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Biology Review #6

TermDefinition
Variation [Beaks of Finches] Allows for adaptation.
Niches [Beaks of Finches] A particular placement in an environment that is the result of different characteristics. This leads to less competition.
Competition [Beaks of Finches] Is based on food preferences, not physical characteristics.
Survival [Beaks of Finches] Is also based on characteristics such as agility, eyesight, speed, aggression, & coordination.
Physical Characteristics [Botana Curus] What is looks like. DOES NOT indicate similarity.
Molecular Characteristics [Botana Curus] Enzymes & other proteins, DNA & pigments. Are a BETTER indicator of similarity.
Chromatography [Botana Curus] Separates a mixture based on attraction to the stationary medium (paper) vs. the mobile medium (water).
Gel Electrophoresis [Botana Curus] Separates DNA or protein based on size & charge using electricity. Smallest pieces travel farthest and negative pieces are attracted to the positive charge.
Tests to Support the Hypothesis [Beaks of Finches] -Testing for a different enzyme. -USe a different amino acid sequence. -Use a different DNA sequence, or examine parts of the plant other than the seeds, stem, & flower.
Increased Activity [Clothespin] Causes an increase in heart rate & respiration rate.
Increased Heart Rate [Clothespin] Allows more oxygen & nutrients to perfuse tissue & remove wastes & CO₂.
Increased Respiration [Clothespin] Rate allows more O₂, & CO₂ to be exchanged.
Sugar [Diffusion] Tested with Blue Benedict's solution / wet bath. Result = Orange / Red. Diffused because it is small. Monomer, simple sugar.
Starch [Diffusion] Tested with Amber Iodine. Result = Blue / Black. Did not diffuse because it is big... small Iodine diffused. Polymer of sugars to make a complex carbohydrate.
Extra Information #1 [Diffusion] -Starch & glucose were put in the cell, iodine (starch indicator) & water were outside the cell. -Glucose diffused out, iodine and water diffused in, starch CAN NOT diffuse.
Extra Information #2 [Diffusion] -Liquids may be drawn through a wet mount with a paper towel on the opposite side. -Onion cell in salt solution shrivels as water diffuses out. Cell wall stays the same, but the membrane & cytoplasm shrunk. -The cell is "revived" if water is applied.
Created by: tderue
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