Autotrophic Heterotrophic:
Autotrophs can make their own Food (Glucose)
Plant, algae, and some bacteria
2 types of autotrophic nutrition
Chemo synthesis
* Uses chemicals like
Sulfur and Nitrogen to make its’ own food
Photosynthesis
*Uses sunlight, CO2
And water to create usable form of energy
(sugar).
**Uses 2 reactions
a. Light reaction
b. Dark reaction
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Cannot produce their own food
Re: Ingest, digest, egest
All Animal and fungi, some bacteria
Types of Digestion:
1. Mechanical/physical Digestion
2.Chemical Digestion
Where it Takes place:
• Intracellular Digestion: occurs within the cell
• Extracellular Digestion : occurs outside of cells, within an organ(s)
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Photosynthesis and Wavelengths
Photosynthesis:___________________________________________________
Basic Reaction: Products and Reactants
_______+_______+ _______
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__________+ _______ + _______
It is composed of two major reactions.
1. __________ reaction, aka __________
2. __________ reaction, aka __________, or light independent phase
USES ATTACHED DIAGRAM TO FOLLOW THE PHOTOSYNTHETIC REACTIONS!!
Light Reaction
Use of light energy to generate two high-energy compounds, ATP and NADPH2
1) ATP a) When light is absorbed by chlorophyll, some of its electrons become excited and leap out of the chlorophyll molecule, grabbed by energy receptors. b) The energy of these electrons is used to make ATP from ADP + Pi
•2) NADPH2
•a) When light is absorbed by chlorophyll, some of its electrons become excited and leap out of the chlorophyll molecule, grabbed by energy receptors. b) These electrons are then used to convert NADP+ to NADPH2
•3) The lost electrons in chlorophyll are replaced from electrons of oxygen in water; When e- are removed from water, oxygen is produced as a by-product of photosynthesis, water is split -> 2H+ (protons) + 2e- + 1/2 O2 (gas)
(Note - NADP+ + 2e- + 2H+ <-> NADPH2)
 Dark Reaction |
Carbon-Fixing Reactions are also known as the Dark Reactions (or Light Independent Reactions). Carbon dioxide enters single-celled and aquatic autotrophs through no specialized structures, diffusing into the cells. Land plants must guard against drying out (desiccation) and so have evolved specialized structures known as stomata to allow gas to enter and leave the leaf. The Calvin Cycle occurs in the stroma of chloroplasts. Six molecules of carbon dioxide enter the Calvin
Cycle, eventually producing one molecule of glucose.
Three factors affect photosynthetic rates:
1.
__________
2.
__________
3.
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