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Bio 1 Chp.3 Test
| Question | Answer |
|---|---|
| How do you calculate TOTAL magnification for a lens on a microscope? | Multiply the eyepiece (10X) by the power of the objective |
| What materials are needed to make a wet mount slide? | iodine, glass slide, cheek cells, toothpick, slide cover, and onion cells |
| List in order from smallest to largest: Cell,Atom, Organelle, Molecule, Organism | Atom, Molecule, Organelle, Cell, Organism |
| What does the Cell Theory state? | -All organisms are made of cells -All cells are produced by other living cells -Cells are the most basic unit of life |
| What are the differences and similarities between Prokaryotic and Eukaryotic cell? What are examples of each? | -They both have DNA EU- have a nucleus and membrane-bound organelles (can be multi- or uni-cellular PRO- have NO nucleus or membrane bound organelles (Uni-cellular only) |
| What cell organelle produces ATP? | Mitochondria |
| What are some differences between plant and animal cells? | Type of organelles (Plant cells have chloroplasts, a larger vacuole, & a cell wall, while animal cells don't) |
| What do ribosomes look like? Where are they found and what are their functions? | Ribosomes look like studs or dots and are found in the rough ER and the cytoplasm. They link amino acids together to form proteins. |
| What is the function of the chloroplasts? What biological process occurs in this organelle? | Chloroplasts make energy through photosynthesis |
| What does the central vacuole of a plant due? | Stores water and other materials |
| The cell membrane helps to maintain homeostasis. Explain this process. | The membrane controls what goes in and out of the cell through active and passive transport. |
| What is a phospholipid? Which part "likes" water and which part doesn't. | Phospholipids make up the cell membrane. The polar phosphate head likes water and the non-polar lipid tail hates water. |
| How are phospholipids arranged in the cell membrane? | They are in a phospholipid bilayer (two layers of them) |
| What is diffusion? | The movement of molecules down a concentration gradient from high to low concentration. |
| During diffusion, substances always move from an area of ________ concentration to an area of ___________ low concentration. | High, Low |
| What is Osmosis? Is this a type of active or passive transport? | The diffusion of water. It's a type of passive transport. |
| What is the main difference between active and passive transport? (Think Energy) | Active transport requires energy while passive transport doesn't. |
| What is facilitated diffusion? | Diffusion through transport proteins since some molecules can't easily cross the membrane. |
| What's the function of a transport protein? | To create a channel for polar molecules to cross the membrane. |
| What is endocytosis? What is exocytosis? | Endocytosis - When the membrane encloses the material Exocytosis - When the material fuses with the membrane & gets released |
| The dialysis tube lab/demo showed an example of what type of passive transport? | Diffusion |
| What did the dialysis tube represent? | The cell membrane |
| Did the starch move through the dialysis tubing? Yes or no? Why or why not? | No. It was too large to fit through the pores in the tube |
| Why did the starch solution turn colors? What color did it change? | The iodine moved into the bag and it turned purple. Starch is an indicator of iodine and the color change indicated when they mixed. |
| Did the iodine in the beaker change colors? Yes or no? Why or why not? | Starch wasn't present in the beaker because it didn't diffuse out of the tube |
Created by:
alldyn.sch
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