Make your whiteboard come alive with science!

Transcription

1 LER 6038 Grades 4+ Ages 9+ Make your whiteboard come alive with science! Explore a plant cell through handson investigation!

2 A. Cell Wall A rigid and strong wall that protects and maintains the shape of the cell. B. Cytoplasm All organelles of a cell reside in the cytoplasm. C. Nucleus The nucleus is the controlling center of a cell. It also contains the DNA for the cell. D. Nucleolus Located inside the nucleus, the nucleolus produces RNA in the form of ribosomes. E. Chromatin Part of the nucleus that contains most of the DNA of the nucleus. F. Chloroplast An organelle that contains chlorophyll, which makes up the green substance in plants, and is where photosynthesis takes place. G. Golgi Apparatus Prepares proteins and fats that are created in the endoplasmic reticulum for transport to the outside of the cell. H. Mitochondria The main energy source for a cell. The mitochondria converts oxygen and nutrients into energy for the cell to use. I. Ribosome Some ribosomes are attached to the rough ER and are composed of RNA. J. Smooth Endoplasmic Reticulum (Smooth ER) The smooth ER transports materials throughout the cell, produces membrane proteins and digests lipids. K. Rough Endoplasmic Reticulum (Rough ER) Covered with ribosomes, the rough ER produces protein and transports materials throughout the cell. L. Cell Membrane The cell membrane holds all the parts of a cell. Every cell is enclosed by a cell membrane, which controls the passage of materials in and out of the cell. M.Vacuole Most plant cells only have one large vacuole. It is filled with fluid and helps to maintain the shape of the cell. 3

3 Plant Cell Structure Worksheet Directions: Correctly label all parts of the plant cell. Name: 4

4 Interesting Cell Facts All life is dependent, directly or indirectly, on plants because of the energy produced by photosynthesis in the cells. When a plant is watered, the water collects in the vacuole of the plant cells. This helps the cells to stay rigid, which keeps the plant from wilting. The vacuole then helps maintain the shape of the plant. The cell wall also helps give the plant its shape and keep it rigid. The color of flowers comes from pigments that are also contained in the vacuole. The green color in plants comes from chlorophyll. 5

5 Photosynthesis The process of photosynthesis is essential to sustaining life in plants and to all other life on Earth. Without this process, plants would not have food and we would not have oxygen. Photosynthesis begins with the sun. Sunlight, water, and carbon dioxide are absorbed by the chlorophyll found in plant cells. The sunlight, water, and carbon dioxide then transform into sugar for the plant s food and oxygen that will be released into the air. 6

6 Suggested Activities Use for classroom demonstration as well as individual student exploration. As an introduction to cell structure, place the Giant Magnetic Plant Cell on your whiteboard and label organelles as you discuss them. Place the cell structure on the board with the organelles off to the side. Invite students to name the organelles. If students are correct, put the organelles on the cell in the approximate place where they belong. Pass out the organelles to the students. Call out characteristics such as, Filled with fluid, or Helps the plant keep its shape. Then, have students who are holding organelles with those characteristics stand up and identify the organelles. Have students label organelles either within the cell or individually on the whiteboard. Assign each student in a group an organelle. Then, have the students work together to create a performance showing how the organelles work together. Allow them to perform for the class as a demonstration. 7

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