Explain transport and utilization of vitamin a, Biology

Assignment Help:

Explain Transport and Utilization of Vitamin A?

The efficacy of the intestines to facilitate absorption and utilization of retinoid s and carotenoids depends upon the cellular uptake of these compounds into the intestinal mucosal cell, bioavailability or passage of the molecules beyond the intestinal mucosa into the body with the potential for storage or use in tissues and bioconversion i.e., production of active retinoid from provitmin A carotenoids. Inside the intestinal cells, ß-carotene is cleaved by a cytosolic enzyme 15-15' oxygenase to form retinaldehyde, which is then reduced by the microtonal enzyme retinal reductase to retinal. Thus,  the ultimate product formed in the intestines is retinol, which is then re-esterifies with  long chain fatty acids by intra cellular retinol-binding proteins (CRBP) and packed  into chylomicron containing cholesterol esters, phospholipids, triacylglycerol etc. What happens to this chylomicrons.

 


Related Discussions:- Explain transport and utilization of vitamin a

Define fermented baked preparations, Normal 0 false false f...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

What do you mean by oxalates, Q. What do you mean by Oxalates? Oxalates...

Q. What do you mean by Oxalates? Oxalates are widely distributed in plant foods mostly in the form of calcium salts. Oxalates are known to interfere with calcium absorpti

Define the symptoms in blood of pernicious anaemia, Define the Symptoms in ...

Define the Symptoms in Blood of Pernicious Anaemia? Blood: The RBC count is low-1.5-2.5 million per mm 3 (normal range is 4.5- 5.5 million per mm 3 ). The average diameter o

Ecretory system, excretory product of marine teleost

excretory product of marine teleost

In which field dietetics related, The field of  dietetics can be related to...

The field of  dietetics can be related to: Nutrition care and intervention focused on the individual, and Nutrition care and intervention focused on the group.

State the term - antecedent and consequence control, Antecedent and consequ...

Antecedent and consequence control Therapy and consultation cannot be effective unless the behaviours to be changed are understood within a particular context. The process of u

How to indicate an av block, During the course of a physiology laboratory, ...

During the course of a physiology laboratory, a student finds that her PR interval is 0.24 second. Concerned, she takes her own ECG again an hour later and sees an area of the ECG

What are the inheritance patterns of the rh blood system, What are the inhe...

What are the inheritance and dominance patterns of the Rh blood system? The inheritance pattern of the Rh blood system is autosomal dominant, i.e., the heterozygous manifests a

Describe the formation of fibrous tissue where it not exist, Which of the b...

Which of the below terms is used to describe the formation of fibrous tissue where it generally does not exist? Is it: a) Fibrosis b) Fibrogenesis c) Fibrositis d) Non

Chromolipid, CHROMOLIPID Formed by lipid & pigment, eg. carotene, xanth...

CHROMOLIPID Formed by lipid & pigment, eg. carotene, xanthophylls. Lycopene present in tomato & red chilli. Carrot is rich in b-carotene, converted into vitamin A.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd