Antihistamine drugs fall into two groups-those that block H 1 receptors and act mainly on blood vessels, and those that block H 2 receptors and act mainly on the secretion of acid in the stomach.
Biotechnology. Biotechnology, or genetic engineering, is the process of using living organisms to improve qualities of a plant by such as the plantâs ability to protect itself against damage or improving upon its ability to grow and produce.t allows for the transfer of one, or a few genes that can introduce traits such as better insect and weed control. Biotechnology at Monsanto Biotechnology is just one component of Monsantoâs three-pronged approach to delivering increased yields sustainably.
c) Traditional biotechnology is centered by active techniques which have great efficiency and accuracy. Modern biotechnology uses gene manipulation to passively engineer organism with high efficiency and accuracy.odern biotechnology uses gene manipulation to actively engineer organism with high efficiency and accuracy. Traditional biotechnology is centered by active techniques which have great efficiency and accuracy. Modern biotechnology uses gene manipulation to passively engineer organism with high efficiency and accuracy.