A major transport lipoprotein that has 92% lipid and 8% protein is a(n)

A major transport lipoprotein that has 92% lipid and 8% protein is a(n)

a. Chylomicron.
b. HDL (high-density lipoprotein).
c. LDL (low-density lipoprotein).
d. VLDL (very low-density lipoprotein).



Answer: D


Feedback :  VLDL's are 92% lipid and 8% protein.

Arrange these events in the order in which they occur during fat digestion, absorption, and transport: 1. chylomicrons enter lacteals 2. triglycerides, phospholipids and cholesterol coated with protein 3. fatty acids and glycerol packaged into micelles 4. bile salts emulsify fats 5. lipase digests fat

Arrange these events in the order in which they occur during fat digestion, absorption, and transport:
1. chylomicrons enter lacteals
2. triglycerides, phospholipids and cholesterol coated with protein
3. fatty acids and glycerol packaged into micelles
4. bile salts emulsify fats
5. lipase digests fat

a. 1,2,4,5,3
b. 2,5,4,3,1
c. 3,5,4,1,2
d. 4,5,3,2,1
e. 5,3,4,1,2


Answer: D


Feedback :  The sequence of events, which occur during fat digestion, absorption, and transport, is: 4,5,3,2,1.

All of these occur in the large intestine EXCEPT:

All of these occur in the large intestine EXCEPT:

a. large numbers of bacteria utilize undigested food.
b. fatty acids are absorbed.
c. vitamin K is produced.
d. sodium and water are absorbed.
e. mucus is produced.


Answer: B


Feedback :  The absorption of fatty acids does not occur in the large intestine; however, the utilization of undigested food by bacteria, the production of vitamin K, the absorption of water and sodium, and mucus production all occur in the large intestine.

Which of these hormones causes contraction of the gall bladder?

Which of these hormones causes contraction of the gall bladder?

a. cholecystokinin
b. gastrin
c. gastric inhibitory polypeptide
d. secretin
e. zymogen


Answer: A



Feedback :  Cholecystokinin causes contraction of the gallbladder.

All of these are enzymes that digest protein EXCEPT

All of these are enzymes that digest protein EXCEPT

a. lipase.
b. carboxypeptidase.
c. chymotrypsin.
d. pepsin.
e. trypsin.


Answer: A


Feedback :  Lipase digests lipids not proteins. Carboxypeptidase, chymotrypsin, pepsin and trypsin all digest proteins.

The __________ secretes peptidases and disaccharidases, whereas the __________ secretes trypsin, chymotrypsin, amylase, lipase, and nucleases.

The __________ secretes peptidases and disaccharidases, whereas the __________ secretes trypsin, chymotrypsin, amylase, lipase, and nucleases.

a. stomach, liver
b. stomach, small intestine
c. liver, small intestine
d. liver, pancreas
e. small intestine, pancreas


Answer: E


Feedback :  The small intestine secretes peptidases and disaccharidases; the pancreas secretes trypsin, chymotrypsin, amylase, lipase, and nucleases.