Essential Question: How is a cell like a factory? Activating Strategy: • Discuss and come to a group consensus: What kingdoms would have prokaryotic cells? What kingdoms would have eukaryotic cells? (Hint: there are 6 in total) You may use your notes. Prokaryotic Cells •Found only in onecelled organisms such as bacteria •Have NO organelles Eukaryotic Cells •Found in protists, fungi, plants, & animals •They HAVE organelles Cell Wall Tough, rigid outer coverings that protect the cell and give it shape. Cell Membrane •Protective layer around all cells •Regulates interactions between the cell and the environment Cytoplasm •Gelatin-like substance that flows inside the cell membrane •Important chemical reactions occur here Organelles •Found in eukaryotic cells •Can process energy, manufacture substances, move and store material. Nucleus •Directs all cell activities •Contains hereditary material made of DNA. Nucleolus • Located in the nucleus, this organelle is made up of RNA and protein, and is responsible for making ribosomes Chloroplasts •Found only in plant cells •Green organelles that capture light energy used to make glucose Mitochondria •Organelles where energy is released from breaking down food into carbon dioxide and water Ribosomes •Make proteins needed in the cell for cell membranes and chemical reactions Endoplasmic Reticulum •A series of folded membranes in which materials can be processed and moved around inside the cell. Smooth Endoplasmic Reticulum •Has no attached ribosomes •Processes cellular substances such as lipids that store energy Rough Endoplasmic Reticulum •Has attached ribosomes that make proteins Golgi Bodies •Stacked, flattened membranes that sort proteins and other cellular substances and package them into membrane-bound structures called vesicles Lysosomes •Contain digestive chemicals that help break down food molecules, cell wastes, and worn-out cell parts. Vacuole •This expanding and contracting organelle stores water, nutrients, and waste Assignment: • Draw and label a plant and animal cell. You may look in the FROG book on pages 64 and 65. – Plant: Mitochondria, cell wall, cell membrane, chloroplasts, vacuole, nucleus, ribosomes, cytoplasm – Animal: Mitochondria, cell membrane, vacuoles, nucleus, ribosomes, lysosomes, cytoplasm • Draw and label a bacteria cell (prokaryote). You may look in the FROG book on page 218. – Flagella, cytoplasm, cell membrane, cell wall, ribosomes, genetic material