Class Notes (1,050,142)
CA (601,112)
York (42,478)
BIOL (2,723)
BIOL 1000 (466)
Lecture 3

BIOL 1000 Lecture Notes - Lecture 3: Cell Theory, Electromagnetic Spectrum, Rickets

14 pages65 viewsWinter 2013

Department
Biology
Course Code
BIOL 1000
Professor
Nicole Nivillac
Lecture
3

Page:
of 14
Light in Aquatic Habitats
Aquatic habits have altered light environments
Water rapidly attenuates longer wavelengths
(red) of light
Below 30 m, only blue wavelengths of light
penetrate
Below about 150 m, there is total absence of
light
So what do you think happens to the coloring
of species are you get deeper and deeper?
Organisms Making Their Own Light:
Bioluminescence
Range of organisms can use chemical energy
to make light referred to as bioluminescence
Bio = living Lumen = Light
Bioluminescent organisms use light to:
Attract a mate
Camouflage
Attract prey
Communicate

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.