Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

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#Question id: 27063

#Section C (Domain-Specific Knowledge)

Determine R and S Configurations On A Fischer Projection given below

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#Question id: 27064

#Section C (Domain-Specific Knowledge)

These are three amino structure acid given below choose the correct option regarding the stereochemistry of these fig. 

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#Question id: 27065

#Section C (Domain-Specific Knowledge)

Determine R and S Configurations On A Fischer Projection given below 

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#Question id: 27066

#Section C (Domain-Specific Knowledge)

Determine R and S Configurations On A Fischer Projection given below 

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#Question id: 27067

#Section C (Domain-Specific Knowledge)

Choose the correct statement regarding the stereochemistry of amino acid

1. 16 amino acid except (Thr, Ile, Cys, Gly) L Fischer projection is equal to S and D is equal to R configuration 

2. Thr, Ile is special case because of two chiral center exist in L – Ile/Thr – 2S,3R and D-Ile/Thr–2R,3S configuration  

3. Cys exiest in L- Cys – R & D- Cys – S configuration 

4. Gly is optically inactive 

TLS Online TPP Program

#Question id: 27068

#Section C (Domain-Specific Knowledge)

Isoleucine and Threonine have two chiral carbons so exists in multiple RS configuration, choose the correct option regarding the given fig.

1. a is D-threonine is (2S, 3S) threonine

2. b is L-threonine is (2R,3S) threonine

3. a is L-threonine is (2S, 3R) threonine

4. b is D-threonine is (2R,3S) threonine