Explain what a concentration gradient is and how it assists a cell in doing its work.

What will be an ideal response?


A concentration gradient is a difference in concentration of a particular molecule between the cytosol of a cell and the interstitial fluid. A concentration gradient represents potential energy because of the tendency of molecules to diffuse from areas of high to areas of low concentration.

Anatomy & Physiology

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Compact bone

A.  is located deep to spongy bone in the diaphysis. B.  is composed of tubular units called osteons. C.  has a brace-like arrangement of trabeculae. D.  is avascular. E.  All of the choices are correct.

Anatomy & Physiology

The neurons connecting the adrenal medulla to the brain have been severed during surgery.  The result will be a significant decrease in parasympathetic signaling.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

Which of the joints shown in the figure only permits back-and-forth and side-to-side movements between the articulating bones?

a) A b) B c) C d) Both A and B e) Both A and C

Anatomy & Physiology

The glomerulus is:

a. part of the renal tubules b. a network of blood capillaries c. the cup-shaped top part of the nephron d. both A and B above

Anatomy & Physiology