Practice Questions

TLS Online TPP Program

#Question id: 10546

Given below are certain statements regarding plant-pathogen interactions: which one of the following is incorrect?

#Unit 6. System Physiology – Plant

Plants possess pattern recognition receptors (PRRs) that perceive microbe-associated molecular patterns (MAMPs) present in specific class of microorganisms but are absent in the hosts
The pattern recognition receptors (PRRs) perceive MAMPs or DAMPs by cell surface initiates a localized basal defense response called MAMP-triggered immunity
Effectors bind to their PRRs and R proteins defense responses are induced known as effector-triggered immunity
Systemin is an example of a plant-derived effector molecules found in tomato that is produced in response to wounding associated with herbivore activity

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TLS Online TPP Program

#Question id: 27064

#Unit 1. Molecules and their Interaction Relevant to Biology

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

TLS Online TPP Program

#Question id: 27065

#Unit 1. Molecules and their Interaction Relevant to Biology

Determine R and S Configurations On A Fischer Projection given below

TLS Online TPP Program

#Question id: 27066

#Unit 1. Molecules and their Interaction Relevant to Biology

Determine R and S Configurations On A Fischer Projection given below

TLS Online TPP Program

#Question id: 27067

#Unit 1. Molecules and their Interaction Relevant to Biology

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

#Unit 1. Molecules and their Interaction Relevant to Biology

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

TLS Online TPP Program

#Question id: 27069

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct option regarding the stereochemistry of given compound