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Bio; Unit 2 Cells
The study guide written questions and answers.
| Essay Questions | Answers |
|---|---|
| Explain the 3 parts of cell theory. | All organisms are made up of one or more cells. The cell is the smallest unit that has properties of life. Cells arise only from the growth and division of preexisting cells. |
| Identify the parts of a compound microscope. How are they different from a TEM and SEM microscope. | (slide) for compound identification. SEM scans the surface for 3D imaging. TEM transmits electrons through a thin sample to show 2d details. |
| Be able to differentiate between a Eukaryotic cell and Prokaryotic cell. | Pro - has no nucleus. Lacks some organelles. Not found in humans. Always unicellular. Eu- Has a true nucleus. Doesn't lack organelles. Found in humans. Often multicellular. |
| Be able to differentiate between a plant and animal cell. | Plant - has chloroplasts and vacuoles. Can absorb liquids. Creates food by photosynthesis. Cell wall is made of cellulose. Animal - Eats other cells. Has no cell wall. Can't absorb much liquid. |
| Be able to label plant cell and or animal cell (nucleus, nuclear membrane, chromatin, Rough ER, smooth ER, mitochondria, chloroplasts, golgi complex, plasma membrane, cell wall, cilia, flagella, centrioles, and central vacuole). | (Slides) |
| PART 1; Explain how a protein is initially produced by a ribosome and travels through the endomembrane system from Rough ER, to Golgi Complex, to secretory vesicle and out of the cell. | ribosomes are synthesized on the rough ER. they will fold into a functional shape and then transport to the golgi to be properly folded, sorted and then tagged for the final destination. |
| PART 2; Explain how a protein is initially produced by a ribosome and travels through the endomembrane system from Rough ER, to Golgi Complex, to secretory vesicle and out of the cell. | Then they are packaged into the secretory vesicle and travel to and fused with the plasma membrane, which releases the contents outside of the cell. |
| Describe the function of Fluid Mosaic Model. | Proteins are embedded into the double layer of phospholipids, the bilayer's fluid matrix, which allows the movement of proteins within it. |
| Contrast between osmosis and dialysis. | Osmosis is the movement of water, where as dialysis is the separation of smaller solute molecules. |
| Explain how water flows across a selectively permeable membrane using terms isotonic, hypertonic, hypotonic by explaining how concentration differences of both water and the substances dissolved in it contribute to this movement. | Hypertonic; high solute/low water Hypotonic; low solute/high water Isotonic; equal solute/equal water Water chases the higher concentration of solutes to dilute it. |
| Compare and contrast facilitated transport and active transport. | Facilitated transport is passive, no energy. Active transport requires ATP energy to move substances against their concentration gradient. |
| PART 1; Define, describe, and/or cite examples of endocytosis and exocytosis , including phagocytosis, pinocytosis, and receptor mediated endocytosis. | Endocytosis is moving materials into the cell, such as phagocytosis which engulfs large solid particles. Pinocytosis is the cell membrane folding inward to take in the small droplets of extracellular fluid. |
| PART 2; Define, describe, and/or cite examples of endocytosis and exocytosis , including phagocytosis, pinocytosis, and receptor mediated endocytosis. | Receptor Mediated is specific molecules binding to receptors on the membrane surface, triggering it to pinch inward to capture them. Exocytosis is moving material out of the cell. |
Created by:
charlidobson
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