A Tour of Cells Flashcards
What are unique to Eukaryotic (animal)cells?
Lysosomes, centrioles and flagella
What are unique to Eukaryotic (Plant) cells?
Chloroplasts, cell wall, and plasmodesmata (holes)
Nucleus function?
Contains DNA , surrounded by double-membrane (perforated with pores) - permeable
Nucelous function?
Site of ribosome production
Ribosome function?
Perform protein synthesis, read mRNA and produce encoded protein (TLN)
- -> free in the cytoplasm and attached to the rough ER
- -> inside chloroplasts and mitochondria
Rough Endoplasmic reticulum function?
membrane system is connected with the outer membrane of nucleus
- -> harbours ribosomes, site of protein synthesis and processing after synthesis proteins are chemically modified ( + sugars & Phosphates inside ER)
- -> packed into transport vesicles and transported to golgi system
Smooth ER
no protein synthesis, lipid synthesis (cholesterol & phospholipids) for production of cell membrane, steroid hormones
Golgi apparatus
Synthesis, modification, sorting and secretion of cell products. Pinches off vesicles (mail)
Mitochondria
Site of respiration in animal cells
2 membranes, outer and inner shelf like structures
–> semi-autonomous
Equation for cellular respiration
C6H1206 +6O2 –> 6CO2 +6H20 + ATP
Chloroplasts
Site of photosynthesis in plant cells
contain chlorophyll
Cytoskeleton
EUK, structural support and movement of the cell
Vacuole
Plant cell regulator, plant fills vacuole with water to maintain turgor pressure (inflated) - to push chloroplasts to the top for optimal positioning for photosynthesis.
What does vacuole contain?
enzymes, ions, pigments and toxic by products
Plasma membrane
Selective permeability maintains intracellular environment
