Photosynthesis & Cellular respiration

Photosynthesis and Cellular Respiration Equations

Photosynthesis: - Word Equation: Carbon dioxide + Water → Glucose + OxygenCellular Respiration: - Word Equation: Glucose + Oxygen → Carbon dioxide + Water + ATPThese processes are essential for life; photosynthesis converts light energy into chemical energy stored in glucose, while cellular respiration breaks down glucose to release energy for cellular activities.

Overview

Photosynthesis:

  • Occurs in chloroplasts.

  • Requires light energy.

  • Produces glucose and oxygen from carbon dioxide and water.

  • Converts light energy into chemical energy (ATP).

  • Occurs in plants and some bacteria.

Cellular Respiration:

  • Occurs in mitochondria.

  • Does not require light energy.

  • Uses glucose and oxygen; produces carbon dioxide, water, and ATP.

  • Occurs in plants and animals.

Questions

  • Reactants of Photosynthesis: Carbon dioxide and water.

  • Products of Photosynthesis: Glucose and oxygen.

  • Reactants of Cellular Respiration: Glucose and oxygen.

  • Products of Cellular Respiration: Carbon dioxide, ATP, and water.

  • Nighttime Photosynthesis: Plants cannot photosynthesize without sunlight.

  • Location of Photosynthesis: Takes place in chloroplasts.

  • Green Pigment in Plants: Chlorophyll.

  • Carbons in Glucose: 6 carbons.

  • Respiration in Plants and Animals: True, both undergo respiration.

  • Macromolecules for Respiration Fuel: Carbohydrates and lipids.

Key Concepts

  • Photosynthesis: Process by which plants make food using light.

  • Autotroph: Self-feeding organism (e.g., plants).

  • Heterotroph: Organism that consumes food for energy.

  • Glycolysis: First step of cellular respiration in the cytoplasm.

  • Chlorophyll: Main pigment in chloroplasts for capturing light energy.

  • Granum: Stacks of thylakoids for light-dependent reactions.

  • Roots: Absorb water for photosynthesis.

  • Stomata: Openings for gas exchange in leaves.

  • Glucose: 6-carbon energy source for plants.

  • Krebs Cycle: Second stage of cellular respiration in mitochondria.

  • Carbon Dioxide: Gas released during respiration.