1. where does mechanical digestion begin?

a. the esophagus
b. the large intestine
c. the mouth
d. the small intestine

2. urine is excreted from the body through the

a. ureter
b. urinary bladder
c. urethra
d. renal vein

What part of the brain is highlighted in the diagram below?

This is the process of making a prediction based on the results of prior observations of similar events.

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.