9700/12 Biology Feb Mar 2023 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
خرداد
2023
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
75 دقیقه
پیش نمایش صفحه اول فایل
Neda Bani A scientist carried out an experiment to separate the organelles in an animal cell by mass.
The scientist mixed the cells with a buffer solution which had the same water potential as the cells. He then broke the cells open with a blender to release the organelles.
The extracted mixture was filtered and then spun in a centrifuge at a speed to separate the heaviest organelle. This sank to the bottom, forming a solid pellet, 1.
The liquid…
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