BMSC 230 -Module 11 And Module 13 -
Questions with Actual Answers.
what does the body of storage forms of? - Answer fatty acids (triacylglycerides) and glucose
(glycogen)
is there a storage depot for amino acids? - Answer no
what is not a normal biochemical role for the body's muscles? - Answer protein that can be
broken down to provide amino acids that can potentially be used for other purposes including
for fuel
what happens in a normal state with amino acids? - Answer no reservior of amino acids to
synthesize proteins and thus need them in our diet
how many grams of protein does the average human require to maintain the amino acid pool? -
Answer 70-100g
Why can't proteins be absorbed in the small intestine? - Answer intact proteins are too large
what does digestion break proteins into? - Answer amino acids as well as a small amount of di
and try peptides
what is the process where peptide bonds are cleaved? - Answer proteolysis
what is proteolysis? - Answer a hydrolytic reaction where a water molecule is added across a
peptide bond
what happens during proteolysis in digestion? - Answer begins in the stomach and continues
on in the small intestine where protein digestion is completed.
how does chewing aid in digestion? - Answer liquifies the protein in the food that increases it's
surface area and makes it a better substrate for the proteases it will encounter in the stomach in
small intestine.
what does leaving protein in your mouth for a certain amount of time do? - Answer triggers
neural effects that prepare the stomach for the protein that is on its way.
, what does chewing do for the stomach? - Answer stimulates special cells in the stomach to
secrete gastric acid- amounts to 1 litre in volume.
what is the ph of gastric juice? - Answer 2
what is the ph of 2 an equivalent to for mM HCl - Answer 100-160
what are the ingredients of gastric juice? - Answer gastrin and pepsin
what is gastrin? - Answer peptide hormone that is secreted by special cells in the stomach
what is the primary role of gastrin? - Answer stimulate acid secretion into the stomach
what is pepsin? - Answer a protease that cleaves the peptide bonds involving hydrophobic
amino acids
what is the role of pepsin? - Answer does break protein into smaller segments which facilitates
the next round of proteolysis that occurs in the small intestine.
what are the 2 purposes of the low ph? - Answer 1. causes denaturation- or folding of proteins
facilitates degradation of proteins since unfolding makes peptide bonds- many of which are
buried in the interior of the folded proteins- accessible to proteases
2. serves as an antiseptic- destroying many bacteria and viruses that are ingested when we eat.
How do the contents get neutralized before going into the small intestine so that it does not
damage the small intestine lining? - Answer pancreatic juice from the pancreas into the small
intestine
what does pancreatic juice contain? - Answer bicarbonate
which neutralizes the gastric juice to 7
proteases
which recognize different peptide bonds
what does pepsin cleave? - Answer peptide bonds following a hydrophobic amino acid
what does trypsin cleave? - Answer bonds following arginine or lysine
Questions with Actual Answers.
what does the body of storage forms of? - Answer fatty acids (triacylglycerides) and glucose
(glycogen)
is there a storage depot for amino acids? - Answer no
what is not a normal biochemical role for the body's muscles? - Answer protein that can be
broken down to provide amino acids that can potentially be used for other purposes including
for fuel
what happens in a normal state with amino acids? - Answer no reservior of amino acids to
synthesize proteins and thus need them in our diet
how many grams of protein does the average human require to maintain the amino acid pool? -
Answer 70-100g
Why can't proteins be absorbed in the small intestine? - Answer intact proteins are too large
what does digestion break proteins into? - Answer amino acids as well as a small amount of di
and try peptides
what is the process where peptide bonds are cleaved? - Answer proteolysis
what is proteolysis? - Answer a hydrolytic reaction where a water molecule is added across a
peptide bond
what happens during proteolysis in digestion? - Answer begins in the stomach and continues
on in the small intestine where protein digestion is completed.
how does chewing aid in digestion? - Answer liquifies the protein in the food that increases it's
surface area and makes it a better substrate for the proteases it will encounter in the stomach in
small intestine.
what does leaving protein in your mouth for a certain amount of time do? - Answer triggers
neural effects that prepare the stomach for the protein that is on its way.
, what does chewing do for the stomach? - Answer stimulates special cells in the stomach to
secrete gastric acid- amounts to 1 litre in volume.
what is the ph of gastric juice? - Answer 2
what is the ph of 2 an equivalent to for mM HCl - Answer 100-160
what are the ingredients of gastric juice? - Answer gastrin and pepsin
what is gastrin? - Answer peptide hormone that is secreted by special cells in the stomach
what is the primary role of gastrin? - Answer stimulate acid secretion into the stomach
what is pepsin? - Answer a protease that cleaves the peptide bonds involving hydrophobic
amino acids
what is the role of pepsin? - Answer does break protein into smaller segments which facilitates
the next round of proteolysis that occurs in the small intestine.
what are the 2 purposes of the low ph? - Answer 1. causes denaturation- or folding of proteins
facilitates degradation of proteins since unfolding makes peptide bonds- many of which are
buried in the interior of the folded proteins- accessible to proteases
2. serves as an antiseptic- destroying many bacteria and viruses that are ingested when we eat.
How do the contents get neutralized before going into the small intestine so that it does not
damage the small intestine lining? - Answer pancreatic juice from the pancreas into the small
intestine
what does pancreatic juice contain? - Answer bicarbonate
which neutralizes the gastric juice to 7
proteases
which recognize different peptide bonds
what does pepsin cleave? - Answer peptide bonds following a hydrophobic amino acid
what does trypsin cleave? - Answer bonds following arginine or lysine
