Physiological process - used by plants, algae + some bacteria
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Define 'Autotrophic nutrition'
Organisms use chemical energy to synthesis large organic molecules. Forming building blocks of living cells from simple inorganic molecules.
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List 2 examples of 'inorganic molecules'
Water + Carbon dioxide
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What are Organisms that photosynthesis called?
Photoautotrophs- use sunlight as the energy source.
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What is another word for 'Photautotrophs'?
'Produces'- they are beginning of food chain, provide energy, organic molecules to other non-photosynthetic organisms.
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What's the chemical equation for photosynthesis?
6CO2+ 6H20 (light energy) 6O2 + C6H12O6
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What is a 'Photon'?
A particle of energy. Each proton= an amount (a quantum) of energy
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What is the main product of photosynthesis + what can this be converted into?
Main product= Monosaccharide sugar + it's converted into= disaccharides for transport and then to starch for storage.
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Give one aspect photosynthesis is an example of?
Carbon fixation= process carbon dioxide is converted into sugars. The carbon for synthesising all types of organic molecules is provided by carbon fixation.
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What type of reaction is Carbon fixation (photosynthesis)?
Endothermic (needs energy). Carbon fixation requires electrons. The addition of electrons= reduction reaction.
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List 1 function of carbon fixation?
Helps regulate the Concentration of carbon dioxide in the atmosphere + oceans
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Define 'Heterotrophs.'?
Obtain energy by digesting complex organic molecules of food to smaller molecules that is then used for respiratory substrates.- Obtain energy from products of digestion by respiration.
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What type of reaction is respiration?
Exothermic- releases chemical energy
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What's the chemical equation for respiration?
C6H12O6+6O2=6H2O+6CO2+energy
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How does photosynthesis and respiration interrelate?
Both vital for cycling CO2 + O2 in atmosphere. Product of one process are the raw materials for the other process.
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Explain how photosynthesis and Respiration are interrelated?
Aerobic respiration removes O2 from atmosphere and adds CO2. Photosynthesis does the opposite.
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When does photosynthesis only happen?
During daylight
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Definition of 'compensation point'?
Rate of respiration + Rate of photosynthesis= equal
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Definition of 'Compensation period'?
Time a plant takes to reach its compensation point
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Why do some plants have a 'Shorter compensation point'?
Shade plants utilise light of lower intensity than sun plants can.- when exposed to light after being in dark, shade plants reach compensation point sooner= shorter compensation period
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What's the 'Endosymbion theory'?
Idea early eukaryotic engulf prokaryotic organism and become one. Evidence= mitochondria + Cyloplasts have own DNA and reproduce via binary fission
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Other cards in this set
Card 2
Front
Define 'Autotrophic nutrition'
Back
Organisms use chemical energy to synthesis large organic molecules. Forming building blocks of living cells from simple inorganic molecules.
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