Biology Essay

Biology Unit 1: Test Notes Cells What is Life? The 8 characteristics of life be; * Metabolism * Life Cycle * burgeon forth * Reproduce * Respond to Stimulus * Homeostasis * formation Unifying Concepts in Biology 1. exclusively levels of life prevail systems of related separate * A System is an organized groups of interacting parts - A stalling is a system of chemicals and processes - A body system includes interacting organs - An ecosystem includes alert and non- living things * Biologists study many opposite systems 2. Structure and mesh argon related in Biology * Structure determines lead - Proteins with different structures perform different functions - heart muscle builder cells take aim a different structure and function than other muscle cells - assorted species have different anatomical structures with different functions 3. clay Follows Function 4.

Organisms must(prenominal) maintain homeostasis to survive in diverse environments * Homeostasis is the aliment of eternal inherent conditions - Homeostasis is usually maintained through damaging feedback - blackball feedback systems return to a condition to its normal (set) layover * Behaviors and adaptations can jock maintain homeostasis The Cell Theory Cells are the basic unit of measurement of life 1. The cell guess grew out of work of many scientists and improvements to the microscope * legion(predicate) scientists contributed to the cell surmisal * more was learned about cells as microscopes amend * The cell theory is unifying 2. Early studies led to the victimisation of t! he cell theory * The Cell theory has three principles; - All organisms are make of cells - All existing cells are produced by other living cells - The cell is the most basic unit of life 3. prokaryotic cells lack a nucleus and most internal structures of eucaryotic cells * All cells share certain characteristics - Cells tend to be microscopic...If you unavoidableness to get a full essay, order it on our website: OrderEssay.net

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