Paper 1, Oct Nov 2004 | Cambridge AS - A Level Biology (9700) Past Papers
CIE
AS & A Level
Biology (9700)
بهمن
2004
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 When sucrose is loaded into the phloem it has to travel from mesophyll cells to a companion cell and then into the phloem.
In many plants, proton pumps and co-transporter molecules are involved in this process.
Which row shows the relative concentrations of sucrose in each type of cell?
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