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