Characteristics of Living Things Chap 1-3 Pg 16-19

1. Living things are made up of units called cells A. ORGANISMS can be either: Multicellular- made of many cells. Ex: animals, plants 2. Unicellular- organism made of one cell. Ex: amoeba or bacteria

2. Living things reproduce Two kinds of reproduction: What are they and how are they different? 1. Sexual Reproduction- cells from two different parents unite to form a new organism. Offspring are genetic combination of both parents. 2. Asexual Reproduction- the new organism comes from a single parent. Offspring genetically identical to parent.

3. Living things are based on a universal genetic code The directions for inheritance are carried by a molecule called Deoxyribonucleic Acid (DNA) B. DNA codes the traits on the chromosomes that you inherit. Ex: eyesight, diabetes, height

4. Living things grow and develop Grow – Cells and Unicellular organisms may increase in size. B. Develop - The cells of multicellular organisms begin to divide and differentiate or specialize creating specific types of cells with specific functions. List 6 different types of cells in your body Ex. Muscle cells, liver cells, Red blood cells, skin cells.

Differentiate/Specialize goes with which characteristic? A. Have cells B. Universal genetic code C. Reproduce D. Grow and develop

DNA goes with which characteristic? A. Have cells B. Universal genetic code C. Reproduce D. Grow and develop

Deoxyribonucleic goes with which characteristic? A. Have cells B. Grow and develop C. Universal genetic code D. Reproduce

Asexual and sexual go with with characteristic? A. Have cells B. Universal genetic code C. Reproduce D. Grow and develop

Stand up and Mix Pair Share Take turns listing the first 4 characteristics of life. Tallest person begin

5. Living things obtain and use materials and energy Metabolism- the combination of chemical reactions through which an organism builds up or breaks down materials to carry out its life processes. Examples of types of metabolism: 1. Photosynthesis- BUILD UP (plants) 2. Cellular respiration- BREAK DOWN (plants and animals)

6. Living things respond to their environment a stimulus is a signal to which an organism responds. B. Stimuli can be: 1. internal (stomach growling, dry mouth) 2. external (light, sound, heat) Ex. Internal: Dizzy due to low blood sugareat External:Temperature drops  birds fly south

7. Living things maintain a stable internal environment Homeostasis- the process in which an organism’s internal conditions stay fairly constant in order to survive; means “same condition” Ex: body temperature blood sugar Heart rate…

Respond vs. Internal balance You are dizzy because of low blood sugar: Your RESPONSE is to eat. The REASON is to maintain INTERNAL BALANCE

8. Taken as a group, living things CHANGE OVER TIME Evolution- A population of organisms changes over time through adaptations OVER GENERATIONS in order to survive

Metabolism goes with which characteristic? A. Genetic Code B. Internal balance C. Obtain and use materials and energy D. Change over time

Stimulus goes with which characteristic? A. Respond B. Internal balance C. Obtain and use materials and energy D. Grow and develop

Photosynthesis goes with which characteristic? A. Respond B. Internal balance C. Obtain and use materials and energy D. Change over time

Evolution goes with which characteristic? A. Obtain and use materials and energy B. Grow and develop C. Change over time D. Respond

Homeostasis goes with which characteristic? A. Obtain and use materials and energy B. Internal balance C. Change over time D. Respond

Amoeba Sisters Video

Rally Robin with your shoulder partner: List all 8 characteristics of living things: B’s start

9 Levels of Organization 1.Molecules 2. Cells (ex. ?) 3. Groups of Cells 4. Organism (ex. ?) 5. Population (ex. ?) 6. Community-Populations that live in a defined area. 7. Ecosystem- Community and its NONLIVING surroundings. 8. Biome (ex.?) 9. Biosphere-Part of earth that contains all biomes/ecosystems BIOME