cytology - CELL QUESTION 1983: L. PETERSON/AP BIOLOGY...

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CELL QUESTION 1983: L. PETERSON/AP BIOLOGY Describe the fluid-mosaic model of a plasma membrane. Discuss the role of the membrane in the movement of materials through by each of the following processes. a. Active Transport b. Passive Transport STANDARDS: FLUID-MOSAIC MODEL : Max. = 9 points __ Singer/Nicholson or "differs from" Davson/Danielli __ Dynamic __ Phospholipid Bilayer __ Hydrophilic heads/hydrophobic tails and explanation __ Polar/Nonpolar __ Proteins - intrinsic/extrinsic __ Permeases (active + passive) __ Pores or apertures __ Functional "R" Groups __ Glycoproteins or carbohydrates (recognition) __ Diagrams appropriately used with explanation __ Selectivity TRANSPORT Max = 9 points PASSIVE TRANSPORT: __ Definition of Diffusion __ Osmosis __ Size of molecule / polarity __ Facilitated Diffusion __ Function of pores ACTIVE TRANSPORT: __ Definition __ ATP __ ATPase __ Na + /K + Pump __ Substances diffuse in-need transport out __ Carrier molecules and specificity
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CELL QUESTION 1984: L. PETERSON/AP BIOLOGY Describe the structure of a generalized eukaryotic plant cell. Indicate the ways in which a nonphotosynthetic prokaryotic cell would differ in structure from this generalized eukaryotic plant cell. STANDARDS: STRUCTURE , as part of the eukaryotic cell: DESCRIPTION: (1/2 point each) (1 point each) __ Cell Wall __ Cellulose __ Cell Membrane __ Protein/phospholipid or phospholipid bilayer __ Cytoplasm __ Fluid with dissolved substances __ Vacuole __ Protein/phospholipid or water __ Mitochondria __ Cristae, folding convolutions __ Ribosomes __ Two Subunits __ Golgi Bodies __ Phospholipid/protein, cisternae, vesicles __ Chloroplasts __ Stroma, grana, thylakoids __ Lysosomes __ Phospholipid/protein membrane or digestive enzyme __ Nucleus __ Double nuclear membrane or envelope __ Nucleolus __ RNA present, fibrillar __ Chromosome __ Double strand, DNA and Protein __ Plasmodesmata __ Cytoplasmic bridge __ Peroxisomes __ Membrane Bound __ Flagella __ 9 + 2 __ Microtubules, microfilaments __ Tubulin protein/actin protein MAX. = 4 points MAX. = 7 points TOTAL MAXIMUM = 10 points II. STRUCTURE COMPARISONS/DIFFERENCES of a simple cell and a complex cell. (2 points each pair / structure and comparison) __ Cell Wall __ No cellulose; murein present __ Cell Membrane __ No cholesterol __ Membrane-bound organelles absent __ Name one organelle __ OR AT LEAST 2: vacuole, mitochondria, __ Absent nucleus, E.R., lysosome, peroxisome, chloroplast __ AT LEAST 2: microtubules, microfilaments, __ Absent plasmodesmata __ Ribosomes __ Smaller, few, free floating __ Nuclear membrane __ Absent __ Genetic material __ Single, no protein, circular, plasmids __ Flagella __ No 9 + 2 BONUS: Elaboration: evolution, size, two additional structures and comparisons for each structure = one point each MAXIMUM = 10 points in Section II.
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CELL QUESTION 1987: L. PETERSON/AP BIOLOGY Discuss the process of cell division in animals. Include a description of mitosis and cytokinesis, and of the other phases of the cell cyle. Do not
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cytology - CELL QUESTION 1983: L. PETERSON/AP BIOLOGY...

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