2.6 cell division

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

2.6: the cell division

Planning of today

• you will get some information about 'cell division' 
• in the next lesson we will make a note
• In this lesson you will see informative videos and take part in a quiz to see what you already know.
• Log in with your own name

Try to describe what you're seeing here right now!

Cell division

Cell division is happening constantly in your body:

• 3,5 kg of new skincells every year
• 200.000.000.000 new bloodcells every day

Cells also die a lot!

• More new cells than dead cells > growth

Cell cycle

Cell cycle

• 1 daughter cell > specialised cell > heartcell, musclecell, bloodcell, etc.
• 1 daughter cell > stem cell > parent cell
• Stem cells can divide into new cells
• Stem cells don't specialise,
  but they're responsible for growth
  and for the recovery of the body 
  tissues
• Bone marrow: fat cell/bone cell/
  blood cell

skin cells

nerve cell

blood cells

embryonic stem cell

A human stem cell divides.
The daughtercells are called cell A and cell B.
How many chromosomes are in cell A? (only use numbers)

Cell A is a stem cell.
Cell A divides into cell B and C.
Cell B becomes a liver cell.
What happens with cell C?

1. Becomes a liver cell
2. Becomes a body cell
3. Becomes a stem cell
4. Impossible to tell

Homework

(in Peppels....)

Learn for the test! Unit 2! 
Make the assignments from 2.6