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Cells
Lesson 2
| Term | Definition |
|---|---|
| Cell wall | Rigid layer of nonliving material that surrounds the cells of plants and some other organisms |
| Cell membrane | A cell structure that controls which substances can enter or leave the cell |
| Nucleus | In cells, a large organelle that contains the cells genetic material in the form of DNA and controls many of the cells activities. |
| Organelle | A tiny cell structure that carries out a specific function within the cell |
| Ribosome | A small grain-shaped organelle in the cytoplasm of a cell that produces proteins |
| Cytoplasm | The thick fluid region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane and nucleus (in eukaryotes) |
| Mitochondria | Rod-shaped cell structures that covert energy in food molecules to energy the cell can use to carry out its functions. |
| Endoplasmic reticulum | A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another |
| Golgi apparatus | like a cell's post office, which modifies, sorts, and packages proteins and lipids into small containers called vesicles for delivery to specific destinations inside or outside the cell. |
| Vacuole | A sac-like organelle that stores water, food, and other materials. |
| Lysosome | A small, round cell structure containing chemicals that breakdown large food particles into smaller ones |
| Multicellular | consisting of many cells. |
| Unicellular | Made of a single cell. |
| Tissue | A group of similar cells that perform a specific function |
| Organ | A body structure that is composed of different kinds of tissues that work together. |
| Organ system | a group of organs that work together in the body to perform a complex function |
| Specialized cells | a cell that has developed a unique structure to perform a specific function in the body |
| List what is inside the nucleus | The cells genetic material (DNA organized as chromatin and chromosomes) |
| Describe the difference between animal and plant cell structures | Plants have bigger vacuole, chloroplasts, cell wall. |
| Describe what the endoplasmic reticulum does for ribosomes | The endoplasmic reticulum guides the proteins lake a maze of passageways. |
| where ribosomes are made and why they are important | Ribosomes are made in the nucleolus, and they produce proteins for the cell. |
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