ge 1 Study Guide covers all Topics after the first Test in two pages; Any new To
ID: 273360 • Letter: G
Question
ge 1 Study Guide covers all Topics after the first Test in two pages; Any new Topic should be completed in class before the Test date. A. Compare how Imperial and Metric Systems Measure: (a) Size (b) Weight (c) Volume Determine how these Metric sub-units are related and learn their symbols: B. (a) Dec (b) Centi (c) Micro (d) Nano-(e) M (f) Pico- C. Select suitable Metric sub-units to measure sizes of:- (i) Cells ii) Bacteria & Yeast (iii) DNA or Genetic materials v) Viruses A. Recall Scientists associated with invention of today's Microscope:mpare featru B. Review and compare features of a Simple and Compound Microscopes c. Label Microscope Parts and find out what they do A. List requirements for magnification B. Identify all lenses of a Compound Microscope C. Name Objective lenses, their magnifying powers, and color codes. D. Calculate Total Magnification A. Define Resolution, Useful, and Empty Magnification B. Calculate by how much Resolution is boosted by these Objective Lenses: (i) x4 lens i)x10 lens x40x lens(iv) x100 (A) Human Eye (Normal vision) (C) Scanning Electron Microscope (SEM) (B) Light Microscope (LM D) Transmission Electron Microscope (TEM)Explanation / Answer
1. UNITS OF MEASUREMENT:
a. SIZE- Imperial system measures size in acre whereas the metric system measures it in square metres.
b. WEIGHT- Imperial sytem measures weight in pounds whereas the metric system measures it in kilograms, miligrams etc.
c. VOLUME: IMperial system measures it in ounces, gallons, pint, quart whereas metric system measures it in mililitres, cubic centimetres etc.
B. a. Deci- the symbol is d and is of the factor 10-1.
b, Centi- the symbol is c and is of the factor 10-2
c.Micro - The symbol is µ and is of the factor 10-6
d. Nano- The symbol is n and is of the factor 10-9
e. Mili- The symbol is m and is of the factor 10-3
f. Pico- The symbol is p and is of the factor 10-12
C. i. Cells- They can range in µm.
ii. Bacteria and yeast- They range in micrometres or µm.
iii. DNA or genetic materials- They are of nanometres in size or nm.
iv. Viruses- They are of nanometres in size or nm.
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