Good Afternoon Do Now: ▫ You walk outside and find a strange looking object. Fearful of its 1,000 tentacles, offensive odor, and oozing pores you poke it with a stick to see whether or not it moves. The object sways back and forth and comes to rest.  How would you know if this object is a living thing?  What does it mean to be alive? 1

2 What we think it means to be alive:

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Essential Questions: What does it mean to be alive? What characteristics do all living things share? 4

1. All Living Things Are Made Up Of One or More Cells 5 Cells are the basic structure and function of all living things New cells arise only from other living cells

2. All Living Things Have A Genetic Code DNA (A – T – C – G) 6

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6. All Living Things Have A Definite Form And Limited Size 10

11 Conversation partners: Do plants move?

Organisms react to stimuli: A stimuli is something that causes a change in an organism An example is a plant’s leaves and stems growing toward light 12 y-7Y Light Temperature Odor Sound Gravity Heat Water Pressure

8. All Living Things Have A Limited Life Span 13

9. All Living Things, As A Group, Evolve, Or Change Over Time 14

Conversation Partners: How have you evolved? 15

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Seven Life Processes 1 Move 2 Reproduce 3 Sensitivity 4 Nutrition 5 Excrete 6 Respire 7 Grow 17

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LIFE PROCESSES Nutrition Digestion Respiration Transport Growth/Repair Reproduction Movement Synthesis & Assimilation Regulation Excretion Immunity 19

NUTRITION THE TAKING IN MATERIALS FROM THE ORGANISMS EXTERNAL ENVIRONMENT AND CHANGING IT INTO A FORM THE ORGANISM CAN USE TWO TYPES ▫ AUTOTROPHIC (auto = self) ▫ HETEROTROPHIC 20

PHOTOSYNTHESIS 21 CARBON DIOXIDE + WATER GLUCOSE + OXYGEN Needs sunlight! Takes place in the chloroplasts with the help of chlorophyll (enzyme)

AUTOTROPHIC NUTRITION GREEN PLANTS SOME PROTISTS SOME BACTERIA 22

INGESTION & DIGESTION THE CONSUMPTION AND BREAKING DOWN OF COMPLEX FOOD MATERIAL INTO SIMPLER FORMS THAT CAN BE USED BY THE ORGANISM 23

TRANSPORT or CIRCULATION Absorbing nutrients from digestive system, moving through body by circulatory system The absorption of materials through cell membranes and the circulation, or distribution of materials within the cell (intracellular) or from cell to cell (intercellular) in multicellular organisms 24

Respiration / Cellular Respiration The processes by which energy stored in food is released Takes place in mitochondria Needed by organisms for all life processes 25 GLUCOSE + OXYGENCARBON DIOXIDE + WATER + ATP (ENERGY)

Sexual Reproduction Two different parent organisms contribute genetic information Two different parent organisms contribute genetic information Involves the combination of male and female sex cells Involves the combination of male and female sex cells 26

Asexual Reproduction One parent cell divides itself into two new “daughter” cells with identical genetic information 27

Questions: 1. Do all living things have all of the characteristics of life? If your answer is no, give an example. 2. Name some non-living thing that uses energy. 3. Name some non-living thing that grows. 28