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Small intestines is longer (around 6m) and its luminal surface area is grossly expanded using villi and microvilli. It is the main site of action of digestive enzymes, most of which are produced by the pa...

The centripetal acceleration is the acceleration a body experiences in centripetal motion (moving in a circle or along an arc). Centripetal acceleration always points towards the centre of the circle, hen...

I will explain to students that even though they only need to use three features, it is important to learn and understand all five features to excel in the exam. This way, during the exam, the students ma...

light absorbed by pigment molecules (chlorophyll)causes electron to be raised to higher energy level; electron is passed along chain of carrier molecules in photosystem II