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: 27957

#Unit 1. Molecules and their Interaction Relevant to Biology

Bicarbonate + Pyruvate→ Oxaloacetate

a. This reaction catalyzed by pyruvate carboxylase

b. This reaction catalyzed by carbonic anhydrases

c. Uses biotin as cofactor of pyruvate carboxylase

d. Uses biotin as cofactor ofby carbonic anhydrases

Which of the following is true about the given reaction

TLS Online TPP Program

#Question id: 27958

#Unit 1. Molecules and their Interaction Relevant to Biology

The overall equation for Gluconeogenesis is

TLS Online TPP Program

#Question id: 27959

#Unit 1. Molecules and their Interaction Relevant to Biology

Amino acids can undergo net conversion to glucose and are said to be glucogenic and Glucogenic Amino Acids, are Grouped by Site of Entry

a. Alanine, Cysteine, Glycine, Serine, Threonine, Tryptophan, can undergo glucose formation by Pyruvate 

b. Arginine, Glutamate, Glutamine, Histidine, Proline can undergo glucose formation by α-Ketoglutarate

c. Isoleucine*, Methionine, Threonine, Valine can undergo glucose formation by Succinyl-CoA

d. Asparagine, Aspartate can undergo glucose formation by Oxaloacetate

Choose which of the following is correct

TLS Online TPP Program

#Question id: 27960

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following phenomenon is directly related to repair  

TLS Online TPP Program

#Question id: 27961

#Unit 1. Molecules and their Interaction Relevant to Biology

Conversion of Glucose 6-phosphate →  Ribulose 5-phosphate in oxidative phase involves

(a) 2NADP

(b) Removal of 1 CO2

(c) Uses G6PD as enzyme 

(d) No 2NADP is required

TLS Online TPP Program

#Question id: 27962

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of following is true regarding the Transketolase and Transaldolase

a. Transketolase catalyzes the transfer of a two-carbon fragment from a ketose donor to an aldose acceptor with TPP

b. Transketolase catalyzes the transfer of a three-carbon fragment from a ketose donor to an aldose acceptor with TPP

c. Transaldolase catalyses the transfer of a two-carbon fragment

d. Transaldolase catalyses the transfer of a three-carbon fragment