9700/12 Biology May Jun 2020 Online Test | Cambridge AS and A Level MCQ
Cambridge
AS & A Level
Biology (9700)
شهریور
2020
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
Gama Admin The diagram shows the transport of ions across the cell surface membrane. Inside the cell there is a low concentration of sodium ions $\left( {N{a^ + }} \right)$ and a high concentration of potassium ions $\left( {{K^ + }} \right)$.
Outside the cell there is a low concentration of ${K^ + }$ and a high concentration of $N{a^ + }$.
The carrier molecule is a pump which exchanges $N{a^ + }$ for ${K^ + }$.
Which ionic movements are represented by the…
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