BIOL 1002 Study Guide - Final Guide: Cellular Respiration, Organelle, Catharanthus Roseus
Document Summary
Cellular respiration: mitochondrion- multi membrane organelle, has ability to pump protons across membrane. Proton is a hydrogen ion, cannot go through membrane- they need help. Respiratory system: requires large, moist surface area, blood and external environment interact, exchange of oxygen and co2, gases dissolve in moisture easier, then exchange. Inhalation (muscles contract: diaphragm (muscle) and pleural membrane surround lungs, diaphragm goes down and muscles around the ribs life them out and up, creates a vacuum that causes lungs to expand and draw air. Exhalation: air is passively exhaled (muscles relax: diaphragm and muscles relax, lungs shrink, releasing air. Diseases associated with respiration include lung cancer and emphysema. By the time they start to experience symptoms it is too late to fix the problem. When you smoke, you start to suffocate. After just 20 minutes after your last cigarette your body begins a series of changes to repair the damage caused by smoking.
