6. The Membrane

Plasma and interstitial fluid have ______ concentrations of nutrients and waste products.

Chloride ion is reabsorbed in the thick ascending limb of the nephron primarily by which of the following mechanisms?

What is mediated transport in the context of membrane transport?

Which of the following best describes the process of facilitated diffusion across a cell membrane?

Which of the following is an example of antiport in membrane transport?

Which of the following statements regarding dialysis is correct?

Roots absorb which of the following substances from the soil?

Where do plants lose the most water from?

Which type of cellular process is most likely used by an amoeba to obtain food?

What is the major difference between saturated and unsaturated zones in the context of membrane transport?

A characteristic common to both diffusion and active transport is that:

In the process of translocation in plants, which substances primarily move downward from the leaves to other parts of the plant?

Which of the following is an example of secondary active transport?

In the alveoli of the lungs, air crosses into and out of the capillaries by what process?

In the context of diffusion theory, which of the following best describes the movement of molecules across a cell membrane?