6.1 Digestion Flashcards
what happens to Nucleic acids during digestion?
They are ingested as DNA and RNA and broken down into nucleotides
what happens to proteins during digestion?
they are ingested as proteins and are broken down into amino acids
what happens to lipids during digestion?
broken down into glycerol and fatty acids
what happens to carbohydrates during digestion?
ingested as mono, di, or polysaccharides and broken down into monosaccharides
what is the role of enzymes during digestion?
speed up chemical reactions in digestion without needing to raise body temp
what is peristalsis?
muscular contractions that moves food through the digestive tract (squeezing action)
where does peristalsis occur?
both around and down the alimentary canal
what is contained in the inside of a small intestine?
longitudinal muscle, circular flesh, villi, lumen (in order form outside to inside)
what enzymes does the pancreas produce?
lipase, amylase, trypsin
What does the digestion of starch by amylase produce?
maltose
What does the digestion of starch by amylase produce?
maltose
what is the substrate of lipase
tryglycerides
what is the source of lipase
pancreas
what is the pH optimum of lipase?
8
What processes occur during assimilation and absorption of lipids?
assimilation: lipids are incorporated into new membranes
