Which of the following hormones can pass easily through the cell membranes of target cells? O protein hormones O amine hormones O peptide hormones steroid hormones​

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Which describes the habitat of a frog?

Which organism actively hunts other