Eukaryotic cell structure

• What are the functions of the nucleus?

  • acts as the control centre of the cell
  • manufactures mRNA and tRNA
  • contains genetic material in the form of DNA and chromosomes
  • manufactures ribosomal RNA
• What is the function of the RER?

  Provides LSA for protein synthesis and pathway for transport
• What is the function of the RER?

  Synthesis, store and transport lipids and carbohydrates
• What is the function of the nucleolus?

  manufactures RNA
• What is the function of the nuclear pore?

  allows passage of mRNA out of nucleus
• What is the function of the nuclear envelope?

  controls entry and exit of materials and contains reactions
• What is the function of the cristae in the mitochondria?

  provides LSA for the attachment of proteins and enzymes that are involved in respiration
• What is the function of the matrix in the mitochondria?

  contains lipids, proteins, ribosomes and mtDNA; controls synthesis of their own protein
• What is the function of the nucleus?

  • site of DNA replication and transcription (making mRNA)
  • contains genetic code for each cell
• What is the role of the SER and RER?

  • RER - protein synthesis
  • SER - synthesis, stores lipids and carbohydrates
• What are the functions of the Golgi apparatus and vesicles?

  • produce secretory enzymes
  • transport, modify and store lipids
  • forms lysosomes
• What is the function of the lysosomes?

  • hydrolyse phagocytic cells
  • break down dead cells through autolysis
  • releases enzymes outside the cell to destroy material (exocytosis)
  • digests worn out organelles