4.6 Pregnancy

One + one = three




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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 3

In deze les zitten 30 slides, met interactieve quizzen, tekstslides en 3 videos.

time-iconLesduur is: 45 min

Onderdelen in deze les

One + one = three




Benodigheden
- iPad
- Pen, pencil
- note bokk
- binder

For a mark
- No


Lessonup
- Yes
Bags
in bag closet
Phones 
in phone closet

Slide 1 - Tekstslide

today''s program 

review par. 4.5, homework check

learning objectives:
  • what is cleavage and where does it take place?
  • what is implantation and why is this process needed for a healthy embryo to form?
  • what structures are there to nourish and support the developing foetus? 

Slide 2 - Tekstslide

how to answer 'explain' questions 
-> the question is most of the time : cause-->effect 
-> the answer is based on facts that needs be combined in order to come to a conclusion

cause = facts
effect= conclusion (=confirmation of the question) 

Slide 3 - Tekstslide

3. Why is it sufficient for only the head of the sperm cell to enter the egg cell?
--> Facts: 
Fertilisation is the fusion of the nuclei of sperm and egg cell
The head of the sperm cell contains the nucleus


Explanation? 

--> Conclusion:
It is sufficient for only the head of the sperm cell to enter the egg cell 

Slide 4 - Tekstslide

3. Why is it sufficient for only the head of the sperm cell to enter the egg cell?
--> Facts: 
Fertilisation is the fusion of the nuclei of sperm and egg cell
Fertilisation is the fusion of hereditary information from both parents 
The head of the sperm cell contains the nucleus
Explanation: 
In order to combine the hereditary information of both parents the fusion of the nuclei of the egg and sperm cell is necessary. As the nucleus of the sperm cell is in the head, no other parts of the sperm cell need to enter the egg cell
--> Conclusion:
It is sufficient for only the head of the sperm cell to enter the egg cell 

Slide 5 - Tekstslide

4. Explain why you have inherited characteristics from both your parents.
a. What facts are important to answer the question?
b. What 's the conclusion hidden in the question?



Slide 6 - Open vraag

4. Explain why you have inherited characteristics from both your parents.




Slide 7 - Open vraag

5. Do you think that the nuclei are also copied during the zygote’s cell divisions? Explain how you came up with your answer.
a. What are the facts? b. What's the conclusion?

Slide 8 - Open vraag

5. Do you think that the nuclei are also copied during the zygote’s cell divisions? Explain how you came up with your answer.

Slide 9 - Open vraag

Slide 10 - Video

today''s program 

review par. 4.5, homework check

learning objectives:
  • what is cleavage and where does it take place?
  • what is implantation and why is this process needed for a healthy embryo to form?
  • what structures are there to nourish and support the developing foetus? 

Slide 11 - Tekstslide

what and where is cleavage? 
5-10 days after fertilisation there is the implantation of the embryo; 
on what day number? 

Slide 12 - Tekstslide

zygote -> morula-> blastocyst -> embryo

Slide 13 - Tekstslide

what is cleavage?
(choose the best answer)
A
cell divisions during which the zygote grows into a tiny hollow ball of cells
B
cell divisions of the zygote in the oviduct until implantation
C
cell division during which the embryo grows into the first foetal stage
D
cell divisions during which the zygote grows into an foetus

Slide 14 - Quizvraag

implantation 






The process of the embryo attaching to and implanting into the endometrium.

Slide 15 - Tekstslide

different stages - different names 
zygote = fertilised egg
embryo =  after cleavages, at implantation 
foetus = 10 weeks of pregnancy, the beginning of all organs are present. From now these only have to grow and develop. 

Slide 16 - Tekstslide

Slide 17 - Tekstslide

huiswerk
lrn par 4.6 
do exercises 1-4 of par. 4.6

Slide 18 - Tekstslide

One + one = three




Benodigheden
- iPad
- Pen, pencil
- note bokk
- binder

For a mark
- No


Lessonup
- Yes
Bags
in bag closet
Phones 
in phone closet

Slide 19 - Tekstslide

today''s program 

Learning objectives:  you are able to 
  • describe foetal development
  • explain two types of prenatal diagnosis 


Slide 20 - Tekstslide

After .... weeks of pregnancy the embryo is called foetus
A
8
B
9
C
10

Slide 21 - Quizvraag

Pregnany lasts for ... weeks after fertilisation
A
38
B
39
C
40
D
41

Slide 22 - Quizvraag

The earliest moment a neonatal can be given birth to is after ... weeks of pregnancy
A
23
B
24
C
25
D
26

Slide 23 - Quizvraag

It can't be be born earlier because ...
A
The lungs are underdeveloped so it cannot breath
B
The heart can't beat by itself
C
The neonatal does not have teeth in order to eat
D
the mother cannot breast feed the neonatal

Slide 24 - Quizvraag

the placenta belongs to ..
A
the mother
B
the foetus
C
both mother and foetus

Slide 25 - Quizvraag

synonym to foetal diagnosis is ...
A
postnatal check
B
postnatal screening
C
prenatal screening
D
prenatal check

Slide 26 - Quizvraag

Slide 27 - Video

Slide 28 - Video

homework
lrn par. 4.6 Pregnancy
finish exercises 1-7 
read par. 4.7Childbirth

Slide 29 - Tekstslide

exit ticket  
what did you learn about foetal development?
how could prenatal screening help to detect an unborn with Down's  Syndrom?

Slide 30 - Tekstslide