Lab 7 quiz
What roles do carbon dioxide and oxygen play in photosynthesis?
Plants extract the carbon dioxide from the air and use it in the photosynthesis process to feed themselves. The carbon dioxide enters the leaves of the plant through the small pores called stomata. Once the process is done, the plant releases oxygen into the surrounding air.
Low energy waves
long wavelengths
High energy waves
short wavelengths
Purple wavelengths
400 nm
Visible light
400-700 nm
Blue wavelengths
500 nm
Yellow wavelengths
600 nm
Red Wavelengths
700 nm
Plants
are photosynthetic, they are able to use energy from the sunlight and build energy-rich molecules (sugars). Plants can convert light energy into chemical energy.
Other factors that can affect photosynthesis
brightness intensity of light the temperature the amount of CO2
Equation for photosynthesis
Energy (light) + 6CO2 + 6H2O ------> C6H12O6 (sugar) + 6O2
Based on your current knowledge of photosynthesis and chlorophyll, which colors do you hypothesize will result in the highest rate of photosynthesis (red, green, and/or blue)?
Green will have the lowest rate of photosynthesis because it is reflected by the leaves of plants and red will have the highest rate of photosynthesis.
The more energy absorbed
The faster the rate of photosynthesis
Chloroplast
The organelle in the cell where the process of photosynthesis takes place.
Chlorophyll
The pigment located within the chloroplast that absorb the light.
Why are the leaves of most plants, which contain many chloroplasts, green?
They contain a pigment called chlorophyll. Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. Green light is not absorbed but reflected making the leaves look green. Chlorophyll is found in the chloroplasts of plants.
Chlorophyll a and b
two types of chlorophyll located in the chloroplasts of plants. Each absorbs specific wavelengths of light, but mostly they are red and blue wavelenghts