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Biology Chapter 6.

QuestionAnswer
Energy is the ability to do work!
Photosynthesis plants convert the energy of sunlight into the energy in the chemical bonds of carbohydrates sugars and starches
Autotrophs organisms that are able to use a source of energy, such as sunlight, to produce food directly from simple inorganic molecules in the environment.
Heterotrophs organisms that obtain energy from the foods they eat.
Plant pigments absorb or reflect light
Green pigment in plants Chlorophyll absorbs red and blue light and reflects green.
NADP accepts a pair of high energy electrons and it is converted to NADPH
ATP energy is stored in the phosphate bonds
1 phosphate group AMP: Adenosine monophosphate
2 phosphate groups ADP: Adenosine diphosphate
Light Reactions sunlight is captured to produce NADPH and ATP; requires light; occurs inside the photosynthetic membranes (contain chlorophyll) of the chloroplast.
Dark Reactions energy from NADP and ATP is used to produce Glucose (this can store more energy- more stable molecule) ; does not require light; occurs outside the photosynthetic membranes of the chloroplast.
Light Absorption The photosynthetic membrane contains clusters of pigment molecules called “photosystems”
Oxygen Production Photosynthetic membrane provides new electrons to chlorophyll to replace the ones used to make NADPH.
ATP Formation the Hydrogen ions from the split water are used to attach another phosphate group to ADP to form ATP
The Calvin Cycle circular series of reactions discovered by Melvin Calvin
The Calvin Cycle(cont.) Uses Carbon dioxide along with NADPH and ATP to form a 5-carbon sugar.
The Calvin Cycle (cont.) 1st reaction: 5-carbon sugar combines with CO₂ to form two 3-carbon compounds. Next 2 reactions: using ATP and NADPH the 3C compounds are converted toPGAL (phosphoglyceraldehyde)…….Glucose etc.
Glycolysis the breaking down of Glucose
ATP molecules are produced from 4 molecules of ADP.
Net Gain 2 molecules of ATP during Glycolysis
Aerobic Process requires oxygen
Respiration uses oxygen to break down food molecules to release energy
Kerbs cycle Pyruvic acid travels from the cytoplasm to the mitochondrion
Kerbs Cycle (cont.) 2 Carbons added (from breakdown of pyruvic acid) 2 Carbons removed (2 molecules of CO₂) 3NAD+ converted to NADH 1 FAD converted to FADH₂ 1 GFP converted to GTP n to be broken down. citric is the 1st compound formed in this series of reactions
Waste product of Krebs Cycle CO2
Oxygen is the final electron acceptor in the process of respiration.
Photosynthesis and Respiration can be thought of as opposite process.
Glycolysis produces 2 ATP molecules per molecule of glucose and does not require oxygen…but NADH must be converted to NAD+
Fermentation is Anaerobic which means it does not require oxygen
Alcoholic Fermentation microorganisms use this process to breakdown pyruvic acid into a 2-Carbon Alcohol and Carbon Dioxide to produce NAD+
Created by: Daniel Joranlien
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