Biology Lab Exam Review PDF

**Biology Lab Exam Review** 1. Be able to do metric conversions. For example, how many grams are in 35 mg? The prefixes you will need to know are milli, micro, centi, and nano. What are the basic units for weight, linear and volume measurements? 2. Describe how to put away your micro...

**Biology Lab Exam Review** 1. Be able to do metric conversions. For example, how many grams are in 35 mg? The prefixes you will need to know are milli, micro, centi, and nano. What are the basic units for weight, linear and volume measurements? 2. Describe how to put away your microscope properly, and know what is used to clean the objective lenses. 3. We used a pipet to dispense the iodine in the diffusion lab. What volume does the smallest graduation on the pipet represent? Be sure to include the correct units. Please be familiar with the graduations on 10 mL and 5 mL pipets. 4. What is the function of the *Elodea* leaf parenchyma cells? 5. What are the colors of a positive Benedict's test? 6. What is the function of a red blood cell, and what do they look like under the microscope? 7. When starch is mixed with \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ a blue-black color results. 8. Starch is a polysaccharide of \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. 9. What is the big difference between a human red blood cell and an amphibian red blood cell in terms of organelles? 10. Name the function of the potato tuber parenchyma cell. Name the plastid found inside. 11. The green structures observed in the wet mount of the *Elodea* leaf are called \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. 12. The substance that was seen under the microscope from the potato tuber was s\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. A plastid called a \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ stores this material. 13. Name the function of the onion epidermal cell. 14. Name the boiling point of water in degrees C. 15. The random movement of the carmine suspension was due to \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ motion. 16. You did an experiment with a dialysis bag with 10 ml of starch and 10 ml of glucose in a dialysis bag. You added Lugol's iodine to the outside and let it sit for 15 minutes. Circle the substances that would be [outside] the bag. Starch, glucose, iodine 17. What does the Benedict's test detect? 18. What is the name of the enzyme that digests starch? 19. In certain plants, like the coconut, there is a type of thick walled cell called the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. 20. Name the plastid that is present in tomato parenchyma cells that is absent in onion epidermal cells. It has color and may attract pollinating insects. 21. Name several differences between plant and animal cells. 22. What does a protease digest? 23. Name one end product of starch digestion. 24. Know how to weigh an object with the correct units. 25. Is it ok to use the high power when on the coarse focus? 26. If a microscope has an 8X ocular and is on a 20X objective, what is the total magnification? 27. Why did we need to add hydrochloric acid (HCl) for the egg digestion? What is the name of the enzyme that digested the egg? 28. What is the monomer of a polysaccharide? 29. What is lignin? 30. What is the monomer of a polypeptide? 31. Know how to measure cells under the microscope using the correct units. 32. Know how to read a 10 ml pipette. 33. Define diffusion and osmosis. 34. What type of reactions break apart polymers? 35. Differentiate field of view vs. depth of field. 36. How would you know which areas are exposed to ultraviolet light if you observed the plates from the Scientific Investigations lab? 37. Be able to recognize the various types of cells we observed. Be able to identify key structures (nucleus, chloroplasts, cell membrane, nucleolus, etc.) 38. What is the general function of sclerenchyma cells? 39. What is the general function of parenchyma cells? 40. What is the general function of epidermal cells? 41. Be able to tell by the appearance of a cell if it has been placed in an isotonic, hypertonic or hypotonic solution. 42. What did the bubbles consist of in the photosynthesis lab? 43. What was the independent variable in the photosynthesis lab? What was the dependent variable? 44. What happened to the bubbles when the Elodea was moved a greater distance away from the light? 45. Which type of cells (parenchyma, sclerenchyma or epidermal) would a peach pit most likely contain? Which type of cells have thin walls that allow free transfer of materials between membranes of adjacent cells? 46. Know if a dialysis bag will gain or lose weight in an experiment similar to the one you performed in the osmosis lab. 47. What is the total magnification of the scan, low and high power lenses of the microscopes in our lab? 48. What happens to the magnification as the field of view increases? 49. What are all the parts of the microscope? 50. What type of reactions link monomers together? 51. In the scientific investigations experiment, what was the independent variable? What was the dependent variable? 52. What are some of the main advantages of a dissecting microscope? 53. What is a control in an experiment? 54. What are some differences between prokaryotic and eukaryotic cells? Are plant and animal cells eukaryotic or prokaryotic?