Tag: Respiration

Introduction to Respiration

Introduction to Respiration Respiration is one of the many processes needed for survival. It is the process by which energy is released from food by the oxidizing of organic molecules. Respiration may occur in the presence of oxygen, in which case it is called aerobic respiration or it may occur in the absence of oxygen…...

Aerobic and Anaerobic Respiration

Aerobic and Anaerobic Respiration Aerobic C6H12O6 + O2   → 6CO2 + 6H2O + 36ATP(energy) Anaerobic – often called fermentation. This process represents the fermentation process eg yeast fermentation. C6H12O6 →   2C2H5OH + 2CO2 +2ATP(energy) Glucose             ethanol  + carbon dioxide Aerobic respiration also occurs in muscle cells when there is a shortage of oxygen.…...

ATP- adenosine triphosphate

ATP- adenosine triphosphate Respiration results in the formation of ATP (adenosine triphosphate) through a process called the Krebs cycle which takes place on the membranes of the mitochondrion. ATP is the form of energy used in the body and provides cells with all the energy needed to carry out their daily functions such as drive…...

Gaseous Exchange

Gaseous Exchange Gaseous exchange (e.g. breathing) as the name suggests involve the release/ transfer of gases.   Aerobic respiration requires a supply of oxygen and a constant release of carbon dioxide. Gaseous exchange provides these conditions by the trapping of oxygen from the surroundings and the release of carbon dioxide to the surroundings. At no point…...

Mechanism of breathing

Mechanism of breathing Inhaling The contraction of the external intercostal muscles of the rib cage causes it to move upwards. The muscles of the diaphragm then contract so that it flattens from its original domed shape. These muscle contractions result in an increased space in the lungs and a reduction in pressure of the thoracic…...