eczBiology biology paper 2 2022 Section B Essay questions скачать в хорошем качестве

eczBiology biology paper 2 2022 Section B Essay questions

Tissue respiration is the metabolic process by which living cells absorb oxygen and release carbon dioxide. It is also called internal respiration. Tissue respiration occurs at the cellular level and involves enzymatic reactions that produce ATP. It is the exchange of gases between the blood in systemic capillaries and tissue cells. There are two types of tissue respiration: aerobic respiration and anaerobic respiration. Aerobic respiration uses glucose and oxygen while anaerobic respiration uses only glucose. Cigarette smoking harms nearly every organ and organ system in the body and diminishes a person’s overall health. Smoking causes cancer of various organs, such as the lung, esophagus, larynx, mouth, throat, bladder, liver, pancreas, stomach, cervix, colon, and rectum, and also leukemia. Smoking also causes or worsens other diseases, such as heart disease, stroke, aortic aneurysm, COPD, diabetes, osteoporosis, rheumatoid arthritis, macular degeneration, cataracts, asthma, pneumonia, tuberculosis and other infections. Smoking also increases inflammation and impairs immune function. Smoking exposure contributes to deaths among nonsmokers especially infants and children who are at increased risk for sudden infant death syndrome1.