Week 38: 2.4 Cells

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

2.4 Cells

• Take off your jacket
• Put your things on your desk

       Book, laptop, pencil case

• Bag on the floor, phone in bag
• Read 2.4

Lessongoals

• You can name parts of animal cells with their features and functions.
• You can name parts of plant cells with their features and functions

LESSON GOAL

You can name parts of animal cells with their features and functions.

You can name parts of plant cells with their features and functions.

quizlet.com

Plants have stomata. Florien compares the amount of stomata on a cactus, with the amount on a tropical plant with big leaves.
What will she probably find?

1. The cactus has the least stomata
2. The tropical plant has the least stomata
3. Both plants have an equal amount of stomata

Jay wants to move a plant in the garden. First he takes it out of the ground. When he looks at the roots he notices that some of them are thicker than others.
Explain, why are these roots thicker?

Cells

Organisms are made from many cells.

Cells contain organelles

Organelles perform important tasks

Plant versus animal cells

cell membrane

cell wall

nucleus

cytoplasm

chloroplast

vacuole

Cell membrane

Separates the inside from the outside of the cell

Controls what goes in and out of the cell

Consists mainly of fats and proteins.

Cytoplasma

a thick fluid consisting of water with dissolved substances

Nucleus

Control centre of the cell, 

Contains DNA

Cell wall

= extracellular material!

• a tough layer around a plant cell:
  
• gives support to cell/make everything firm.
  
• is not part of the cell, it goes around the cell

Vacuole

a vesicle in a plant cell that is filled with fluid

a kind of sac filled with liquid  

• storing 
• rigidity.

Vacuole

Vacuole gives the plant firmness

Plastids

Only plant cells contain plastids:

• Chloroplast

           Performs photosynthesis, makes plant green

• Chromoplast

           Gives colour to fruit and flowers

• Amyloplast

           Storage, contains starch, found in potatoes

Plastids can change into other types of plastids

Plastids

Animal cell

Plant cell

Plant cells vs animal cells

VWO

Explain what happens when the tomato changes from green to red.

What you should do:

• Read 2.4
• Do asgmt  1,-10

Done with the above?

• Work on the next week
• see reader
• Study for the test 
• Make the test yourself or practice the flashcards

Zs = Working in Silence

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

What you should do:

• Read 2.4 Cells
• Do asgmt 1-10

Done with the above?

• Work on the next week, see reader
• study for the test yourself or practice flashcards

Zw = Working with whispering

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

Koen and Revinho look at a microscopic picture of bacteria.
Koen says: The bacteria form a tissue
Revinho says: 1 bacteria is a cell.
Which statement is/are correct?

1. Koen is correct
2. Revinho is correct
3. Both are correct
4. Both are incorrect

Tidy Duty

Today these people are on tidy duty

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