Lipids are organic macromolecules that serve a variety of purposes. what is the most important role of lipids?

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

What percentage of light hits earth's surface directly?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?