what statement? You didnt show any.
Excited electrons are transferred to an electron transport chain.
The type of organism/agent is specific n terms of mechanism of causing infection as well as the symptoms being produced. Knowing the agent/organism allows the identification of a particular treatment which will be effective against that particular organism, and will not harm the good microbes present inside the body.
Energy can only be transformed. You cannot destroy energy or create it. For example, the potential energy when you have something sitting on a desk doesn't disappear once it falls off. It gets TRANSFORMED into kinetic energy. This happens constantly. Energy, the ability to do work or cause a change, is always being reused in different forms. Hope this helped!
Answer:
DNA replication is the biological process of producing two identical replicas of DNA from one orginal DNA molecule.
DNA replication occurs when the DNA strands unzip and the orginal strands of DNA serve as a template for new nucleotides to join and form a new strand. In needs to occur because existing cells divide to produce new cells.