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PhotoSynthesis. Photosynthesis When you and me eat, we find our food. ... They make
their food and energy through a process called photosynthesis. ...
rate of photosynthesis. The ... carriers. The rate of photosynthesis will always
correspond to that factor which is in least supply. ...
rate of photosynthesis. The ... carriers. The rate of photosynthesis will always
correspond to that factor which is in least supply. ...
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Process of Photosynthesis. Process of Photosynthesis ... Photosynthesis provides the
basic energy source for virtually all organisms. An extremely important ...
Submitted by mujtabaz on March 18, 2005
Category: Science
Words: 1795 | Pages: 8
Views: 463
Popularity Rank: 21,050
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Organisms Depend Upon Photosynthesis
A. Organisms Depend Upon Photosynthesis
1. Photosynthetic organisms (algae, plants and a few other organisms) serve as ultimate source of food for most life.
2. Photosynthesis transforms solar energy into chemical bond energy of carbohydrates.
3. Most food chains start with photosynthesizers.
Solar Radiation
Key Discoveries of Photosynthetic Process
Structure of Chloroplasts
Function of Chloroplasts
A. Solar Radiation
1. Solar radiation is described in terms of its energy content and its wavelength.
2. Photons are discrete packets of radiant energy that travel in waves.
3. The electromagnetic spectrum is the range of types of solar radiation based on wavelength.
a. Gamma rays have shortest wavelength.
b. Radio waves have longest wavelength.
c. Energy content of photons is inversely proportional to wavelength of particular type of radiation.
1. Short-wavelength ultraviolet radiation has photons of a higher energy content.
2. Long-wavelength infrared light has photons of lower energy content.
3. High-energy photons (e.g., those of ultraviolet radiation) are dangerous to cells because they can break down organic molecules by breaking chemical bonds.
4. Low-energy photons (e.g., those of infrared radiation) do not damage cells because they do not break chemical bonds but merely increase vibrational energy.
d. White light is made up of many different wavelengths; a prism separates them into a spectrum.
4. Only 42% of solar radiation that hits earth's atmosphere reaches surface; most is visible light.
a. Higher energy wavelengths are screened out by ozone layer in upper atmosphere.
b. Lower energy wavelengths are screened out by water vapor and CO2.
c. Consequently, both the organic molecules within organisms are processes, such as vision and...
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