7.2 Texter---Grace

7.2 Notes

Definitions

• Cytoplasm- Portion of the cell outside the Nucleus
• Organelles-Specialized structure that performs important cellular functions within an eukaryotic Cell
• Vacuoles- Structures in a cell that stores diffrent materials
• Lysosomes- Small organelles filled with enzymes
• Cytoskeleton- A network of protein filaments
• Microfilaments-threadlike structures made up of a protein called actin
• Microtubules- hollow structures made up of protein called tubulins
• Centrioles- Organelles that help organize cell division
• Ribosomes- small particles of RNA and protein found throughout the cytoplasm in all cells
• Endolplasmic Reticulum- An internal membrane system
• Golgi Apparatus- Organelles that modifies, sorts, and packages protein and other materials for storage in a cell or release outside the cell
• Chloroplast- Organelles that capture energy from the sunlight and converts it into food
• Mitochondria- Organelles that convert solar energy stored in food into copounds that are more convenient for the cell to use
• Cell Wall- a strong supporting layer around the membrane of a cell
• Lipid Bilayer-flexible double layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings
• Selectively Permeable- Substances that can pass across cell membrane and other can't

Important Information

• The nucleus contains most of the cells DNA and controls the functions of the cell
• Chromosomes contain the cells genetic information
• Nuclei are contained in the nucleolus
• Proteins are assembled on ribosomes
• Proteins created on the Endoplasmic Rectum includes ones that will be released, membrane proteins, and proteins for lysosomes and other specific locations in a cell
• Most cell walls have enough pores to allow water, oxygen, carbon Dioxide, and other substances pass through
• The cell membrane chooses what goes in and out of the cell as well as it also protects and supports the cell
• Most of the cell membrane is protein molecules