21) Coordinating body functions via chemical signals is accomplished by

A) the respiratory system.

B) the endocrine system.

C) the immune and lymphatic systems.

D) the integumentary system.

E) the excretory system.

What step of the scientific method relies more heavily on newly collect the data than on creativity and innovation

Why would you need a microscope to see a prokaryotic organism?

What is the specific name for the rock formed when magma cools and hardens below the earth's surface?

Cells have _ of enzymes to act as biological catalysts

What are the different methods of transport across a membrane?

A species displaying which of the survivorship curves is likely to produce the most offspring?

Which of the following statements is true? Parasites benefit their hosts. Parasitism causes both the parasite and host to adapt and evolve. All parasites stay with their host until the host dies.

What do gradualism and punctuated equilibrium have in common? A. They are both explanations of the rate of evolutionary change. B. They are both explanations that were put forth by Darwin. C. They both discredit the theory of evolution. D.

The human immunodeficiency viris (hiv) is a bloodborne pathogen that is spread by

A cell that is undergoing mitosis is examined with a light microscope. an observation that would allow for identification of the cell as an animal cell rather than a plant cell would be