Cold sores - painful sores on the lips and around the mouth, caused by a virus. Canker sores - painful sores in the mouth, caused by bacteria or viruses. Thrush - a yeast infection that causes white patches in your mouth. Leukoplakia - white patches of excess cell growth on the cheeks, gums or tongue, common in smokers.
Energy and Metabolism. All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments. Metabolism is the set of life-sustaining chemical processes that enables organisms transform the chemical energy stored in molecules into energy that can be used for cellular processes.
Mitosis is important for a number of factors: 1Development and growth:as an organism grows the cells are added to the body by mitosis 2 Cell replacement:when old â¦ cells die the exact copies of cells replace them due to mitosis 3Regeneration:some organisms like sea star have the ability to regenerate their body parts they do so by mitosis 4 Asexual reproduction:some organisms like hydra produce genetically similar offsprings through assexual reproduction.During this process mitosis forms a ...