cells and microscopesciencetoat.weebly.com/uploads/2/3/8/0/23803204/... · prokaryotic vs....
TRANSCRIPT
Cells and Microscope
Learning Goals
2
D 2 We are learning to investigate the principles of scientific classification
Success Criteria: I can…
- draw biological diagrams of representative organisms from each of the kingdoms
- classify collected organisms using proper taxonomy - use appropriate material & equipment safely, accurately, & effectively
3
Prokaryotic VS Eukaryotic
• What differences do you notice about the two cell types?
Prokaryotic VS Eukaryotic
• What differences do you notice about the two cell types?
Prokaryotic VS Eukaryotic
• What differences do you notice about the two cell types?
Prokaryotic VS EukaryoticProkaryotic Cell :
- Small and simple - Single circular strand of DNA
Eukaryotic Cells :- Organelles- DNA in a double membrane nucleus
Prokaryotic Vs. Eukaryotic
Prokaryotic Cellseg: Bacteria
Prokaryotic Vs. EukaryoticEukaryotic Cells (having true nucleus)
eg: Animal cells- Amoeba - Cheek
Prokaryotic Vs. EukaryoticEukaryotic Cells (having true nucleus)
e.g.. Plant cells- Onion skin
Prokaryotes Eukaryotes
Cell Organization
Nucleus
Components
Types
Size
A. Prokaryote? Eukaryote?
1. Prokaryote? Eukaryote? 2. What is it that tells you it’s a prokaryote? 3. What is the arrow pointing to?
12
B. Prokaryote? Eukaryote?
1. Prokaryote? Eukaryote? 2. What is it that tells you it’s a prokaryote or eukaryote?
13
14
C. Prokaryote? Eukaryote?
Work samples
20
Open to your homework1. Safety Sheet (hand in)2. Your NOTE with completed flow chart/numbered
steps of how to make a wet mount. 3. Answers to the questions regarding
prokaryote & eukaryote & membrane-bound organelles.
21
Using the Microscope ? Low rule (light, stage, power)? Magnification
22
Illustration Rules» Always use a pencil.» Always print.» Draw a circle to represent the microscope’s field of
view.» Label off to one side.» Use a RULER when labelling.» Add a title and state the observed magnification.» Draw cells at the BEST magnification (that which
shows the required detail).» With tissues or groups of cells, Illustrate only 3-5 cells
to get the gist.
23
» Everyone will need a white board…» Draw & label the following image.
Onion Cells
NOTE: The ocular magnification is 10X and the objective is 10X.
1
Measuring SizeMagnification 10 x 10 = 100x
1. Go to 100x magnification- (10 eye piece x 10 objective) 2. Use the scale of diameter = 1000 um 3. Estimate size
Onion Cells (100X)
Estimate the size of an onion cell.
Cheek Cells (100X)
Estimate the size of a cheek cell.
Paramecium Cells (100X)
Estimate the size of a Paramecium.
Elodea Cells (200X)
Estimate the size of a one Elodea cell.
30
Open to your homework1. Your NOTE with completed flow chart/numbered
steps of how to make a wet mount.