Questions

An enzyme is a variety of catalyst and is the relation between tham. A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction.

Pollen is a male plant gamete. When microspores produced after meiosis process on microsporangia of male gametophyte undergo mitosis and forms pollen grains.

Options A, C and E in the absence of a proper subject add the ‘bag’ automatically to the verb ‘racing for the bus’. So, it does not make any sense as it would mean that the bag is racing for the bus. Option B is incorrect because of the fragment ‘making the documents lose’. Option D doesn't convey the proper meaning.

A hard copy of a document is a physical object which is printed on printer.