Date: September 29, 2015 Aim #11: How do we know the difference between living and nonliving things? HW: 1) Complete packet pages 27 & 28 (top only) 2) Complete practice questions- “Life Functions” 3) Castle Learning assignment due Wednesday 11:59PM 4) UNIT 1 TEST- WEEK THURSDAY/FRIDAY Do Now: Warm-Up Notebook DateTitle of ActivityPage # 9/29Redi’s Experiment21

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

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

Use the acronym MR. R. SARGENT to help remember the life functions!

NUTRITION  All organisms get nutrients through their food! a. Autotrophic: refers to organisms that make their own food b. Heterotrophic: refers to organisms that get nutrients from the environment (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

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!

The Living Environment Name:_____________________ Features of Life  List 4 characteristics that scientist look for when they want to determine life: 1. ____________________________ 2. ____________________________ 3. ____________________________ 4. ____________________________  Label the life characteristic that is represented in each diagram.  A mission to Mars has found a specimen and brought it back to Earth. As a biologist, your job is to figure out if the following specimens is living or non living. Explain how you will determine whether it is living or non living. (use complete sentences) ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ Under a microscope