Photosynthesis Lecture Notes

Institution/Region: Comilla Modern (কুমিল্লা মডা) - referring to Comilla Modern High School or College context.
Contact Information: Phone Number: $02338805035$
Schedule Type: Half-Yearly and Pre-Test (অর্ধ-বার্ষিক ও প্রাক-নির্বাচনী).
Date and Day: $58/03/26$ .
Time: $1.00$ PM (দুপুর ১টা).
Class Level: Class 7 (৭ম শ্রেণি).
Subject List:
- Bangla 1st Paper (বাংলা-১ম পত্র)
- Mathematics (গণিত)
- Bangla 2nd Paper (বাংলা-২য় পত্র)
- English 1st Paper (ইংরেজি ১ম পত্র)

General Process: Photosynthesis is the process by which green plants produce food.
Chemical Components and By-products:
- The reaction involves $H_2O$ and results in the production of $6O_2$ .
- By-product: Oxygen ( $O_2$ ) is identified as the "By-Product" (উপজাত).

Phase 1: Light-Dependent Phase (আলোক নির্ভর পর্যায়):
- Requires light energy.
- Inputs/Process: Utilizes solar energy.
- Primary Products (Assimilatory Power):
  1. $ATP$
  2. $NADPH + H^+$ (or $NADPH_2$ )
Phase 2: Light-Independent Phase (আলোক নিরপেক্ষ পর্যায়):
- Does not directly require light.
- Primary Product: Carbohydrate/Glucose ( $C_6H_{12}O_6$ ).

Photophosphorylation (ফটো-ফসফোরাইলেশন):
- Definition: The process of producing $ATP$ (Adenosine Triphosphate) from $ADP$ (Adenosine Diphosphate) by utilizing solar energy during the light-dependent stage of photosynthesis.
- Reaction Equation: $ADP + P_i \xrightarrow{\text{Light}} ATP$
Photolysis (ফটোলাইসিস):
- Definition: The process where water molecules are split into oxygen, hydrogen ions, and electrons under the influence of sunlight.
- Process Detail: Under the influence of sunlight, $H_2O$ breaks down to produce:
  1. Oxygen ( $\frac{1}{2}O_2$ )
  2. Hydrogen Ions ( $2H^+$ )
  3. Electrons ( $2e^-$ )
- Reaction Equation: $H_2O \xrightarrow{\text{Light}} 2H^+ + \frac{1}{2}O_2 + 2e^-$

Numbers/Tags observed in transcript: $165$ , $02$ , $H_2$ , $27$ , $-194A W$ , $8.00$ , $28627$ .