Which of the following is not a distinguishing characteristic of prokaryotic cells?
they lack a plasma membrane
which statement best describes what happens when a gram positive bacterium is placed in distilled water and penicillin?
the cell will undergo osmotic lysis
Which statement best describes what happens when a gram negative bacterium is placed in distilled water and penicillin?
Water will move into the cell
Which statement best describes what happens when a gram-positive bacterium is placed in an aqueous solution of lysozyme and 10% sucrose?
No change will result: the solution is isotonic
Which of the following statements best describes what happens to a cell exposed to polymyxins that destroy phospholipids?
Intracellular contents will leak from the cell
Which of the following is false about fimbriae?
they may be used for motility
which of the following pairs is mismatched?
pili-reproduction
which of the following pairs is mismatched?
ribosomes-protein storage
You have isolated a motile, gram-positive cell with no visible nucleus. You can assume this cell has
ribosomes
The antibiotic amphothericin B disrupts plasma membranes by combining with sterols: it will affect all of the following cells except
gram-negative bacterial cells