BIOB34H3 Lecture Notes - Lecture 4: Bile Acid, Monoglyceride, Parietal Cell
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Which characteristic distinguishes the circulatory system from the lymphatic system?
A. | Circulatory system transports vitamins, lymphatic system does not | |
B. | Circulatory system is pumped by the heart, lymphatic system has no pump | |
C. | Circulatory system is a transport system, lymphatic system is not | |
D. | Circulatory system contains lacteals, lymphatic system contains capillaries |
What is the role of bile in the bodyâs handling of lipids?
A. | Bile separates fatty acids from glycerol so that they can be absorbed. | |
B. | Bile attaches to a very small proportion of fat in the small intestine and causes it to be excreted. | |
C. | Bile helps keep lipids in small droplets in the small intestine. | |
D. | Bile aids in formation of lipoproteins. |
Identify the correct sequence of events in the digestion of fat.
A. | mixing into chyme, absorption, cephalic phase, digestion | |
B. | cephalic phase, digestion, mixing into chyme, absorption | |
C. | cephalic phase, mixing into chyme, digestion, absorption | |
D. | absorption, cephalic phase, mixing into chyme, digestion |
QUESTION 4
Describe how adding detergent to oil is similar to what happens in the digestive tract. What is the "detergent" in the digestive tract?
The detergent is like an enzyme and breaks the bonds in the fat molecule. The detergent represents the protease enzymes that are found in the digestive tract. | ||
The detergent is like an enzyme and breaks the bonds in the fat molecule. The detergent represents the lipase enzymes. | ||
The detergent is an emulsifier and breaks fat into smaller droplets of fat. The detergent represents the bile from your gallbladder that acts as an emulsifying agent. | ||
The detergent is an emulsifier that takes smaller droplets of fat and makes one big globule. The detergent represents the lipases in your digestive tract. |
7 points
QUESTION 5
An emulsifier digests lipids.
True
False
6 points
QUESTION 6
How does this procedure demonstrate the digestion of fats by lipase? In other words, how did you know that the fat was digested by the lipase?
Based on the chemical reaction in your lab book on pg 88, the pH indicator (limitus) turns blue so this means that H+ ions were relased when the fat was broken down by lipase (an enzyme). . | ||
Based on the chemical reaction in your lab book on pg 88, the pH indicator (limitus) turns blue so this means that OH- ions were relased when the fat was broken down by lipase (an enzyme). | ||
Based on the chemical reaction in your lab book on pg 88, the pH indicator (limitus) turns pink so this means that H+ ions were relased when the fat was broken down by lipase (an enzyme). | ||
There is no way to tell if the lipid was digested because you cannot view it under a microscope. |