Edexcel IGCSE Biology Paper 2 - 11th June 2018 Discussion

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sharika1212
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#1
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#1
Tomorrow's Biology paper ... anything to be clear about or any thoughts !?
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Harry Xu
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#2
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#2
2B or 2BR?
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sharika1212
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#3
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#3
(Original post by Harry Xu)
2B or 2BR?
2B
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Harry Xu
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#4
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#4
(Original post by sharika1212)
2B

Soz can't help I do BR
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sharika1212
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#5
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#5
(Original post by Harry Xu)
Soz can't help I do BR
np!
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username3961962
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#6
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#6
Probably be same standard with focus on heart.
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xoxohanaxoxo
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#7
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#7
what about the eye? i can't remember anything on paper 1
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Edexcelcandidate
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Pls can someone explain nitrification?
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Harry Xu
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#9
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(Original post by Edexcelcandidate)
Pls can someone explain nitrification?
So basically there is decomposition (of urine) so there is ammonium.
Nitrification is when the ammonium is turned into nitrites then nitrates.
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mervynm
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#10
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#10
thoughts for the 2BR paper?
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oliwyatt02
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#11
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#11
I reckon nitrogen cycle, heart and eye will all be on there
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blackhound333
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#12
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#12
(Original post by oliwyatt02)
I reckon nitrogen cycle, heart and eye will all be on there
I agree here. Can't remember if plants came up on paper 1B? (I'm doing 2B tomorrow)
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LauraKazuto
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#13
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#13
What is the difference between 2b and 2br?
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LordFifth
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#14
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#14
(Original post by sharika1212)
Tomorrow's Biology paper ... anything to be clear about or any thoughts !?
PP2 topics-
1. pH effect enzymes
2. Turgid and flaccid plant cells
3. Balanced diet and how do energy requirements vary in different people
4. Measuring energy content in food
5. Structure and function of the phloem
6. Experiments investigating respiration – looking at CO2 and heat given off
7. Net exchange of gases in plants and experiments to show this
8. How platelets clot the blood
9. Vaccination
10. The iris reflex and how the eye focusses light on near and far objects
11. The skin
12. Germination of seeds
13. Codominance in genetics
14. Factors that increase mutations
15. The water cycle and the nitrogen cycle
16. Sewage in water systems
17. Yogurt production
18. Fermenters
19. The term transgenic
20. Advantages and disadvantages of cloning I'll also credit the youtube channel i got this from:
https://www.youtube.com/watch?v=jGnGYhahpkU
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sparta_2002
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#15
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#15
(Original post by LordFifth)
PP2 topics-
1. pH effect enzymes
2. Turgid and flaccid plant cells
3. Balanced diet and how do energy requirements vary in different people
4. Measuring energy content in food
5. Structure and function of the phloem
6. Experiments investigating respiration – looking at CO2 and heat given off
7. Net exchange of gases in plants and experiments to show this
8. How platelets clot the blood
9. Vaccination
10. The iris reflex and how the eye focusses light on near and far objects
11. The skin
12. Germination of seeds
13. Codominance in genetics
14. Factors that increase mutations
15. The water cycle and the nitrogen cycle
16. Sewage in water systems
17. Yogurt production
18. Fermenters
19. The term transgenic
20. Advantages and disadvantages of cloning I'll also credit the youtube channel i got this from:
https://www.youtube.com/watch?v=jGnGYhahpkU
what are the factors that increase mutations? and what is transgenic and what are ads and dis of cloning???? help me
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mehhh1234
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#16
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#16
(Original post by sparta_2002)
what are the factors that increase mutations? and what is transgenic and what are ads and dis of cloning???? help me
factors tht increase mutations : mutagens such as ionising radiation- UV, gamma
transgenic : when an organism contain a gene from another organis usually to produce a particular protein
adv and disadv of cloning -
adv- produce gentically identical offspring .
no varairion.
can produce anytime of the year and is fast
more offspring

disadv- no varaiation and so doesnt lead to evolution.
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charcharlewis
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#17
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#17
(Original post by LordFifth)
PP2 topics-
1. pH effect enzymes
2. Turgid and flaccid plant cells
3. Balanced diet and how do energy requirements vary in different people
4. Measuring energy content in food
5. Structure and function of the phloem
6. Experiments investigating respiration – looking at CO2 and heat given off
7. Net exchange of gases in plants and experiments to show this
8. How platelets clot the blood
9. Vaccination
10. The iris reflex and how the eye focusses light on near and far objects
11. The skin
12. Germination of seeds
13. Codominance in genetics
14. Factors that increase mutations
15. The water cycle and the nitrogen cycle
16. Sewage in water systems
17. Yogurt production
18. Fermenters
19. The term transgenic
20. Advantages and disadvantages of cloning I'll also credit the youtube channel i got this from:
https://www.youtube.com/watch?v=jGnGYhahpkU
Btw those are only topics for just Paper 2 and not 1. Anything can come up tomorrow,obvs some of them will but a lot of other stuff
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sparta_2002
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#18
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#18
guys what are 3 abiotic factors and 3 biotic factors
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mehhh1234
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#19
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#19
Whats dat?
(Original post by sparta_2002)
guys what are 3 abiotic factors and 3 biotic factors
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Kaun_Myat
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#20
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#20
For 2BR. What bird is the least likely to survive?
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