U3 B5+6 HV

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

B5 Fungi

• Put your things on your desk

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 201-203

Lessongoals

• You can list features of fungi.
• You can explain that fungi can be both useful and harmful and you can give examples of both
• You can list the features of bacteria
  
• You can explain that bacteria can be both useful and harmful and you can give examples of both

What are we going to do?

• Homework
• Recap
• Fungi and bacteria
• Time for homework
• End

Homework

Read:  U3 - Bs 5 - Fungi

Make:  U3 - Bs 5 - Fungi assignment 4

You see a microscopic picture of a cell. What part can you best look for if you want to check if the organism is a bacterium?

1. Cell wall
2. Plastid
3. Nucleus
4. Vacuole

You see 2 flies with slightly different colors. You want to test if they belong to the same species. How could you test this?

What part of a cell is found in the least number of domains and kingdoms

1. Cell wall
2. Plastid
3. Nucleus
4. Vacuole

List the domain, kingdom and phylum a frog belongs to.

In which of these groups will you find the most different organisms?

1. Kingdom
2. Phylum
3. Order
4. Species

All vertebrates have an ... skeleton and are ... symmetrical

1. External and bilateral
2. Internal and bilateral
3. External and radial
4. Internal and radial

Fungi cells

• Nucleus
• Cell wall

Unicellular fungi

• Reproduction by budding
• cells divide by forming buds
• Example: yeast

Multicellular fungi

• Reproduction by spores

         - Toadstools

         - at the end of hyphae

• Examples

Useful & harmful

• Feed on dead bodies of other organisms
• Make penicillin
• Biotechnology : bread, beer, cheese, etc.
• Cause fungal infections
• Spoil food

Bacteria are everywhere

Cell characteristics of prokaryotes

All prokaryotes
(bacteria and
archaea)

have:

• NO nucleus
• Cell wall

Cell membrane

Cell wall

Features of bacteria

• Always unicellular
• Very small (too small for most microscopes)
• Reproduction: Cell division

Reproduction

Speed depends on:

• Temperature
• Food
• Species

s

s

Useful bacteria

Most bacteria are useful:

• Help digest food in our intestines
• Kill harmful bacteria on our skin
• Feed on dead organisms
• Can be used in making food: Yoghurt, Sauerkraut

Harmful bacteria

• Cause diseases
• Spoil food

Antibiotics (like penicillin) kill bacteria

What you should do:

• Read Bs 5 (fungi)
• Do asgmt  8 and 9 
• Read Bs 6 (bacteria)
• Do asgmt 4 

Done with the above?

• Work on the next chapter(s)
• Learn for the test (in two weeks)
• Make other homework
• Read a book

Zs = Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do:

• Read Bs 5 (fungi)
• Do asgmt 8 and 9
• Read Bs 6 (bacteria)
• Do asgmt 4 

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Zw = Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish