What type of muscle is responsible for contractions of the digestive tract and arteries? what type of muscle is responsible for contractions of the digestive tract and arteries? smooth muscle skeletal muscle striated muscle voluntary muscle cardiac muscle?

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Why is it important that fibrin is insoluble in water?

This is the interaction of two organisms where one is and the other is neither nor harmed.