Lysosomes

Question 1

lysosomes - structure

Answer 1

• small temporary vacuoles
• surrounded by a single membrane
• formed by being pinched off from the golgi
  body

Question 2

lysosomes - function - phagocytosis

Answer 2

• foreign substance packaged in a vesicle
• lysosomes fuse with the membrane of the
  vesicle
  - contains digestive enzymes
• releases the enzymes into the vesicle
• content of the vesicle is digested
  - useful material absorbed into the
  cytoplasm
  - excess is released out through exocytosis

Question 3

lysosomes - function - autophagy

Answer 3

• an organelle that’s reached the end of it’s life is
  packaged into a vesicle
• a lysosome fuses with the membrane of the
  vesicle
• digestion enzymes released into the vesicle
• organelle is digested by the enzymes
• and leaves the cell through exocytosis

Question 4

lysosomes - function - exocytosis

Answer 4

• the membrane of a vesicle fuses with the
  membrane of the cell
• content of the vesicle is released outside of the
  cell