<span>In the lock-and-key model of enzyme action, the "Substrate" fits into the "Active site" of the enzyme
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Answer:
A. Class
Explanation:
Kingdom can be answered but the most specific is class
Answer:
provide structure and support for cells. On a larger scale, they also allow the body to move. These proteins bind and carry atoms and small molecules within cells and throughout the body.
Answer:
A. Parasitism, because the flee is benefitting and the mammal is harmed.
Explanation:
Parasitism is when one organism which is a parasite lives on another which is the host, and gaining benefits from it and at the same time maiming havoc to it. Parasitism is common among living organisms. Animals are most times the host to a range of parasitic organisms which include viruses, bacteria, fungi,protozoa, also flea, tick, mites etc.
Parasites like fleas, tick and leeches live on the body surface of their host, which is make them ectoparasites while those that live inside their hosts are endoparasites.
