Characteristics of Living Things Alive or not alive?

All living things are made of the same elements: C_______ H_______ N_______ O_______ ARBON YDROGEN ITROGEN XYGEN

Living things can: Move Grow Made of cells Reproduce Respond to stimulus Perform certain chemical activities

Life comes from Life People used to believe in SPONTANEOUS GENERATION. This idea stated that life could spring from _________ matter. Francesco Redi disproved this idea in 1668. He proved that ________ do not come from _________________, they come from their ____________. All life is made of ______ that came from other ___________. nonliving FLIES ROTTING MEAT PARENTS CELLS CELLS

Movement Living things move to get __________. FOOD AND REPRODUCE

Metabolism Metabolism is the _____ ____ and _______ ______ of chemicals in an organism. Ingestion Digestion Respiration Excretion Building up Breaking down

Growth Not only do living things grow by getting _______ they also develop by getting more _________. larger complex

Living organisms Respond to Stimuli A ______________ is any change in the environment. A _______________is the action or movement of an organism. stimulus response

All life can REPRODUCE __________ reproduction involves only one parent. __________ reproduction involves 2 parents. Asexual Sexual

Needs of Living Things What do you need to survive?

Energy All life requires ENERGY. The main source of energy for most living things is the sun. FOOD is a need of all organisms.

Water Life could not exist without WATER. More than 65% of your body is made of water. Most of the chemical reactions in living things take place in water.

Space Organisms compete for LIVING SPACE