Single cellular organisms can rely on diffusion to move gases,nutrients,and wastes across their single membrane.What feature of the cardiovascular system overcomes this problem for multicellular organisms?

Question

Quizplus · Accepted Answer

The capillary blood vessels found throughout the body of multicellular organisms allow for the even distribution and diffusion of gases, nutrients, and wastes, overcoming the reliance on diffusion across a single membrane that is used by single-cell organisms. The cardiovascular system also plays a role in this by transporting blood to and from the capillaries through the heart and circulatory system. However, options A, C, and D are not entirely accurate or complete explanations of how the cardiovascular system overcomes the problem of diffusion for multicellular organisms. Option B is also incorrect, as diffusion still occurs in multicellular organisms but is enhanced by the cardiovascular system.

Single Cellular Organisms Can Rely on Diffusion to Move Gases,nutrients,and