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Recent content by Syeeeer

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A level Biology: Post your doubts here!

Thank you :)
- Syeeeer
- Post #2,271
- Nov 3, 2013
- Forum: A-Levels
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A level Biology: Post your doubts here!

Assalamualaikum. Can anyone help me with this question? Explain why, in gene technology, a promoter needs to be transferred along with the desired gene. Mark Scheme: 1. promoter, initiates transcription/switches on gene/causes gene expression/AW; 2. ref. binding of, RNA...
- Syeeeer
- Post #2,262
- Oct 29, 2013
- Forum: A-Levels
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Mathematics: Post your doubts here!

Can anyone explain to me when to use Fr = µR and Fr ≤ µR ?
- Syeeeer
- Post #9,932
- Oct 16, 2013
- Forum: A-Levels
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Chemistry: Post your doubts here!

Thank you so much! :-) aiskw1, thanks for helping as well!
- Syeeeer
- Post #3,220
- Nov 21, 2012
- Forum: A-Levels
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Chemistry: Post your doubts here!

For Question 4, you need to find the volume of oxygen that is not used up as well as the volume of carbon dioxide produced. CH4 + 2O2 ----> CO2 + 2H20 ( Since 20cm3 is used up, 50cm is left (70cm3 - 20cm3) and 10 cm3 of CO2 is produced. Add the total volume = 60cm3 ) C2H6 + 7/2 O2 ---->...
- Syeeeer
- Post #3,201
- Nov 20, 2012
- Forum: A-Levels
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Chemistry: Post your doubts here!

Can anyone help me with questions 9 and 11? http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf Any help is appreciated :-)
- Syeeeer
- Post #3,200
- Nov 20, 2012
- Forum: A-Levels

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