2.2 The kingdom of bacteria 1HVTTO

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

2.2 The kingdom of bacteria

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 35-36

Lessongoals

• Remember: I can list the key structural characteristics of bacterial cells.
• Understand: I can describe at least two different shapes of bacteria.
• Understand: I can explain at least two ways bacteria are beneficial to humans.
• Understand: I can describe at least two ways bacteria can be harmful to humans.

Homework 2.2

Asgmt 7-10

You see a picture of a cell.
The cell has a cell wall
What is the right conclusion?

1. This is not a plant cell
2. This is not a fungi cell
3. This is not a cell of a bacterium
4. This is not an animal cell

The scientific name of a dog is: Canis lupus familiaris
The scientific name of a grey wolf is: Canis lupus

What does this tell you about these animals?

You see a picture of a cell.
The cell has a vacuole
What is the right conclusion?

1. This is either plant or animal
2. This is either plant or bacterium
3. This is either plant or fungi
4. This is either animal or fungi

You see a picture of a cell.
The cell has a cell membrane
What is the right conclusion?

1. This is either plant or animal
2. This is either bacterium or animal
3. This is either fungi or plant
4. This could be any organism

There are more different kingdoms than phyla

1. Right
2. Wrong

Characteristics of Bacteria

Bacteria are unicellular

They come in different shapes: rods, spheres, spirals

All bacteria cells have:

• NO nucleus (they do have DNA)
• Cell wall

Uni = 1 cellular = cells

The entire organism consists out of one cell

You don't need to learn all parts of this cell.

Only that:

It has no nucleus,

It has a cell wall

Reproduction

Cell division = splitting the cell in two new cells

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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: 2.2

• TB: Pages 35-36
• WB: Asgmt  7-10
• Lt: Asgmt 1-4

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• 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: 2.2

• TB: Pages 35-36
• WB: Asgmt 7-10
• Lt: Asgmt 1-4

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

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish