NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an example of an enzyme?
A
glucose
B
lipase
C
DNA
D
polysaccharide
Explanation: 

Detailed explanation-1: -Most lipases act at a specific position on the glycerol backbone of a lipid substrate (A1, A2 or A3). For example, human pancreatic lipase (HPL), converts triglyceride substrates found in ingested oils to monoglycerides and two fatty acids.

Detailed explanation-2: -Examples of these lipases are Candida rugosa, Corynebacterium acnes, Staphylococcus aureus. Additionally, lipases showing fatty acid specificity is much less common compared to other groups of lipases. Geotrichum candidum is the most common fatty acid specific lipase that shows preferences toward oleic acid.

Detailed explanation-3: -Typical natural lipase substrates include, in order of amphipathicity, long aliphatic chain acyl esters of cholesterol (cholesteryl esters), triacyl esters of glycerol (triacylglycerols), acyl esters of long chain alcohols (wax esters), diacyl esters of glycerol (diacylglycerols), and monoacyl esters of glycerol.

Detailed explanation-4: -Lipase is an enzyme that breaks down triglycerides into free fatty acids and glycerol by catalyzing the hydrolysis of the ester bonds in triglycerides.[5] Lipases are present in pancreatic secretions and participate in fat digestion and metabolism.

Detailed explanation-5: -Lipases are digestive enzymes that catalyse the hydrolysis of fat (lipid, triglyceride) into free fatty acids (FFA) and monoglycerides, molecules that can be absorbed into the bloodstream [1].

There is 1 question to complete.