Answer to Question 1
Mechanical digestion consists of mastication, deglutition, and peristalsis. Chemical digestion consists of the action of enzymes and acid to break down food.
Answer to Question 2
The prostate gland is a round gland at the base of the bladder. It completely surrounds the first part of the urethra and produces prostatic fluid, which is a milky substance that makes up some of the volume of the semen. The prostatic fluid contains an antimicrobial substance that acts against bacteria in the woman's vagina, as well as a substance that activates enzymes in the head of a spermatozoon so that it can penetrate the woman's ovum to fertilize it.
The chemical structure of mescaline, derived from the peyote cactus
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
A mechanical returnless fuel system. The bypass regulator in the fuel tank controls fuel line ...
The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ...
Alcoholic fermentation Chemical Equation
Pancreas: Digestion Wunderkind