Cellular Respiration

Cards (57)

  • Cellular Respiration is making ATP.
  • All organisms get their energy from food.
  • Metabolism is the chemical reactions in an organism
  • Synthesis - combines small, simple organic molecules to form complex compounds for cell growth and maintenance. (Metabolism)
  • Synthesis uses energy.
  • Decomposition: releases energy by breaking down organic food molecules into simple forms. (Metabolism)
  • Decomposition is getting energy.
  • Decomposition breaks down food from outside the cell into energy, cellular building blocks and heat inside the cell.
  • Synthesis combines energy and cellular building blocks into macromolecules inside the cell.
  • The amount of energy in food depends on the types of bonds in macromolecules.
  • Chemical bonds hold energy
  • Energy stored in food is measured in calories.
  • Calorie = the amount of energy to raise 1 gram of water to 1 degree Celsius.
  • Food labels use calorie = 1 kilocalorie
  • Eat and breathe to gain energy.
  • Cellular Respiration is the process of converting food energy into ATP in the pressure of oxygen, called aerobic respiration.
  • No oxygen means no cellular respiration
  • no mitochondria means no cellular respiration.
  • Without oxygen, fermentation (anaerobic respiration) is used, but it is not as good.
  • Examples of anaerobic respiration are alcohol, lactic acids (in cheese).
  • Cellular Respiration Word Equation: Glucose + Oxygen -> Carbon Dioxide + Water + Energy
  • Stages of Cellular Respiration: Glycolysis, Krebs Cycle, Electron Transport Chain.
  • Glycolysis occurs outside the mitochondria.
  • Krebs Cycle and Electron Transport Chain are both conducted inside the mitochondria.
  • All three stages of cellular respiration have to be completed for cellular respiration to occur.
  • The structure of the mitochondria contains an outer membrane, inner membrane, cristae, and matrix.
  • All parts of the mitochondria
  • The first stage of cellular respiration is glycolysis.
  • In glycolysis, glucose is broken down.
  • Glycolysis occurs in the cytoplasm of the cell.
  • Glycolysis only releases 10% of energy stored in glucose.
  • Glycolysis produces 2 ATP molecules.
  • The second stage of cellular respiration is the Krebs cycle.
  • The Krebs Cycle occurs in the mitochondria matrix.
  • In the Krebs Cycle, most CO2 is formed as a waste product of glucose.
  • The Krebs Cycle produces 2 ATP molecules.
  • The third stage of cellular respiration is Electron Transport Chain.
  • Electron Transport Chain occurs in mitochondria inner membrane.
  • During Electron Transport Chain, O2 is used and H2O is the waste product.
  • 90% of energy is gained in the last step of cellular respiration.