Which of the following accurately describes a characteristic of fungi?
a. parasitic fungi often form symbiotic relationships with algae to form lichens. b. mutualistic fungi form symbiotic relationships with plants to form mycorrhizae. c. parasitic fungi are responsible for benefits to plants. d. mutualistic fungi are responsible for producing some human diseases.

How do cells grow and reproduce to maintain homeostasis?

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.