Microbiology Chapter 4 Test Bank

Which of the following statements is INCORRECT regarding prokaryotic cells? - They lack a plasma membrane Each of the following statements concerning the gram-positive cell wall is true EXCEPT- It protects the cell in a hypertonic environment Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl? - Water will move out of the cell A gram-positive bacterium suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to acquisition of new genetic information through- Conjugation By which of the following mechanisms can a cell transport a substance from a lower to a higher concentration? - Active Transport Which of the following is NOT a typical characteristic of most bacterial plasma membranes? - Contains Cholesterol Which one of the following organisms has a cell wall? - Fungi Which of the following statements is TRUE?- Endospores allow a cell to survive environmental changes by producing a dormant period with no growth Which of the following pairs is mismatched? - Centrosome - food storage (supposed to be vacuoles) Which of the following organelles most closely resembles a prokaryotic cell? - Mitochondrion Antibiotics that target cell wall synthesis ultimately cause bacterial cell death as a result of- Osmotic lysis Which of the following would most likely be used to lyse gram-positive bacterial cells for nucleic acid isolation? - Lysozyme - Bacteria are a commonly used organism for studies of genetic material in the research laboratory. The nucleic acids must first be isolated from the cells for these studies