Following statements are regarding to enzymatic processing of benzo(a)pyrene to a more potent mutagen and carcinogen.

A. Liver enzymes, particularly P-450 enzymes, modify benzo(a)pyrene in a series of reactions, producing 7,8-diol-9,10-epoxide, a highly potent mutagenic species that reacts with DNA primarily at the N2 atom of a guanine base.

B. The adduct, (+)-trans-anti-B(a)P-N2-dG, causes polymerase to insert an A rather than a C opposite the modified G base. Next time the DNA is replicated, a T will be inserted opposite the A, and the mutation will be complete.

C. Potent mutagen majorly causes conversion of guanine (G) to thymine (T) bases, a transition mutation.

D. When this potent mutagen applied to cultured bronchial epithelial cells, activated benzo(a)pyrene induces many mutations, including activating mutations at codons 175, 248, and 273 of the p53 gene.

Which of the following statements are correct?

TLS Online TPP Program

#Question id: 28087

#Unit 6. System Physiology – Plant

How many ATP will be formed in stroma by 2 molecule of water

TLS Online TPP Program

#Question id: 28088

#Unit 6. System Physiology – Plant

Different subunit of ATP Synthase are derived from different location of gene

a. αβε genes are located in chloroplast

b. αβε genes are located in nucleus 

c. γδ genes are located in chloroplast

d. γδ genes are located in nucleus

Which of the following is incorrect

TLS Online TPP Program

#Question id: 28089

#Unit 6. System Physiology – Plant

The following statement is related to the phenomenon of Cyclic electron transport   

(a) Produces only ATP as a product without net production of NADPH

(b) Produces only NADPH as a product without net production of ATP 

(c) This phenomenon is done by NDH and PGRL dependent mechanism

(d) This phenomenon is done by NDH and PGRL independent mechanism

Which of the following is correct

TLS Online TPP Program

#Question id: 28090

#Unit 6. System Physiology – Plant

The NDH pathway is especially prominent during oxidative stress.  The second pathway involves a ferredoxin‐quinone oxidoreductase that is sensitive to

TLS Online TPP Program

#Question id: 28091

#Unit 6. System Physiology – Plant

Inhibitory agents are given along with their inhibitory system/process 

(a) DCMU -  an inhibitor of PS I 

(b) DCMU -  an inhibitor of PSII 

(c) DBMIB -  an inhibitor of the Cyt b6 f complex

(d) Paraquat -  an inhibitor of PSI

(e) Paraquat -  an inhibitor of PSII

Which of the following is correctly matched

TLS Online TPP Program

#Question id: 28092

#Unit 6. System Physiology – Plant

Component along with their thylakoids percentage in appressed and stroma exposed are given

Match them correctly