Questions

Polypeptides are assembled from Aminoacids.

Groundwater is all the water that has penetrated the earth's surface and is found in one of two soil layers. The one nearest the surface is the "zone of aeration", where gaps between soil are filled with both air and water. Below this layer is the "zone of saturation", where the gaps are filled with water.

The order may vary from compiler to compiler.

Here the multiplication will happen before the addition , but in which order the functions would be called is undefined. In an arithmetic expression the parentheses tell the compiler which operands go with which operators but do not force the compiler to evaluate everything within the parentheses first.

Ans. D.
Solution: In the given sentences banking upon is the correct phrasal verb which means basing hopes on someone/something or depending on someone for something.
Option D is incorrect because the bank does not have any relevant meaning in the given context.

Value added is determined by the difference between the price of product or service and the cost of producing it.

Added Value = Price that the product or service is sold at - cost of producing the product.