1. Science Chapter 1 – Lesson 1 Created by I. Cavalli

2. What are cells? An organism is a living thing. A cell is the smallest unit of living things that can carry out the basic processes of life. Cells come from other cells. A unicellular organism is made of a single cell. A multicellular organism is made up of more than one cell. Created by I. Cavalli

3. What is inside an animal cell? Cells have basic structures called organelles, that help them perform life processes. Created by I. Cavalli

4. Parts of an animal cell Cell Membrane Cytoplasm Nucleus Mitochondria Vacuoles Created by I. Cavalli

5. Cell Membrane The cell membrane is a flexible Wrapping around the animal cell. The cell membrane is filled with a gel-like liquid called cytoplasm. Cytoplasm is made mostly of water. Created by I. Cavalli

6. Nucleus The nucleus is the cell’s control center. Created by I. Cavalli

7. Mitochondria Mitochondria are oval, membrane Covered organelles that supply energy for the Cell. It is a tiny power plant. Created by I. Cavalli

8. Vacuole A vacuole is a membrane covered structure used for storage. It can store water, food and wastes. (vacuum) Created by I. Cavalli

9. Answer the following questions: *How are mitochondria similar to a power plant? *Do you think a cell would function without a nucleus? Explain your answer. Created by I. Cavalli

10. What is inside a plant cell? Mitochondria Vacuole Nucleus Cytoplasm Cell wall Cell membrane Chloroplasts Created by I. Cavalli

11. Plant Cells Plant cells have an additional outer covering around the outside of the cell. It is called the cell wall. Created by I. Cavalli

12. Plants make their own food in structures inside their cells called chloroplasts. Chloroplasts are green because they contain a chemical called chlorophyll. Chloroplasts Created by I. Cavalli

13. Answer the following question: *Which cell has a stronger outer covering- a plant cell or an animal cell? Why do you think so? Created by I. Cavalli

14. How are cells organized? Cells working together at the same job, or function form a tissue. A group of tissues that work together to perform a special function form an organ. Organs Working together form an organ system. Created by I. Cavalli