Characteristics of Life

Remember this… MR Harry Henderson Cuts Onions Sadly

Why do organisms need energy? How do organisms obtain energy? M - Metabolism Metabolism - biochemical reactions that release & use energy. Why do organisms need energy? How do organisms obtain energy?

Is it essential for an individual to reproduce? R - Reproduction Asexual Reproduction - involves a single parent; offspring are genetically identical to the parent. Sexual Reproduction - involves 2 parents; offspring are genetically different. Is it essential for an individual to reproduce?

Heredity - passing of genetic material to offspring H - Heredity Heredity - passing of genetic material to offspring Two types: DNA and RNA

H - Homeostasis Human body temperature……… Homeostasis - the ability of an organism to maintain its internal environment despite conditions in the external environment. Human body temperature……… if body temperature rises, you perspire. if body temperature lowers, you shiver.

C O – Cellular Organization In multicellular organisms, cells are specialized to perform specific functions The size of multicelled organisms depends on the number of cells NOT the size of the cells

S – Sensitivity All living things respond to stimuli in the external environment Detect and respond to changes in light, heat, sound and chemical and mechanical contact Coordinates it’s responses

Fire?? Fire Animation What are the characteristics of living things? As you watch the animation, think about these questions: What are the characteristics of living things? 2. Are fire flames alive? Fire Animation

Homework Based on the animation, Is fire living? Be sure to include the following in your answer: What are the characteristics of living things? Flames can grow, move, and reproduce. Are flames alive?