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Chapter 1 - Cell Counting

by: KUMIKO Notetaker

Chapter 1 - Cell Counting A104

Marketplace > Republic Polytechnic > Applied Science > A104 > Chapter 1 Cell Counting
KUMIKO Notetaker
Lynette Liaw

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Hi guys! Hopefully my detailed note of lesson 1 is helpful for you!
Lynette Liaw
Class Notes
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This 5 page Class Notes was uploaded by KUMIKO Notetaker on Saturday September 12, 2015. The Class Notes belongs to A104 at Republic Polytechnic taught by Lynette Liaw in Summer 2015. Since its upload, it has received 36 views. For similar materials see Biology in Applied Science at Republic Polytechnic.

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Date Created: 09/12/15
ghapter 1 Cell Counting Scienti c Notation A way to write numbers in a standard form or a standard index form For examples a X 10 Where coef cient a is any real number the exponent bis an integer International System of Units SI It is the most widely used system of measurement It is the modern form of the metric system For examples the seven base units in the SI units are A K S m kg cd and mol NAME metre kilogram Second ampere kelvin mole ca ndela Imperial System Also known as British Imperial Some examples that are commonly used in the questions Unit Length Thou th Inch in Foot ft Yard yd Chain ch Furlong fur Mile mi Unit Volume SYMBOL m kg mol cd Relative to Previous 1000 thou 12inches 3 feet 22 yards 10 chains 8 furlongs Imperial Ounces MEASURE length mass time Electric current Thermodynamic temperature Amount of substance Luminous intensity Feet 112000 112 1 3 66 660 5280 Imperial pints DIMENSION Metres 00000254 OR 254 um 00254 03048 09144 201168 201168 1609344 Millilitres Fluid ounce oz 1 120 284130625 Pint pt 20 1 56826125 Quart qt 40 2 11365225 Gallon gal 160 8 454609 Unit Mass amp Grams Kilograms Pounds Weight Grain gr 006479891 1700 Ounce oz 28349523125 116 Pound lb 45359237 045359237 1 Stone st 635029318 635029318 14 Ton t 10160469088 2240 Metric System It is an internationally agreed decimal system of measurement Metric pre xes are commonly used SYMBOL TEXT tera g ga rnega kHo hecto deca none deci cenU n m n cn nano pico ngm l none n 3 quotC 3 P FACTOR 1 000 000 000 000 1 000 000 000 1 000 000 1 000 100 10 1 01 001 0001 0000 001 0000 000 001 0000 000 000 001 NonSI units such as minute hour and day are also used instead Noted 1 mm2 square millimetre 1 mm2 0001 m2 0000001 m2 1 km2 square kilometre 1 km2 1 mm3 cubic millimetre 1 mm3 0001 m3 1 km3 cubic kilometre 1 km3 1000 m3 1000 m2 1000000 m2 0000000001 m3 1000000000 m3 1 foot ft 03048 metres 1 pound lb x 0454 kilograms 1 gallon gal z 379 litres Note 1 litre 1 metre cube Practice Questions 1 1 Represent each of the following physical quantities in scienti c notation a 0000000321 b 1213 C 1589007 d 5156509 2 Convert each of the following physical quantities as indicated You may represent your answers in scienti c notation if they are numerically too big or small a 3 ft m mm b 25 gallon pintL c 99 kg lb d 150 mg g kg e 495 m2 mm2 cm2 f 600 mm3 cm3 m3 g 008 ms mms kmh h 7667 kgm3 gm3 gcm3 i 021 gcm3 gm3 kgm3 j 455 particlesL particlesml particlescm3 Angular Magni cation of the Microscope MA M0 X Me Where Mo is the magni cation of the objective and Me is the magni cation of the eyepiece Dilution The reduction in concentration of a solution 0 The process of diluting or mixing two or more compounds Dilution Factor DF 0 The magnitude through which a solution is diluted by Dilution factor C initial C nal Where C initial is the concentrated solution and C nal is the dilute solution Practice Question 2 1 Compute the total magni cation produced by a microscope as a result of the different combinations of ocular and objective lenses as shown below a 10x ocular and 90x objective lenses b 15x ocular and 3x objective lenses c 25x ocular and 100x objective lenses 1 A specimen is placed under a microscope with a total magni cation of 20x a Suppose this specimen was observed to be 0188 mm i What is the actual length in mm of this specimen ii What is the actual length in pm of this specimen b Suppose the actual length of 4 pm i What is the observed length in pm of this specimen ii What is the observed length in mm of this specimen 1 quotA solution of salt has a concentration 25 gLquot a What do you understand from this statement b Express your answer in gcm3 1 Suppose the concentration of sugar solution in a bottle is 600 sugar particlesL a Some of this solution is poured into a beaker What is the concentration of sugar solution in this beaker b How many sugar particles are present in 120 mL of the solution c What volume of this sugar solution will contain 280 sugar particles d What is the new concentration if it is diluted by 200x e What is the original concentration if the current concentration has been diluted by 90x a Express your answer in particlescm3 Learning Outcomes 1 Recognize and use units found in the Metric and Imperial System 2 Identify SI Metric measurement symbols 3 Use pre xes and their symbols to indicate decimal submultiples and multiples of the SI units 4 Perform unit conversions 5 Recognize the purpose of magni cation and dilution factors in experiments 6 Interpret the signi cance of numerical values in experiments and use them to solve reallife problems Need answers Feel free to drop me an email 15043445 myrpedusg


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