Biology+Midterm+Study+Guide

# Biology+Midterm+Study+Guide - Biology Midterm Study Guide...

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Biology Midterm Study Guide Gabriela Martinez 2008

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Microscope Unit of measurement= micrometer Micrometer=µm 1 millimeter= 1000 micrometers Microscope Questions: Mic: Eye 5x Scan 4x Low 8x High 12x 1. Find the Total Magnification a. Scanning power= 5*4: 20 b. Low power= 5*8: 40 c. High power= 5*12: 60 2. Find the Field of View (FOV): Ex. 1: Field of View: ≈ 3 µm or 3000 millimeters 3. Make a chart: Mag FOV Constant 20x 3000 60,000 40x 1500 60,000 60x 1000 60,000 2 To find the total mag: Multiply the eyepiece with the chosen objective 1µm
1. What would be the size of this organism (on high: 40x ) if the FOV on scanning power (total mag: 3x) looked like this: Mag FOV Constant 4x 3000 12,000 40x 300 12,000 - An object viewed through the microscope will appear rotated 180 degrees -Ex. - The larger the magnification= the smaller the FOV 3 On scanning the FOV= 3000 µm. MAKE A CHART -The FOV on high is: 300 µm. - The organism takes up approx. 1/3 - 1/3 of 300= 300/3= 100 -The organism is 100 µm QuickTime and a TIFF (Uncompressed) decompressor are needed to see this picture. QuickTimeOE and a TIFF (Uncompressed) decompressor are needed to see this picture.

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Scientific Method Scientific method: the procedure to determine the validity of scientific ideas Steps: 1. Observation 2. Identify the problem 3. Hypothesis 4. Experiment 5. Analyze the data 6. New hypothesis What: Describe Why: Explain Narrow: Specific Observation Hypothesis Broad: General Law Theory -Observations are DATA in an experiment ****Observation- quantitative**** or qualitative Or Inference- logical guess (not observed, figured out) Observation**** vs. Inference 1. More reliable 1. Opinion 2. People will agree 2. People probably wont agree Ex. “The grass is green” Ex. “The grass is hideous” Quantitative vs. Qualitative 1. Amount 1. Words 2. “The painting is 13’ x 9’” 2. “The painting is on canvas” Controlled experiment- 4
Control (group)- the standard by which comparisons are made -No control group in Medicine - Placebo effect- fake medicines taken within a group of people “The purpose of modern medicine is to amuse the patient while the body heals

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## This note was uploaded on 05/18/2010 for the course BICD BICD 110 taught by Professor Zao during the Spring '09 term at UCSD.

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Biology+Midterm+Study+Guide - Biology Midterm Study Guide...

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