41.2 Food Processing

Question 1

4 distinct stages

Answer 1

1) ingestion
2) digestion
3) absorption
4) elimination

Question 2

ingestion

Answer 2

the act of eating

Question 3

digestion

Answer 3

food breaks down small enough for the body to absorb

• large molecules-> components
• –mechanical (chewing)
• –enzymatic hydrolysis (chemicals break down bonds in macromolecules)

Question 4

enzymatic hydrolysis

Answer 4

-enzymes break bonds by adding water

polysaccharides & disaccharides -> sugars
proteins->amino acids
nucleic acid->nucleotides
fats & phospholipids-> fatty acids and other

Question 5

absorption

Answer 5

animal cells take up the small molecules

Question 6

elimination

Answer 6

undigested stuff pass out of the digestive system