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
For cell movement
Cilla and flagella
Centrosomes
9 pairs of microtubules surrounded by 2 central microtubules
Peptidoglycan protects cell and provides structure
Cell wall
CHO’s for cell wall
Cellulose - plants and protists
Chitin- fungi
Gram + vs. Gram -
Gram + No LPS (purple)
Gram - LPS (pink)
Synthesis of DNA to complementary RNA
Transcription
Protein from mRNA to amino acid sequence
Translation
Theory that organelles evolved through symbiotic relationships
Endosymbiosis
What 4 similarities do mitochondria and chloroplasts have?
- 2 membranes
- Bacterial type DNA and ribosomes
- Size of prokaryote
- Divide similar to bacteria
Glycoprotein and collagen that surround animal cells and can be connected to cytoplasm via integrin protein in membrane
Extracellular matrix (ECM)
Vesicles vs. vacuole
Vesicle’s membranes can bind to other membranes. Vacuoles cannot
Synthesis of carbs, lipids, and steroids
Smooth ER
Calcium storage
Smooth ER
Tubes the resist compression and help transport vesicles
Microtubules