Photorespiration

  Because of its critical function in catalyzing the fixation of \(CO_2\) in all photosynthesizing plants, rubisco is the most common protein on earth. However, it is not a particularly efficient molecule. In addition to its \(CO_2\)-fixing...

READ MORE
Anaerobic Respiration

  What if oxygen is not present? If oxygen is not present, no electron acceptor exists to accept the electrons at the end of the electron transport chain. If this occurs, then NADH accumulates. After all the \(NAD^+\) has been converted to...

READ MORE
The Importance of a Healthy Respiratory System

  Substances harmful to the respiratory system 1. The quality of the air can have significant effects on our respiratory system.   2. As air moves into our lungs, harmful substances in the air may enter too. These harmful substances can...

READ MORE
The Transport of Oxygen in the Human Body

  The diffusion of oxygen from the alveoli into the blood capillaries 1. During inhalation, air is taken into the lungs through the nasal cavity, passing through the trachea, bronchi, bronchioles and finally alveoli.   2. The air that...

READ MORE
The Human Breathing Mechanism

  1. The human respiratory system provides an area for gas exchange between the blood and the environment. It allows oxygen acquisition and carbon dioxide elimination.   2. The gas exchange in lungs is called breathing (exteral...

READ MORE
Oxygen is Needed for Respiration

  1. Oxygen is needed for life.   2. Living things need oxygen for respiration.   3. Respiration is a process by which our body obtains and uses oxygen to oxidise food for the production of energy. Carbon dioxide and water vapour...

READ MORE
Next page