Physio Lab
What type of bond holds together amino acids? a. ionic b. hydrogen c. peptide d. Van der Waals
peptide
Cholesterol is a: a. precursor to steroid hormones, a structural component of cell membranes, and a dangerous fat that is absent from a healthy body b. precursor to steroid hormones and a structural component of cell membranes c. dangerous fat that is absent from a healthy body d. structural component of cell membranes e. precursor to steroid hormones
precursor to steroid hormones and a structural component of cell membranes
Fat digestion is completed here: a. rectum b. mouth c. small intestine d. large intestine e. stomach
small intestine
Protein digestion is completed here: a. small intestine b. stomach c. rectum d. mouth e. large intestine
small intestine
Which of the following can denature an enzyme? a. amylase b. saliva c. pepsin d. HCl e. bile salts
HCl
This is nicknamed good cholesterol: a. HDL b. LDL
HDL
This is nicknamed bad cholesterol: a. LDL b. HDL
LDL
A polypeptide is a sequence of: a. lipids b. proteins c. amino acids d. sugars
amino acids
Amylase is secreted by _______. a. the pancreas b. the salivary glands c. the small intestine d. the stomach e. both the salivary glands and the pancreas
both the salivary glands and the pancreas
The role of bile in digestion of fats is: a. emulsification b. dehydration c. forming enzymes d. denaturation
denaturation
Which of the following statements regarding digestion and absorption of carbohydrates is true? a. all of the choices are true b. carbohydrate digestion begins in the stomach c. lactose intolerance results from amylase insufficiency d. sucrose is absorbed by active transport across the intestinal epithelium e. digestible polysaccharides are broken down to maltose and then to glucose
digestible polysaccharides are broken down to maltose and then to glucose.
Lipase is a/an: a. stimulates pancreatic secretion b. enzyme involved in fat breakdown c. enzyme which splits polysaccharides d. hormone which stimulates acid secretion e. stimulates release of bile from the liver
enzyme involved in fat breakdown
LDL cholesterol is nicknamed "good cholesterol". a. false b. true
false
Maltase breaks down maltose into glucose and galactose. a. true b. false
false. just to glucose
Sucrase digests sucrose to: a. two glucose molecules b. glucose and galactose c. glucose and fructose
glucose and fructose
Elevated LDL cholesterol is associated with _____________ disease. a. heart b. lung c. kidney d. bone
heart
Lipoproteins that carry mostly cholesterol and phospholipids from peripheral tissues to the liver are called: a. very high-density lipoproteins (VHDLs) b. intermediate-density lipoproteins (IDLs) c. high-density lipoproteins (HDLs) d. low-density lipoproteins (LDLs) e. very low-density lipoproteins (VLDLs)
high-density lipoproteins (HDLs)
Lipids are hydrophobic, and do not usually dissolve in water. Because blood is water-based, the lipid cholesterol is combined with ________ so that it can be transported by blood. a. nothing; cholesterol is not transported in blood b. cations c. hydrophobic molecules d. hydrophilic molecules e. anions
hydrophilic molecules
This can be heard with paralytic ileus: a. hypoactive bowel sound b. borborygmus c. murmur d. hyperactive bowel sosnd
hypoactive bowel sound
What enzyme digests fat? a. bile b. amylase c. lipase d. trypsin e. pepsin
lipase
Cholesterol is a: a. lipid b. carbohydrate c. nucleic acid d. protein
lipid
Which of the following is a brush border enzyme? a. amylase b. pepsin c. trypsin d. maltase
maltase
Fat digestion begins here: a. mouth b. stomach c. small intestine d. large intestine e. rectum
mouth
Which of the following enzymes is most active at an acidic pH? a. all of the choices are correct b. pepsin c. lipase d. amylase e. trypsin
pepsin
Which of the following enzymes is most active at an acidic pH? a. pepsin b. all of the choices are correct c. trypsin d. amylase e. lipase
pepsin
Protein digestion begins here: a. stomach b. rectum c. small intestine d. large intestine e. mouth
stomach
The substance that the enzyme acts on is called its _______. a. product b. substrate c. monomer d. subunit
substrate
A triglyceride is composed of a glycerol molecule bound to three fatty acid chains. a. false b. true
true
An enzyme that will digest proteins into peptides is: a. amylase b. trypsin c. nuclease d. maltase e. lipase
trypsin