Akoranga 7 Mahi Tuatahi ^🔗

1. Get our your laptop or phone
2. Get open www.kahoot.it

https://create.kahoot.it/details/food-web-food-chain/0b1082af-894b-4b54-9893-bd56ff55d9c4

Te Whāinga Ako ^🔗

1. Describe the structure of bacteria and Fungi, labelling the important structures

Write the date and te whāinga ako in your book

Micro-Organisms ^🔗

• Micro-organisms/microbes are too small to see with the naked eye
• They are either unicellular (made of one cell), or a small group of cells
• Two main categories: bacteria and fungi

Bacteria ^🔗

• Single celled organism (unicellular)
• Typically a few micrometers in size ($0.000001m$)
• Come in many different shapes (e.g. spirals, rods, spheres)

Structure of Bacteria ^🔗

• Stick in your unlabelled bacteria diagram
• Label these structures!
  • Vacuole
  • Nucleus
  • Cell membrane
  • Cytoplasm
  • Mitochondria
  • Lipid globules

Fungi (Decomposers) ^🔗

• Made of clusters of cells
• Fungi are sometimes too small to see, but once the group of cells gets too large it becomes visible to the naked eye
• Get their food by absorbing dissolved organic molecules

Function of Fungi ^🔗

• Fungi exist in ecosystems to break down dead organic matter into small molecules that are able to be be used by other living things
• This is so that energy and nutrients can be reused!

Structure of Fungi ^🔗

• Mycelium
• Spore
• Reproductive Structure
• Hyphae

Tūhura: Fungi ^🔗

1. In desk pairs, collect a bag, slice of bread and permanent marker
2. Write your names on the bag
3. Write the date (12/02/2021)
4. Choose a place/thing to wipe the bread on - put this label on your bread
   • Everyone should do somewhere different
5. Expose the bread to your surface, seal the bag and pin it to the board!

Tākaro/Game ^🔗

Open https://joinmyquiz.com and get ready to play!

Akoranga 8 Mahi Tuatahi ^🔗

1. Collect a whiteboard from the front of the room
2. In pairs, try your best to draw and label a diagram of a fungi from memory
3. Extra: Explain the function/role of fungi in ecosystems

Ngā Whāinga Ako ^🔗

1. Describe how fungi feed by extra-cellular digestion
2. Describe the role and importance of decomposers in an ecosystem

Write the date and ngā whāinga ako in your book

Why are Decomposers Important? ^🔗

They allow energy and nutrients to be recycled through an ecosystem.

Extracellular Digestion ^🔗

• Cell membrane: a semi-permeable membrane
• What does semi-permeable mean?
• Only some things (semi) can go through it (permeable)!
• Extra (outside), cellular (cell), digestion (break down)

^🔗

• Most food is made of large carbohydrate molecules
• It is hard to absorb such large molecules through the membrane, so extracellular digestion is needed to break the carbohydrates into smaller sugars

^🔗

• Humans, bacteria, fungi and other organisms all use/creat enzymes to break down molecules in extracellular digestion.
• Enzymes are molecular machines that can perform specific functions in biology e.g break some molecules down (or join them together)!

Bread Tūhura/Investigation ^🔗

• In humans we do extracellular digestion in our mouths, with the enzymes in our saliva!
• Take a piece of bread here, mush it up in your mouth but don’t swallow it! Over time your should notice the flavour start to change. What do you observe?

Ngohe/Activity ^🔗

Open the TedED link on Google Classroom, watch the video and then answer the questions associated with it.