Cell Structures Flashcards
Cells were discovered by who? When?
Hooke 1960s
Cell theory
- All organisms are made of cells
- Cells are the smallest living thing
- All cells arise from pre-existing cells
All cells have what 4 similarities?
- Genetic material in nucleus or nucleiod
- Cytoplasm
- Plasma membrane with phospholipid bilayer
- Ribosomes
Cromatin
Protein + DNA
Protein synthesis
Ribosomes
Channel system through cytoplasm
Rough ER
Synthesis of protein that will be sent to lysosomes or membrane
Rough ER
Synthesis of membrane lipids
Smooth ER
Detoxify foreign substances
Smooth ER
Synthesize cell wall components
Golgi
Pack and distribute material around cell
Golgi
Digestive enzymes break down macromolecules to recycle foreign matter cell phagocytosized
Lysosomes
Vestibules of enzymes
Microbodies
What are the two types of microbodies.
- Gloxysomes: converts fats to carbs in plants.
- Peroxisomes: oxidative enzymes metabolize waste (fatty acid and amino acid)
Detoxify
3 types of vacuoles
- Central vacuole (Plants)
- Contractile vacuole (Protists)
- Storage vacuole
Oxidative metabolism enzymes convert macromolecules to ATP
Mitochondria
What is the layered inner membrane of the mitochondria.
Cristae
What is the matrix?
Within the inner membrane (cristae) of the mitochondria
Contain chlorophyll for photosynthesis
Chloroplasts
What are thylakoids and grana?
Thylakoids: membrane sacs located inside chloroplasts
Grana: stacks of thylakoids
Protein fibers within eukaryotic cells
Cytoskeleton
3 Functions of the cytoskeleton
- Shape and structure
- Fixes organelles in place
- Aids in transportation
Main function is cellular contractions. Crawling and pinching
Actin filaments + myosin
Filaments for structure
Intermediate filaments