The light-independant reactions of photosynthesis occur in the stroma of the chloroplast and involve the conversion of carbon dioxide and other compounds into glucose. The light-independent reactions can be split into three stages, these are carbon fixation, the reduction reactions and finally the regeneration of ribulose bisphosphate. Collectively these stages are known as the Calvin Cycle.
To attempt to quantify the effects of greenhouse gases on the global temperature, climatologists use the "" of the current atmospheric content of these gases.
How much sun does a seed need to sprout?
An issue of major concern is the possible effect of the burning of fossil fuels and other contributers to the in the atmosphere. The action of carbon dioxide and other in trapping infrared radiation is called the . It may measurably increase the overall average temperature of the Earth, which could have disastrous consequences. Sometimes the effects of the greenhouse effect are stated in terms of the of the Earth, the overall average reflection coefficient.
LCpro-SD Advanced Photosynthesis Measurement System
These are sketches of the graphs produced in the report of the increase in key greenhouse gases. They make clear that most of the increase of the last thousand years has occurred in the past 200 years. The of these gases is related to their concentration .
The new LCpro-SD has succeeded the LCpro+
cloth methodsThe effect of temperature on the percentage of germinationThe effect of tobacco and alcohol on seed germinationHow is germination and growth affected in plants rooted in soil after a forest fire?
IB Biology Notes - 8.2 Photosynthesis
Photosynthesis occurs inside chloroplasts. Chloroplasts contain chlorophyll, a green pigment found inside the thylakoid membranes. These chlorophyll molecules are arranged in groups called photosystems. There are two types of photosystems, Photosystem II and Photosystem I. When a chlorophyll molecule absorbs light, the energy from this light raises an electron within the chlorophyll molecule to a higher energy state. The chlorophyll molecule is then said to be photoactivated. Excited electron anywhere within the photosystem are then passed on from one chlorophyll molecule to the next until they reach a special chlorophyll molecule at the reaction centre of the photosystem. This special chlorophyll molecule then passes on the excited electron to a chain of electron carriers.
Plants make their own food thru the process of photosynthesis
The Mauna Loa monitoring station reports the carbon dioxide level in the atmosphere today as about 380 parts per million compared to 315 ppm in 1958 when modern measurements were initiated. Measurements of air bubbles trapped in the Greenland ice sheet indicate concentrations of 270 ppm in preindustrial times.
Climate Change: Vital Signs of the Planet: Evidence
Testing if Early Germination Gives an Edge to Algerian Sea LavenderCan anti-cancer agents, such as turmeric, pepper and ginger, used in food inhibit the germination and protein content in different plant seeds?