9700/12 Biology May Jun 2017 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
شهریور
2017
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
When a person suffers an asthma attack, the tubes of the gas exchange system narrow and extra mucus is produced.
Which changes occur during an asthma attack?
1 Activity of ciliated epithelium increases.
2 Endocytosis in goblet cells increases.
3 Smooth muscles are more active.