Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
Labeling the parts of the microscope activity:http://www.biology.ualberta.ca/facilities/multimedia/uploads/intro-biology/microscope.html
Image from wikimedia commons: http://commons.wikimedia.org/wiki/File:Microscope-blank.svg
MagnificationThe image we see through the light microscope has been magnified.
Objective lensx eyepiece lens
Modern Microscopy
Image: d2540-6 by USDA on Flickr (CC): http://flic.kr/p/dPqvvY
Modern Microscopy
Image: d2540-6 by USDA on Flickr (CC): http://flic.kr/p/dPqvvY
As we develop more and more sophisticated and precise imaging tools, we can see more detail of the cells and molecules that make us.
Scanning electron microscopes deliver high-resolution, 3D surface images of structures, whereas transmission electron microscopes give us a view inside cells and organelles.
Emiliana huxleyi
Image from: http://earthguide.ucsd.edu/earthguide/imagelibrary/emilianiahuxleyi.html
Transmission electron micrograph of HIV particles.
HIV-1. Transmission electron micrograph, via wikimedia commons: http://commons.wikimedia.org/wiki/File%3AHIV-1_Transmission_electron_micrograph_AIDS02bbb_lores.jpg
120nm
False-coloured scanning electron micrograph of HIV (green) budding on a lymphicoyte (blue) http://en.wikipedia.org/wiki/File:HIV-budding-Color.jpg OR http://phil.cdc.gov/phil/details.asp?pid=10000
1μm
Scanning electron micrograph of HIV particles budding on a human lymphocyte.
Unicellular Organismscarry out all the functions of life
M ovementR espirationS ensitivity
G rowthR eproductionE xcretionN utrition
Paramecium bursariaby Proyecto Agua on Flickr (CC) http://flic.kr/p/7WXdFz
Given the right conditions, cells can survive outside their normal habitat.
Art from Petri dishes_1 by Image in Science and Art on Flickr (CC) http://flic.kr/p/838xjC
VIRUSESAre they living or non-living?
Hmm…..
Image: Swine Flu H1N1 virus influenza 9.0 by hitthatswitch on Flickr (CC) http://flic.kr/p/74e4SP
Some units that I use & know
Unit abbr. Metric equivalent
kilometer km 1,000m 1 x 103m
meter m 1m 1m
centimeter cm 0.01m 1 x 10-2m
millimeter mm 0.001m 1 x 10-3m
micrometer μm 0.000 001m 1 x 10-6m
nanometer nm 0.000 000 001m 1 x 10-9m
÷1,000
÷1,000
÷1,000
X 1,000
μm = micrometersWe usually use this in discussion of cells.
There are 1,000μm in one mm.
write this correctly