Texas Southern University - BIOL 347

Chapter 03

Microscopy and Cell Structure

Matching Questions

1)Which of the following best matches the description:

1. sterols              
2. endoplasmic reticulum            
3. flagella             
4. histones            
5. cytoskeleton                 
6. golgi apparatus             
7. mitochondria               
8. phagocytosis                
9. pili        

True / False Questions

2. Bacillus and Clostridium are medically relevant groups of bacteria that characteristically stain acid fast.

3. LPS is found in the outer membrane of Gram positive bacteria.

4. Drugs that target prokaryotic protein synthesis would have no effect on eukaryotic protein synthesis.

5. Penicillin affects the synthesis of phospholipids, thereby producing weak membranes and lysis of the bacteria.

6. Endospores are involved in bacterial reproduction.

7. Lysosomes are bags of digestive enzymes found in prokaryotic cells.

8. Smooth endoplasmic reticulum is involved in protein synthesis.

9. Mitochondria and chloroplasts are thought to have once been free living bacteria that invaded another cell.

10. Cilia and flagella project from the cell and are not covered by cytoplasmic membrane.

11. Prokaryotes may ingest particles via phagocytosis.

Essay Questions

12. Many drugs that target prokaryotic protein synthesis also adversely affect eukaryotic cells. Explain.

13. Explain why it is thought that mitochondria and chloroplasts are the remains of intracellular parasites.

14. What would happen if the cytoskeleton were to be frozen in place?