2TTO Ch 4.5

Welcome everyone 
 Think about...
  • Take off your coat, hat/cap off.
  • Mobile in the phone bag (on silent).
  • Book (laptop) + notebook, pen on the table. Bag on the floor.
  • Sit in your own place.
  • You can eat and drink in the canteen.
  • 5 minutes.
timer
5:00
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Slide 1: Diapositive
BiologieMiddelbare schoolvwoLeerjaar 2

Cette leçon contient 25 diapositives, avec quiz interactifs, diapositives de texte et 2 vidéos.

time-iconLa durée de la leçon est: 90 min

Éléments de cette leçon

Welcome everyone 
 Think about...
  • Take off your coat, hat/cap off.
  • Mobile in the phone bag (on silent).
  • Book (laptop) + notebook, pen on the table. Bag on the floor.
  • Sit in your own place.
  • You can eat and drink in the canteen.
  • 5 minutes.
timer
5:00

Slide 1 - Diapositive

Chapter 4.5 fertilisation

Slide 2 - Diapositive

Planning
  • Make exercise 1 until 6 (skip 5) from the previous lessons 4.4
  • Lesson goals
  • Videos and explanation 
  • End of class + homework for next week
timer
15:00

Slide 3 - Diapositive

Lesson goals 4.5
At the end of this lesson you know: 
  • How human fertilisation works
  • What the difference is between fraternal twins and identical twins

Slide 4 - Diapositive

Which system regulates hormones?
A
Reproductive system
B
Endocrine system
C
Nervous system
D
Digestive system

Slide 5 - Quiz

Which gland produces hormones to start the production of reproductive cells?
A
Pituitary gland
B
Ovaries
C
Hypothalamus
D
Thyroid gland

Slide 6 - Quiz

Which of the following is not a part of the male reproductive system
A
Penis
B
Testes
C
Uterus
D
Scotum

Slide 7 - Quiz

In which part of the female reproductive system do the egg cells develop?
A
Fallopian tube/Oviduct
B
Ovaries
C
Uterus
D
Vagina

Slide 8 - Quiz

In which part of the female reproductive system does the fertilised egg cell grow into a baby?
A
Fallopian tube/Oviduct
B
Ovaries
C
Uterus
D
Vagina

Slide 9 - Quiz

What regulates the menstrual cycle?
A
Enzymes
B
Hormones
C
Menopause
D
Blood flow

Slide 10 - Quiz

Link the hormone to the function! 
Finishing the uterus lining
Developing the egg
Development of uterus lining
Causing ovulation
Oestrogen
Progesterone
FSH
LH

Slide 11 - Question de remorquage

Human fertilisation
  • Fertilisation = the union of a human egg and sperm cell
  • The result of fertilisation is a fertilised egg cell, which contains the hereditary information from the male (via the sperm cell) and the female (via the egg cell)
  • When one sperm cell succesfully entered the egg cell, than the membrane of the egg call undergoes changes so no other sperm cell is able to enter the egg cell anymore
Fertilisation = bevruchting

Slide 12 - Diapositive

Fertilised egg
  • A fertilised egg cell is called a zygote
  • A zygote divides many times, creating a lot of cells containing the same hereditary information
  • The zygote (containing many cells) eventually implant in the uterus lining

Slide 13 - Diapositive

Slide 14 - Vidéo

What is fertilisation?
A
The release of the egg cell from the ovaries
B
The dividing of the zygote
C
Implantation of the zygote into the uterus wall
D
The union of an egg cell and sperm cell

Slide 15 - Quiz

The ovaries release a(n) ... egg
A
Fertilised
B
Unfertilised

Slide 16 - Quiz

The inner lining of the uterus is released when an egg is fertilised
A
True
B
False

Slide 17 - Quiz

A zygote contains the chromosomes (genetic information) of the male and the female
A
True
B
False

Slide 18 - Quiz

Twins
  • Sometimes two egg cells ovulate from the ovaries at the same time -> two egg cells may be fertilised -> two different zygotes -> fraternal twins
  • One egg cell ovulate from the ovary -> one egg cell may be fertilised -> sometimes the zygote divide into two different groups of cells -> identical twins
Fraternal twins = Twee-eiige tweeling

Identical twins = Een-eiige tweeling

Slide 19 - Diapositive

Slide 20 - Vidéo

Lesson goals achieved? 
Do you know: 
  • How human fertilisation works?
  • What the difference is between fraternal twins and identical twins?

Slide 21 - Diapositive

What is the difference between fraternal twins and identical twins?

Slide 22 - Question ouverte

What happens with the inner lining of the uterus when an egg cell is fertilised vs when an egg cell is not?

Slide 23 - Question ouverte

Lets work
  • This was a very short overview of the human fertilisation. Write down any questions you might have in the next slide of this LessonUp
  • Start making your homework (exercise 17, 18, 19, 20, 21, 22, and 24)

Slide 24 - Diapositive

Ask any questions here!

Slide 25 - Question ouverte