I/GCSE Biology - Aerobic Respiration and Anaerobic Respiration

In I/GCSE Biology, it is important to remember the topic regarding aerobic respiration and anaerobic respiration. Let's get started!!!! 😁

In I/GCSE Biology, make sure you understand what aerobic respiration is!

• Respiration is the process of releasing energy
• Aerobic respiration uses oxygen from the air to release energy from glucose
• Happens in every single cell
• A chemical reaction

Do you remember what diffusion is in I/GCSE Biology?

Diffusion:

• Is the movement of particles from an area of high concentration to low concentration

Why heart and breathing rate change:

• A faster heart rate means more blood pumped around the body which takes oxygen and glucose to cells faster and removes carbon dioxide faster
• Faster breathing rate means that oxygen can be taken into the body faster and carbon dioxide released faster

Cardiac output = stroke volume × heart rate

Stroke volume is the volume of blood pumped in one beat.

In I/GCSE Biology, it is commonly asked too!

Is the release of energy from glucose without using oxygen.

Advantages:

• Useful for when oxygen cannot be delivered fast enough

Disadvantages:

• Releases less energy than aerobic respiration
• Lactic acid is not removed from the body and must be broken down after exercise

EPOC:

• Anyone who exercises hard will find their breathing and heart rate take a while to return to normal when exercise has ended
• This is known as excess post-exercise oxygen consumption

And we're done with this topic! Well Done!

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Drafted by Alyssa (Biology)

References:

1. "chemical reaction of aerobic respiration". Photo from the internet."
2. "Diffusion", https://www.sciencefacts.net/wp-content/uploads/2020/01/Diffusion.jpg
3. "Diffusion in human blood". Photo from the internet.
4. "Cardiac Output", https://ib.bioninja.com.au/_Media/cardiac-output_med.jpeg
5. "Anaerobic Respiration". Photo from the internet.
6. "Pin en Fitness", https://i.pinimg.com/originals/82/d9/3e/82d93eb17f0ec5c23e1fca1f8b4edee2.jpg