Podcast
Questions and Answers
What is the function of the cell membrane?
What is the function of the cell membrane?
- To provide rigidity to the cell
- To synthesize proteins
- To enclose the cytoplasm (correct)
- To store genetic material
Which part of a bacterial cell contains the chromosome in the form of looped coils?
Which part of a bacterial cell contains the chromosome in the form of looped coils?
- Cytoplasm (correct)
- Cell wall
- Flagellum
- Cell membrane
What is a distinguishing feature of archaea compared to bacteria and eukaryotic cells?
What is a distinguishing feature of archaea compared to bacteria and eukaryotic cells?
- Presence of a nucleus
- Lack of ribosomes
- Unique membrane and envelope structures (correct)
- Absence of flagella
Which characteristic is common to all cells in terms of their chemical components?
Which characteristic is common to all cells in terms of their chemical components?
What is the main function of the phospholipid in the cell membrane?
What is the main function of the phospholipid in the cell membrane?
Which type of bacteria has a thick cell wall?
Which type of bacteria has a thick cell wall?
What is one characteristic of Gram-negative cell envelopes?
What is one characteristic of Gram-negative cell envelopes?
What is the function of a capsule in bacterial cells?
What is the function of a capsule in bacterial cells?
Which specialized structure is responsible for CO2 fixation in bacteria?
Which specialized structure is responsible for CO2 fixation in bacteria?
What is the main component of pili in bacteria?
What is the main component of pili in bacteria?
What is the main function of the cell wall in bacteria?
What is the main function of the cell wall in bacteria?
Which group of prokaryotes has a cell membrane without outer layers?
Which group of prokaryotes has a cell membrane without outer layers?
What is the main component of most bacterial cell walls?
What is the main component of most bacterial cell walls?
Why are enzymes responsible for peptidoglycan biosynthesis good targets for antibiotics?
Why are enzymes responsible for peptidoglycan biosynthesis good targets for antibiotics?
What is the purpose of additional envelope layers in most bacteria?
What is the purpose of additional envelope layers in most bacteria?
What is the function of sex pili in Gram-negative enteric bacteria?
What is the function of sex pili in Gram-negative enteric bacteria?
How do flagella function in chemotaxis when exposed to attractants?
How do flagella function in chemotaxis when exposed to attractants?
What effect do repellents have on the rotation of flagella during chemotaxis?
What effect do repellents have on the rotation of flagella during chemotaxis?
What happens when a bacterium undergoes a 'biased random walk' during chemotaxis?
What happens when a bacterium undergoes a 'biased random walk' during chemotaxis?
What process does bacterial cell division involve as DNA synthesis terminates?
What process does bacterial cell division involve as DNA synthesis terminates?
What is the function of the two layers of phospholipids in the cell membrane?
What is the function of the two layers of phospholipids in the cell membrane?
Which process allows small uncharged molecules like O2 and CO2 to easily permeate the cell membrane?
Which process allows small uncharged molecules like O2 and CO2 to easily permeate the cell membrane?
What type of transport mechanism do polar molecules and charged molecules require to pass through the cell membrane?
What type of transport mechanism do polar molecules and charged molecules require to pass through the cell membrane?
How do molecules move during passive transport across the cell membrane?
How do molecules move during passive transport across the cell membrane?
Which type of transport across the cell membrane requires energy in the form of ATP?
Which type of transport across the cell membrane requires energy in the form of ATP?
