Aim #13: How can we differentiate between living and nonliving things? Date: September 30, 2016 Aim #13: How can we differentiate between living and nonliving things? HW: Castle Learning due Wednesday Unit 1 Test Thursday (p.1) & Friday (p.5) Do Now: Describe the technique for preparing a wet mount and explain its purpose. How are light microscopes and electron microscopes different?

1) What is the science of biology? Biology is the study of life How do we know the difference between living and nonliving things?

CHARACTERISTICS OF LIFE Cells: Basic units of structure & function Metabolism: Chemical reactions in cells Homeostasis: Internal Balance Reproduction: Produce offspring

All Living Things Are Made Up of One or More Cells

ENERGY and METABOLISM Energy is required to maintain life and for growth and development. Metabolism includes all of the chemical reactions that occur in an organism.

HOMEOSTASIS Break down the word: homeo - Constant or the same stasis – balance By definition, homeostasis is the ability of the body to maintain a relatively constant internal condition, regardless of the external environment.

Reproduction: the ability of an organism to produce a NEW organism.

Eight Life Functions Nutrition Transport Cell Respiration Excretion Synthesis Regulation Growth Reproduction

to help remember the life functions! Use the acronym MR. STRANGER to help remember the life functions!

NUTRITION All organisms get nutrients through their food! a. Autotrophic: refers to organisms that make their own food (auto=self, trophic= feeders) b. Heterotrophic: refers to organisms that get nutrients from the environment (hetero= other, trophic= feeders) ingestdigestegest

Transport Organisms circulate (distribute) and absorb materials through the cells (food and waste)

Cell Respiration The process by which energy stored in food is converted to a usable form (ATP)

Excretion Get rid of Metabolic (cell) waste Ex: carbon dioxide, urine, sweat

SYNTHESIS To make or to build from small to large. Ex: Protein synthesis (building proteins)

REGULATION To control and coordinate life activities

GROWTH Increasing the size or number of cells

REPRODUCTION Production of new individuals Note: Not necessary for the survival of an individual, but necessary for the survival of a species!