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Transcript
Gr. 5 Unit A-1 Comparing Living Things Is It Living or Nonliving? ALL living things carry out the six basic life processes. What are the six life processes? • • • • • • Respond to changes Remove wastes Get energy Use energy Grow Reproduce Where do plants get energy? Sunlight Where do plants get nutrients? Soil and water How do animals get energy and nutrients? They consume other living things. Hello dear Deer! Would you like to join me for lunch? How is waste produced? • The breakdown of food and the use of energy cause waste. • can be poisonous Plants produce Oxygen as waste during photosynthesis. Humans produce Carbon Dioxide as waste during respiration. How might an animal respond if cornered or threatened? Gee, he looks upset. I think I’ll go now! What is a cell? • The basic unit of a living organism • All living things are made of cells. EGG: Compare to a cell. 1.____________ 1 2 2.____________ 3.____________ 3 Name two living things that are one single cell. A bacterium An amoeba What are bacteria? tiny one-celled organisms They may be helpful or cause diseases. Some bacteria change milk into _____________ cheese and ___________________. yogurt What is a virus? a tiny particle that can reproduce only inside the cells of living things. Most scientists don’t think viruses are living things because: • • • • processes They can’t carry out all of the __________________. reproduce They can only _________________ inside living cells. grow They don’t _______ the way living things do. energy They can’t release and use _______________. Both plant and animal cells have: 1. 2. 3. 4. 5. 6. Nucleus Cell membrane Cytoplasm Vacuoles Mitochondria Chromosomes What part of the cell controls the activities of the cell? Nucleus Click on the picture to learn more! What is the thin layer that makes up the outside of the cell and controls what enters and leaves the cell? Cell membrane What is the jellylike substance around the nucleus that fills most of the cell? Cytoplasm Click on the picture to learn more about cytoplasm. What do mitochondria do? MIGHTY Mitochondria release energy from food. What is a vacuole? Cell structures that store: • FOOD • WATER • WASTE What are the threadlike structures that contain information about plant and animal characteristics? Chromosomes What two things do plant cells have that animal cells don’t have? Cell wall Chloroplasts Click here. Plant cells have a stiff outer layer that helps keep the plant cells firm called a Cell wall What are chloroplasts? the green cell part that traps and uses light energy Why don’t animal cells need chloroplasts? Animals don’t need light energy to make food. They are consumers. Would a plant’s root cells contain chloroplasts? No. Roots are underground and bring water and minerals into a plant. There is no sunlight underground. Stop and Think: • Do you think chloroplasts could be found on plants that don’t grow in soil? • How might you develop an experiment to find out? Why don’t all cells look alike? • Different cells have different jobs. What is the function of the red blood cell? • Carry oxygen • Remove waste How is a mature red blood cell different from most other cells? No nucleus Cells work together to form: Tissues work together to form: Organs Organs work together to form: Body Systems