Which protein serves as a chemical messenger? hemoglobin actin myosin insulin

D) Insulin

Explanation:

I took a quiz with this answer and got the question correct ^^ Insulin also helps to regulate blood sugar levels, which is an example of Insulin being a chemical messenger.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick