Biology 11 Mr. Halley

Classroom Expectations – Room 315 RESPECT  attend  be prepared  be on time  use technology appropriately  be an active learner  ask for help when needed  communicate  work hard  be nice

Life Processes Biology 11

Characteristics of Living Things Highly organized, containing many complex chemical substances Composed of one or more cells Use energy Possess definite form and limited size Have a limited life span Grow Respond to changes in their environment Reproduce Groups of living things evolve

Metabolism The sum of all chemical reactions that occur in the cells of a living thing. Metabolism = anabolism + catabolism

Anabolism Definition: The chemical process of building a more complex substance. Examples:  Photosynthesis  Protein synthesis

Catabolism Definition: The chemical process of breaking down a more complex substance. Examples:  Cell respiration  Chemical digestion

Nutrition Three stages: Ingestion Digestion Egestion

Reproduction AsexualSexual Reproduction involving one parent, offspring is genetically identical to parent. Examples: -Cell division (mitosis) -Budding -Regeneration Reproduction involving two parents, offspring is a genetic mix of both parents. Increases variation Involves gametes (sex cells)

Q: Why does your stomach growl? A: Discovery Health ArticleDiscovery Health Article

Respiration The exchange of gases between cells and the environment. Two types:  Aerobic – requires oxygen  Anaerobic – does not require oxygen

Response The ability of an organism to detect and react to changes (stimuli) in its environment in order to maintain homeostasis. Homeostasis: the maintenance of a steady internal state despite changes in the internal and external environment.

Energy and Life Notes

Adaptations A physical feature or behaviour that makes an organism better suited to its particular environment. Three types:  Reproductive  Defensive  Nutritional