Zinc (zn) - micronutrients, Biology

Assignment Help:

Zinc (Zn) - Micronutrients

In its function in some enzyme systems, zn2+ resembles Mn2+ in that it brings about substrate binding and conformational changes in enzymes. A number of enzymes are thus activated in more or less the same way by Mn2+, Mg2+, or zn2+. Zn is actively involved in the N metabolism of the plant.

In Zn deficient plants, protein synthesis and protein levels are markedly lowered, and amino acids and amides accumulate. Zn deficiency affects protein metabolism through the inactivation of RNA polymerase. It affects structural integrity of ribosomes, and enhances RNA degradation by increasing RNase activity. Zn is also required for the synthesis of indole acetic acid from tryptophan.


Related Discussions:- Zinc (zn) - micronutrients

Illustrate spoilage of milk and milk products, Q. Illustrate Spoilage of Mi...

Q. Illustrate Spoilage of Milk and Milk Products? Milk is a wholesome food and so it is generally consumed in its basic form or with the addition of a beverage supplement. Mil

What are mycotoxins, Q. What are mycotoxins? How are these produced and w...

Q. What are mycotoxins? How are these produced and where are these found? Are these naturally-occurring or produced? What is their significance? First what are mycotoxins?

Explain oxygen concentration - lipid oxidation, Oxygen concentration Wh...

Oxygen concentration When oxygen is abundant, the rate of oxidation is independent of oxygen concentration, but at very low oxygen concentration, the rate is approximately prop

Five kingdom classifications, Five Kingdom Classifications Biology, as...

Five Kingdom Classifications Biology, as you know, is the study of life, living things, and their relationship to one another and to their environment. This branch of Science

Explain atp molecules in photophosphorylation, Q. How is photic energy abso...

Q. How is photic energy absorbed by chlorophyll transfered to ATP molecules in photophosphorylation and How will be the resulting ATP used? Light excites energizes and chloroph

The non-oxidative phase generates ribose precursors, The non-oxidative ph...

The non-oxidative phase  generates  ribose precursors The non-oxidative phase of  the pathway,  including the following reactions, converts pentose-5-phosphate to other sugars.

Explain about the sucralose - artificial sweeteners, Explain about the Sucr...

Explain about the Sucralose - artificial sweeteners? Sucralose (1, 6-dichloro-1, 6-dideoxy-β-D-fructofuranosyl-4-chloro-4-deoxy-α-D- galactopyranoside) is the only non-nutritiv

Causes of air pollution, Causes of Air Pollution We known about the c...

Causes of Air Pollution We known about the composition of atmosphere, its major and minor constituents. The composition of atmosphere has remained the same for thousands of y

What is stenotic and regurgitant lesions, Q. What is Stenotic and regurgita...

Q. What is Stenotic and regurgitant lesions? The normal cardiac valves offer little resistance to blood flow even when flow velocity is high. When stenosis develops, the valve

Bones, which bone forms the non-moving muscle attachment in the hip joint

which bone forms the non-moving muscle attachment in the hip joint

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