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34 terms

Phys Lab Quiz 7

STUDY
PLAY
increases the rate of a chemical reaction without becoming part of the product
catalyst
provides a standard of comparison for test results
control
biological catalyst; protein in nature
enzyme
substance on which a catalyst works
substrate
end product of proteins
amino acids
end product of carbohydrates
simple sugars
end product of fats
fatty acids and glycerol (monoglycerides)
used to test for protein hydrolysis, which was indicated by a yellow color
BAPNA
used to test for presence of starch, which was indicated by a blue-black color
Lugol's iodone (IKI)
used to test for the presence of fatty acids, which was evidenced by a color change from blue to pink
litmus
used to test for the presence of reducing sugars (maltose, sucrose, glucose) as indicated by a blue to green or orange color change
Benedict's solution
what produces secretin
intestinal mucosa
target organs and effects of secretin
stimulates pancreas to release bicarbonate-rich fluid; stimulates the liver to secrete bile
what produces gastrin
stomach cells
target organs and effects of gastrin
acts on stomach glands to increase their secretory activity (particularly of HCl)
what produces cholecystokinin
intestinal cells
target organs and effects of cholecystokinin
stimulates the release of enzymes from the pancreas, causes gallbladder contraction and inhibits gastric secretion
mechanism for monosaccharide absorption? where does it absorb to?
mostly active transport; blood
mechanism for fatty acid and glycerol absorption? where does it absorb to?
diffusion; mostly lymph, some blood
mechanism for absorption of amino acids? where does it absorb to?
active transport; blood
mechanism of water absorption? where does it absorb to?
osmosis (diffusion); blood
mechanism of Na+, Cl-, Ca2+ absorption? where do they absorb to?
Na+, Ca2+ active transport, Cl-diffusion; blood
organ producing salivary amylase?
salivary glands
site of action for salivary amylase?
oral cavity
substrate of salivary amylase?
starch
optimal pH for salivary amylase?
6.7 - 7.0
organ producing trypsin?
pancreas
site of action for trypsin?
small intestine
substrate of trypsin?
proteins
optical pH for trypsin?
8.0
organ producing lipase (pancreatic)
pancreas
site of action for pancreatic lipase
small intestine
substrate for pancreatic lipase
fats
optimal pH for pancreatic lipase?
7.4 - 8.0