's Postulates, which postulate states that cells from a pure culture of the suspected organism should cause disease in a healthy animal?
According to Koch's Postulates, which postulate states that cells from a pure culture of the suspected organism should cause disease in a healthy animal?
What is the main reason 16S rRNA is suited for use as a molecular clock for bacterial evolution?
What is the main reason 16S rRNA is suited for use as a molecular clock for bacterial evolution?
What is the theory that living creatures could arise without parents?
What is the theory that living creatures could arise without parents?
Which enzyme is responsible for correction of mismatch by DNA polymerase III during DNA replication?
Which enzyme is responsible for correction of mismatch by DNA polymerase III during DNA replication?
What is the term for a change in a single base in DNA?
What is the term for a change in a single base in DNA?
Which type of mutation changes the open-reading frame of a gene?
Which type of mutation changes the open-reading frame of a gene?
What is the term for DNA segments that can hop from one place in the DNA to another?
What is the term for DNA segments that can hop from one place in the DNA to another?
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 term for a change in the amino acid sequence to another?
What is the term for a change in the amino acid sequence to another?
"Jumping genes" discovered by Barbara McClintock in corn are also known as:
"Jumping genes" discovered by Barbara McClintock in corn are also known as:
Which repair mechanism recognizes damage that distorts DNA structure and uses endonuclease to remove damaged bases?
Which repair mechanism recognizes damage that distorts DNA structure and uses endonuclease to remove damaged bases?
"Ku-family proteins bind broken ends" is a characteristic of which DNA repair mechanism?
"Ku-family proteins bind broken ends" is a characteristic of which DNA repair mechanism?
What is the term for a purine → pyrimidine or pyrimidine → purine change in a single base?
What is the term for a purine → pyrimidine or pyrimidine → purine change in a single base?
Which enzyme binds to a pyrimidine dimer caused by UV radiation?
Which enzyme binds to a pyrimidine dimer caused by UV radiation?
Which of the following is a characteristic feature of prokaryotic cells?
Which of the following is a characteristic feature of prokaryotic cells?
What is the shape of spirochetes?
What is the shape of spirochetes?
Which component gives Gram-positive bacteria their characteristic purple stain in the Gram stain test?
Which component gives Gram-positive bacteria their characteristic purple stain in the Gram stain test?
What is the primary source of energy for active transport?
What is the primary source of energy for active transport?
Which type of transport system combines active energy use with facilitated diffusion for sugar transport into the cell?
Which type of transport system combines active energy use with facilitated diffusion for sugar transport into the cell?
What distinguishes Sec-dependent secreted proteins in bacteria?
What distinguishes Sec-dependent secreted proteins in bacteria?
Which of the following best describes the role of the S Layer in Gram-positive bacteria?
Which of the following best describes the role of the S Layer in Gram-positive bacteria?
What is the main function of the thin cell wall in Gram-negative bacteria?
What is the main function of the thin cell wall in Gram-negative bacteria?
What is the role of safranin in the Gram stain test?
What is the role of safranin in the Gram stain test?
What happens when a gradient across a membrane is released?
What happens when a gradient across a membrane is released?
Which type of transport system requires energy input to move material against the concentration gradient?
Which type of transport system requires energy input to move material against the concentration gradient?
What distinguishes passive transport from active transport?
What distinguishes passive transport from active transport?
What is the primary reason for ribosomal DNA being a good choice for studying evolutionary time?
What is the primary reason for ribosomal DNA being a good choice for studying evolutionary time?
What was the endosymbiont theory for the evolution of mitochondria and chloroplasts?
What was the endosymbiont theory for the evolution of mitochondria and chloroplasts?
What is the function of the restriction/modification system in bacterial cells?
What is the function of the restriction/modification system in bacterial cells?
What is the primary role of RNA polymerase sigma factors?
What is the primary role of RNA polymerase sigma factors?
What is the general role of transcriptional regulators in a cell?
What is the general role of transcriptional regulators in a cell?
What are open reading frames in mRNA?
What are open reading frames in mRNA?
What is the mechanism of Rho-dependent transcriptional termination?
What is the mechanism of Rho-dependent transcriptional termination?
How does prokaryotic translation differ from eukaryotic translation?
How does prokaryotic translation differ from eukaryotic translation?
What is a mutant in biological terms?
What is a mutant in biological terms?
What are induced mutations primarily created by?
What are induced mutations primarily created by?
What is the function of the shine-dalgarno sequence in translation?
What is the function of the shine-dalgarno sequence in translation?
What is the primary role of plasmid curing as an evolutionary strategy?
What is the primary role of plasmid curing as an evolutionary strategy?
What is the impact of microbes on food availability?
What is the impact of microbes on food availability?
What is the theory of spontaneous generation?
What is the theory of spontaneous generation?
Which molecule is used as a molecular clock for bacterial evolution?
Which molecule is used as a molecular clock for bacterial evolution?
What did the theory of spontaneous generation propose?
What did the theory of spontaneous generation propose?
What is the function of Koch's Postulates in describing the role of microbes in diseases?
What is the function of Koch's Postulates in describing the role of microbes in diseases?
What distinguishes the molecular clock used for bacterial evolution?
What distinguishes the molecular clock used for bacterial evolution?
How are 16S rRNA and 18S rRNA suited as molecular clocks for bacterial and eukaryotic evolution, respectively?
How are 16S rRNA and 18S rRNA suited as molecular clocks for bacterial and eukaryotic evolution, respectively?
What is the primary function of the Shine-Dalgarno sequence in translation?
What is the primary function of the Shine-Dalgarno sequence in translation?
Which of the following describes the primary role of plasmid curing as an evolutionary strategy?
Which of the following describes the primary role of plasmid curing as an evolutionary strategy?
What is the mechanism of Rho-independent transcriptional termination?
What is the mechanism of Rho-independent transcriptional termination?
Which type of mutation changes the open-reading frame of a gene?
Which type of mutation changes the open-reading frame of a gene?
What distinguishes passive transport from active transport?
What distinguishes passive transport from active transport?
What is the main reason 16S rRNA is suited for use as a molecular clock for bacterial evolution?
What is the main reason 16S rRNA is suited for use as a molecular clock for bacterial evolution?
What is the function of the restriction/modification system in bacterial cells?
What is the function of the restriction/modification system in bacterial cells?
What is the primary role of RNA polymerase sigma factors?
What is the primary role of RNA polymerase sigma factors?
What are open reading frames in mRNA?
What are open reading frames in mRNA?
What is the term for a mutation that does not change the amino acid sequence?
What is the term for a mutation that does not change the amino acid sequence?
Which of the following enzymes binds to a pyrimidine dimer caused by UV radiation and cleaves the cyclobutane ring?
Which of the following enzymes binds to a pyrimidine dimer caused by UV radiation and cleaves the cyclobutane ring?
What is the term for segments of DNA that can hop from one place in DNA to another?
What is the term for segments of DNA that can hop from one place in DNA to another?
Which repair mechanism recognizes and repairs bases that do not distort DNA structure?
Which repair mechanism recognizes and repairs bases that do not distort DNA structure?
What is the coordinated set of responses to DNA damage called?
What is the coordinated set of responses to DNA damage called?
Which type of mutation changes the open-reading frame of a gene?
Which type of mutation changes the open-reading frame of a gene?
What is the primary purpose of the Ames Test?
What is the primary purpose of the Ames Test?
Which repair mechanism uses endonuclease to remove a patch of single-stranded DNA containing damaged bases, including dimers?
Which repair mechanism uses endonuclease to remove a patch of single-stranded DNA containing damaged bases, including dimers?
What is the term for a purine → pyrimidine or pyrimidine → purine change in a single base?
What is the term for a purine → pyrimidine or pyrimidine → purine change in a single base?
Which component binds to broken ends and is characteristic of a DNA repair mechanism?
Which component binds to broken ends and is characteristic of a DNA repair mechanism?
Which enzyme is responsible for the final transport of a substrate via conformational change of the transporter in ABC transporters?
Which enzyme is responsible for the final transport of a substrate via conformational change of the transporter in ABC transporters?
What is the name of the transport system that combines active energy use with facilitated diffusion for sugar transport into the cell?
What is the name of the transport system that combines active energy use with facilitated diffusion for sugar transport into the cell?
What is the term for the change in the amino acid sequence to another?
What is the term for the change in the amino acid sequence to another?
Which type of transport system actively transports a molecule in the opposite direction to the driving ion?
Which type of transport system actively transports a molecule in the opposite direction to the driving ion?
What is the term for DNA segments that can hop from one place in the DNA to another?
What is the term for DNA segments that can hop from one place in the DNA to another?
Which type of molecule tends to diffuse across the membrane in a process called osmosis?
Which type of molecule tends to diffuse across the membrane in a process called osmosis?
What is the name of the specific transporters that allow for diffusion of substrates across the membrane?
What is the name of the specific transporters that allow for diffusion of substrates across the membrane?
What distinguishes Gram-positive bacteria from Gram-negative bacteria in terms of their envelope characteristics?
What distinguishes Gram-positive bacteria from Gram-negative bacteria in terms of their envelope characteristics?
"Jumping genes" discovered by Barbara McClintock in corn are also known as:
"Jumping genes" discovered by Barbara McClintock in corn are also known as:
"Weak acids and bases exist partly in an uncharged form that can diffuse across the membrane." This statement best describes which concept in cellular transport?
"Weak acids and bases exist partly in an uncharged form that can diffuse across the membrane." This statement best describes which concept in cellular transport?
