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General Science
Microscopes, Nucleus, etc
| Question | Answer |
|---|---|
| In class, we discussed three different types of microscopes. What are the three types and how do they vary? | Light - See in color, overall low magnification Scanning - Outside image, Very high magnification Transmission - Inside, Very High Magnification |
| What is the procedure for using a microscope? How do you focus it on the highest setting? | Set the objective to the lowest setting Use course adjustment to see the image. Turn up objective power Adjust using coarse and fine Turn to the highest power and only use the fine adjustment |
| Identify the parts of the microscope below. | 1. Eye piece 2. Nose piece 3. Objectives 4. Stage Clips 5. Stage 6. Light Source 7. Base 9. Fine Adjustment 10. Course Adjustment 11. The arm |
| What are lipids? | Fats and Oils |
| What are some different type of lipids? | Saturated Fats and Unsaturated Fats |
| What are the characteristics of different lipids? | Saturated Fats - solid, straight structure, true fat (animals) Unsaturated Fats - Liquid, bent structure, true oil (plants) |
| What are the monomers of lipids? | Glycerol and 3 fatty acids |
| What makes up a triglyceride? | Glycerol and 3 fatty acids |
| How do you test for lipids? | Paper towel - + shiny grease spot - clear/transparent Ethanol - Oils and Fats float to the top |
| What part of the cell has lipids in it? | Cell Membrane |
| What are proteins? | Amino Acids, Enzymes |
| What are the monomers of proteins? | Amino Acids |
| What are enzymes? | Build molecules or break down molecules (lactase) |
| What do changing pH and temperature do to proteins? | The protein (Enzyme) stops working due to it beginning to break down. |
| Describe the shape of enzymes and the parts. | The active site is where the substrate will bind. |
| How is a function related to the shape of proteins? | The substrate has to fit into the cut out (active site) |
| What protein did we test in the lab? | Catalase |
| How did we test it? | We used hydrogen peroxide and it created bubbles. |
| What are the monomers of carbohydrates? | Simple carbs - Monosaccharides and Disaccharides |
| What is a polysaccharide? | A complex Carbohydrate |
| How are carbohydrates used in your body? | Short-Term energy (Burnt-1st) |
| What does water do to some polysaccharides? | Water breaks down polysaccharides (complex) into monosaccharides (simple) |
| How did we test for polysaccharides in the lab? | Iodine- +purple/blue - brown |
| How did we test for monosaccharides in the lab? | Benedict’s - Blue (none), Green (few), Orange (some, Red (a lot) |
| What are nucleic acids? | Molecules that give the instructions for your body. (The boss) |
| What are the nucleic acids? | DNA and the RNA |
| What makes up nucleotides? | A sugar, phosphate, and a base. |
| Why are nucleic acids important to your body? | Molecules that give the instructions for your body. |
| What bases bind together in DNA? | G-C and A-T |
| How did we test for the presence of DNA in the lab? | Saltwater, rubbing alcohol, soap -------------------- looked like small strands/white (transparent) |
Created by:
Cats0001
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