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First of all, once proteins reaches stomach, HCL (Hydrochloric acid) due to its high acidity partially denatures proteins and activates pensinogen (secreted by the gastric glands) into an enzyme pepsin. W...

So, humans and plants are made up of many cells, and these cells and what are in these cells play a key role in the survival of the organism.Humans and plants share many of the components...

Natural selection is part of Charles Darwin's theory of evolution.
It is when a species adapts to changes in the environment, allowing...

Respiration is needed in order for ATP to be produced by the body in order for it to carry out a variety of functions. In order for the process of repsiration to occur oxygen is needed. Oxygen is inhaled ...

For fertilisation to occur, the pollen (male gamete) of a flower must come in contact with the ovule (female gamete), which is contained within the pistil, of another flower. A pollinator (insect such as ...