Cell Structures

Cards (15)

  • Cell-surface membrane
    Phospholipid bilayer that controls what exits and enters the cell
  • Nucleus
    Double membrane, pores to allow mRNA to leave, contains genetic material, controls the expression of proteins through the production of mRNA and tRNA
  • Mitochondria
    Double membrane, inner membrane called cristae, internal fluid called matrix. Site of aerobic respiration and produced ATP.
  • DNA in the Nucleus
    Linear, DNA is wrapped around histone proteins to form chromatin
  • Chloroplast
    Found in plant cells, double membrane, contains grana-stacks of thylakoids which contain chlorophyll, grana linked together by lamellae. Stroma-internal fluid. Site of photosynthesis
  • Golgi apparatus
    cisternae surrounded by a membrane
    modifies, stores and transports lipids and proteins,
    forms lysosomes,
    packages lipids and proteins into vesicles and transports them to their final destination
  • Lysosome
    contains hydrolytic enzymes
  • Ribosome
    site of protein synthesis, 2 sub-units, made from ribosomal RNA and proteins, 80s and 70s
  • Rough Endoplasmic Reticulum
    continuous with the surface of the nucleus, has ribosomes attached, modifies and transports proteins that have been produced by ribosomes
  • Smooth Endoplasmic Reticulum
    synthesises, stores and transports lipids and carbohydrates
  • Cell Wall
    Found in plants and prokaryotes, made of cellulose in plants, chitin in fungi and murein in prokaryotes. Provides structure
  • Vacuole
    Sac filled with cell sap, tonoplast-membrane surrounding vacuole to control the entry and exit of chemicals
  • Plasmids
    In prokaryotes, small ring of genetic material
  • Flagellum
    On prokaryotes, allow movement
  • Viruses
    Non-cellular infectious particles, reproduce once inside host cells, has lipid envelope and attachment proteins on outside