Microbiology notes
Micrbio Clicker questions:
1. Organisms that have a prokaryotic cell structure, no peptidoglycan in cell walls and unique cell membrane lipids would most likely be:
A. Archaea
2. Who first published extensive observations of microorganisms?
A. Anthony Von Leeuwenhoek
3. The primary use of Koch’s postulates is to?
A. Demonstrate that a disease is caused by a specific microorganism
4. Microscope resolution ____________ as the wavelength of radiation used to illuminate the specimen decreases. A decrease in the wavelength of radiation to illuminate the specimen results in a __________ resolving power value for the microscope!
A. increases, smaller
5. Living, unstained cells and organisms can be observed best using
A. Phase contrast microscopy
6. Acid- fast organisms such as mycobacterium tuberculosis resist decolorization by acid- alcohol solutions because of the high concentration of ___________ in their cell walls
A. Lipids
7. Which of the following best describes current understanding of the fluid mosaic model of membrane structure?
A. Phospholipid bilayer with peripheral and integral membrane proteins
8. Gram positive cells
A. Have multiple layers of peptidoglycan that are porous; the crystal violet stain is trapped when the peptidoglycan is dehydrated
9. Which of the following is NOT true of the nucleoid of prokaryotes?
A. It contains histone proteins
10. Which of the following statements about Endoplasmic reticulum (ER) is not true?
A. ER is found in all prokaryotic cells
11. The light reaction of photosynthesis is where?
A. photons from light are trapped in the thylakoid membranes of the grana to generate ATP, NADPH, and O2
12. In addition to the production of asexual spores, fungi can reproduce asexually by which of the following mechanisms?
A. All of the above are correct
- transverse fission of a parental cell
- fragmentation of hyphae whereby the component cells behave as spores
- budding
1. Organisms that have a prokaryotic cell structure, no peptidoglycan in cell walls and unique cell membrane lipids would most likely be:
A. Archaea
2. Who first published extensive observations of microorganisms?
A. Anthony Von Leeuwenhoek
3. The primary use of Koch’s postulates is to?
A. Demonstrate that a disease is caused by a specific microorganism
4. Microscope resolution ____________ as the wavelength of radiation used to illuminate the specimen decreases. A decrease in the wavelength of radiation to illuminate the specimen results in a __________ resolving power value for the microscope!
A. increases, smaller
5. Living, unstained cells and organisms can be observed best using
A. Phase contrast microscopy
6. Acid- fast organisms such as mycobacterium tuberculosis resist decolorization by acid- alcohol solutions because of the high concentration of ___________ in their cell walls
A. Lipids
7. Which of the following best describes current understanding of the fluid mosaic model of membrane structure?
A. Phospholipid bilayer with peripheral and integral membrane proteins
8. Gram positive cells
A. Have multiple layers of peptidoglycan that are porous; the crystal violet stain is trapped when the peptidoglycan is dehydrated
9. Which of the following is NOT true of the nucleoid of prokaryotes?
A. It contains histone proteins
10. Which of the following statements about Endoplasmic reticulum (ER) is not true?
A. ER is found in all prokaryotic cells
11. The light reaction of photosynthesis is where?
A. photons from light are trapped in the thylakoid membranes of the grana to generate ATP, NADPH, and O2
12. In addition to the production of asexual spores, fungi can reproduce asexually by which of the following mechanisms?
A. All of the above are correct
- transverse fission of a parental cell
- fragmentation of hyphae whereby the component cells behave as spores
- budding