Science Notes Five

Functions of Cell Structures:

1. Store or release energy
2. Building new and repairing old cell parts
3. Getting rid of waste
4. Respond to environment
5. Reproduce

Cell Parts (in more detail):

• Cell Wall (made of cellulose)
• Protection and Support
• Only in Plants
• Cell Membrane (regulates flow of materials)
• Nucleus
• Control Center
• DNA (stores info)
• RNA (reads DNA messages)
• Nuclear Membrane
• Seperates Nucleus from rest of cell
• Allows material exchange
• Chromosomes
• Found in Nucleus
• Made of DNA&RNA
• Pass on cell traits to new cell
• Nucleolus
• Found in Nucleus
• Makes RNA
• Endoplasmic Reticulum (E.R.)
• Makes and transports proteins
• Ribosomes
• Makes proteins
• Two types: free or attached (to E.R.)
• Mitochondria
• Produces energy
• Bean-shaped
• Vacuoles
• Storage tanks
• Store water, food, waste, etc. There are specific types of vacuoles for each type of material stored
• Lysosomes
• Stores digestive enzymes
• Chloroplasts
• Capture light to make food for plant
• Use chlorophyll
• Golgi bodies
• Package and ship proteins
• Centroli
• Found almost only in animal cells
• Timekeeper for cell division

I might type more soon but my internet is acting up, so don't count on it.