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300 200 100 CellsMembranes 300 200 100 Potpourri DOUBLE JEOPARDY! DOUBLE JEOPARDY!

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Cells for 100 Why are cells limited to such small sizes? As cells grow larger, the volume grows faster than the surface area. Therefore, the nutrient needs of the organelles that make up the volume of the cell outpace the ability of a cell to take in nutrients across the surface of the cell membrane.

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Cells for 200 Name the function of each of the following cellular components. Microtubule Determine cell shape Serve as tracks for intracellular movement Extracellular movement as part of cilia and flagella Microfilament Increase surface area as part of microvilli Enable muscle contraction Nucleolus Produce ribosomes

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Cells for 300 What are three pieces of evidence supporting the endosymbiotic theory? 1. M&C have their own DNA in single, circular chromosomes 2. M&C have their own ribosomes which are similar to prokaryotic ribosomes 3. M&C have a double lipid bilayer that resulted from endocytosis 4. M&C reproduce on their own via binary fission 5. M&C are similar in size to prokaryotic cells

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Membranes for 100 What are TWO ways that membrane structure can be altered to prevent solidification in cold temps? More unsaturated fatty acids in phospholipids will prevent clumping and loss of flexibility of the membrane Cholesterol in animal membranes will prevent phospholipid clumping as well.

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Membranes for 200 What type of organism might have a contractile vacuole, and where might it live? Single-celled protist A hypotonic environment (lake, pond, river, stream)

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Membranes for 300 What is the difference between carrier proteins and channel proteins? Carrier the protein binds to a particle, changes shape, and moves it across the membrane Channel the protein opens a pathway for movement through the membrane

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Potpourri for 100 List three effects of a Na-K pump on a cell. Builds up concentration of Na+ outside a cell. Builds up concentration of K+ inside a cell. Builds up an electrochemical gradient.

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Potpourri for 200 Give two differences between gap junctions and plasmodesmata. Gap junctionsPlasmodesmata Animal cellsPlant cells A few small pathwaysMany large pathways

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Potpourri for 300 For each protein below, would it have been produced by a free or bound ribosome? A) InsulinBound B) Tubulin (unit of mitotic spindle)Free C) Digestive enzyme in lysosomeBound

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600 400 200 CellsMembranes 600 400 200 Potpourri FINAL JEOPARDY! FINAL JEOPARDY!

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Cells for 200 What material makes up the internal structure of a flagellum? microtubules

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Cells for 400 What is the purpose of the mitotic spindle? These microtubules serve as guides for movement of chromosomes during cell division

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Cells for 600 If a ribosome moves to the ER as it works, what might be its ultimate product? A membrane protein A secreted protein A lysosome

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Membranes for 200 A paramecium has a contractile vacuole. What must be true of its environment if the vacuole empties very infrequently? Only a slightly hyptonic environment

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Membranes for 400 A cell just experienced an increase in temperature in relation to its isotonic surroundings. How will this affect the osmotic flow of water? It decreases the solute potential, so it increases the likelihood that water will flow into the cell.

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Membranes for 600 What are two functions of membrane proteins other than transport?

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Potpourri for 200 Why do liver cells have large amounts of smooth endoplasmic reticulum? Its helpful in one of the main functions of the liver detoxification.

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Potpourri for 400 What impact will a phosphatase have on signal transduction? It will dephosphorylate a molecule. This stops signal transduction.