Paper Topic:

Photosynthesis and cellular respiration.

Running head : METABOLISM

Photosynthesis and Cellular Respiration

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Photosynthesis and Cellular Respiration

Part I

6CO2 6H2O 36 ATP Heat (Decelles , 2002

Reactants Carbon Dioxide , NADPH , ATP Glucose , Oxygen

Products Glucose , NADP , ADP , Pi Carbon Dioxide , Water , ATP

Is this reaction endergonic or exergonic ? State which one it is Endergonic Exergonic

Energy source used Light Glucose

Cell organelles involved in the reaction Chloroplasts (Cooper , 1975 Cytoplasm and Mitochondria (Decelles , 2002

Role of ATP in the reaction Energy Stored Energy Produced

Part II

Organisms that use photosynthesis to produce glucose are collectively called photoautotrophs three specific examples of such organisms are Rhodospirillum rubrum , Chromatium okenii , and Chlorobium limicola (Sengbusch , 2003

Obligate aerobes are organisms that exclusively utilize aerobic cellular respiration examples of such organisms are Bacillus , Pseudomonas , and Nocardia (Schlegel , 2003

Unlike in aerobic cellular fermentation , organisms that utilize fermentation in cases wherein oxygen is absent use pyruvate along with other compounds derived from acetyl-CoA as a replacement for oxygen as the electron acceptor examples of organisms which utilize fermentation are Streptococcus , Leuconostoc , and Pediococcus (Schlegel , 2003

Specificity and regulation are two of the most significant characteristics of enzymes in relation to catalyzing reactions specificity pertains to the capability of enzymes to properly bind specific substrates , hence making the overall process efficient Regulation , on the other hand , explains as to why inappropriate amounts of products produced are rare during normal conditions as the general trend is to reach equilibrium (Schlegel , 2003

References

Cooper , J .P (1975 . Photosynthesis and...

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