PHYSIO EX 8 - chemical and physical processes of DIGESTION
optical
a spectrophometer measures _________ density
water
hydrolases are enzymes that break down large molecules into smaller subunits through the addition of _________
peptides, amino
if pepsin were digesting an actual protein substrate, the product would be _________ and _________ acids
fatty acids
one of the products of the chemical digestion of lipids is _________ _________
stomach
pepsin would be MOST active in the _________
peptidase
proteins and peptides are formed by joining amino acids with a special type of covalent bond called a peptide bond - which of the following enzymes do you think would be specific for a peptide bond? _________
starch
the reagent IKI tests for the presence of _________
glucose, polysaccharides
cellulose and starch are both polymers of _________ and _________
expected, validate
negative results with the negative controls are _________ and _________ the experiment
reducing
the Benedict's assay tests for the presence of _________ sugar
starch, carbohydrate
the substrate for AMYLASE is _________ and _________
protein, peptides
the substrate for pepsin is _________ and _________
starch
the substrate(s) for amylase is/are _________
fatty acids
what is the product of LIPID hydrolysis? _________ _________
decreases
when fatty acids are liberated by LIPASE, the pH _________
mouth, 7
where and why salivary amylase would be most ACTIVE: salivary amylase would be most active in the _________ because pH ___ is where its peak activity is
stomach
where in the body does protein digestion begin? _________
mouth, pancreas
where would pancreatic lipase be active? _________ and _________
7
which pH is ideal for pancreatic lipase digestion? pH _________
d
which of the following is NOT true of controls? a. with a negative control, a negative result is expected b. with a positive control, a positive result is expected c. a positive result with a negative control could mean that a contamination substance is present d. a negative result with a positive control is required to validate the test
specific
which of the following is TRUE of enzymes and SUBSTRATES? enzymes are _________ about the substrates they can act upon
temperature
which of the following is TRUE of enzymes? their activity can be affected by _________ and pH
maltose, glucose
which of the following is an END product of starch DIGESTION _________ and _________
glucose, maltose
which of the following is/are reducing sugars? _________ and _________
physical
which of the following is/are true of BILE? it works by a _________ process
increased
with MORE enzyme activity, the optical density _________