Question

cellular respiration graphic organizer
name:

	glycolysis	krebs cycle (citric acid cycle)	electron transport chain
location
summary of this stage
# of atp produced

write the balanced chemical equation for cellular respiration.

what organisms perform cellular respiration and why is cellular respiration important to living things?

diagram showing glycolysis (glucose → pyruvic acid), krebs cycle, electron transport chain with atp, co₂, o₂, h₂o

Explanation:

To fill the "Cellular Respiration Graphic Organizer":

Glycolysis:

• Aerobic or Anaerobic: Anaerobic (occurs without oxygen).
• Location: Cytoplasm of the cell.
• Summary of This Stage: Breaks down glucose (a 6 - carbon molecule) into two molecules of pyruvic acid (3 - carbon each). Also produces a small amount of ATP (2 net ATP) and NADH.
• # of ATP Produced: 2 net ATP (4 total are produced, but 2 are used up in the process, so net 2).

Krebs Cycle (Citric Acid Cycle):

• Aerobic or Anaerobic: Aerobic (requires oxygen).
• Location: Matrix of the mitochondria.
• Summary of This Stage: Pyruvic acid from glycolysis is further broken down. Carbon dioxide is released, and high - energy electron carriers (NADH, FADH₂) are produced. Also produces a small amount of ATP (2 per glucose molecule).
• # of ATP Produced: 2 per glucose molecule.

Electron Transport Chain:

• Aerobic or Anaerobic: Aerobic (requires oxygen as the final electron acceptor).
• Location: Inner membrane of the mitochondria (cristae).
• Summary of This Stage: High - energy electrons from NADH and FADH₂ are passed through a series of proteins. Oxygen accepts the electrons and combines with hydrogen to form water. A large amount of ATP (up to 34 per glucose molecule) is produced via chemiosmosis.
• # of ATP Produced: 32 - 34 per glucose molecule (varies slightly depending on conditions).

Balanced Chemical Equation for Cellular Respiration:

The overall equation is $C_{6}H_{12}O_{6}+6O_{2}
ightarrow6CO_{2}+6H_{2}O + ATP$ (energy). In words, glucose and oxygen are converted into carbon dioxide, water, and ATP (energy).

Organisms Performing Cellular Respiration and Importance:

• Organisms: All living organisms (plants, animals, bacteria, fungi, etc.) perform cellular respiration. Even plants, which perform photosynthesis, need to respire to use the glucose they produce.
• Importance: Cellular respiration is important because it converts the chemical energy stored in glucose (or other organic molecules) into ATP, which is the usable form of energy for cells. Cells use ATP to power all their metabolic processes such as active transport, synthesis of macromolecules, muscle contraction, etc. Without cellular respiration, cells would not have a source of energy to carry out their functions, and life processes would cease.

Answer:

Glycolysis:

• Aerobic or Anaerobic: Anaerobic
• Location: Cytoplasm
• Summary of This Stage: Breaks glucose into 2 pyruvic acid, makes 2 net ATP, produces NADH
• # of ATP Produced: 2

Krebs Cycle (Citric Acid Cycle):

• Aerobic or Anaerobic: Aerobic
• Location: Mitochondrial Matrix
• Summary of This Stage: Breaks pyruvic acid, releases $CO_{2}$, makes NADH, FADH₂, 2 ATP
• # of ATP Produced: 2

Electron Transport Chain:

• Aerobic or Anaerobic: Aerobic
• Location: Inner Mitochondrial Membrane (Cristae)
• Summary of This Stage: Uses electrons from NADH/FADH₂, $O_{2}$ makes $H_{2}O$, produces 32 - 34 ATP
• # of ATP Produced: 32 - 34

Balanced Chemical Equation:

$C_{6}H_{12}O_{6}+6O_{2}
ightarrow6CO_{2}+6H_{2}O + ATP$

Organisms and Importance:

• Organisms: All living organisms (plants, animals, bacteria, etc.)
• Importance: Produces ATP (energy) for cellular processes.