Paper 1, Oct Nov 2008 | Cambridge AS - A Level Biology (9700) Past Papers
Cambridge
AS & A Level
Biology (9700)
بهمن
2008
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Neda Bani Which events can occur in the nitrogen cycle?
1) Inorganic nitrogen in the atmosphere undergoes denitrification by specific prokaryotes.
2) Nitrate concentrations in the soil are increased by nitrifying bacteria in waterlogged soil.
3) Organic nitrogen in legumes passes into the soil where deamination and ammonification occurs.
4) Saprotrophic fungi living in the soil decompose organic nitrogen in faeces.
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