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TLS Online TPP Program

#Question id: 5281

In the mating Hfr Strs met+ his+ leu+ trp+ Ala+   X F- Strres met- his- leu- trp- Ala-. At regular interval time, the mating cells are interrupted and the cell suspensions plated on four different growth media with streptomycin. The amino acids in the growth media and the number of colonies observed on each are as follows:

Interrupted time

Composition of media

Growth

His

Leu

Ala

Trp

Met

2   min

+

-

+

+

+

Yes

10 min

+

-

-

+

+

Yes

12 min

+

-

-

+

-

No

15 min

+

-

-

-

+

Yes

20 min

-

-

-

-

+

Yes

What is the order of transfer of the genes?

#Unit 8. Inheritance Biology

  1. Leu- Ala- His- Met - Trp 

  2. Leu- Trp- His- Met-Ala       

  3. Ala- Trp- His- Met- Leu   

  4. Leu- Ala- Trp- His- Met 

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TLS Online TPP Program

#Question id: 29435

#Unit 6. System Physiology – Plant

Flavonoid's compound release by host plant are given match the following
TLS Online TPP Program

#Question id: 29436

#Unit 6. System Physiology – Plant

Which of the following is incorrectly paired 
a. NodA is an N-acyltransferase
b. NodB is a chitin-oligosaccharide deacetylase
c. NodB is a N-acyltransferase
d. NodC is a chitin-oligosaccharide synthase
f. NodC is a chitin-oligosaccharide deacetylase
TLS Online TPP Program

#Question id: 29437

#Unit 6. System Physiology – Plant

Important chemical reactions involved in Nitrate assimilation at roots are given

a. a & b both is Nitrate reductase 

b. a & b both is NADPH nitrite reductase 

c. a is Nitrate reductase and reaction takes place in plastid 

d. a is Nitrate reductase and b is NADPH nitrite reductase

Choose the correct statement made regarding the above reactions of the following
TLS Online TPP Program

#Question id: 29438

#Unit 6. System Physiology – Plant

Symbiotic nitrogen fixation in legume nodules involves Root hair cellular responses to bacterial Nod factor and this response is time-based phenomenon

Match the Response with their appropriate timing
TLS Online TPP Program

#Question id: 29439

#Unit 6. System Physiology – Plant

Nitrogenase, a complex metal containing enzyme is involved in conversion of N2 to NH3•
a. Nitrogenase is composed of two component proteins
b. Nitrogenase is a complex consisting of the MoFe protein (dinitrogenase or component I) a heterotetramer
c. Nitrogenase is a complex consisting of the MoFe protein (dinitrogenase or component I) a heterotetramer
d. Fe protein (dinitrogenase reductase or component II) a heterodimer

Which of the combination of above statement about Nitrogenase is INCORRECT
TLS Online TPP Program

#Question id: 29440

#Unit 1. Molecules and their Interaction Relevant to Biology

Nitrogenase is a complex consisting of the 
(a) MoFe protein (dinitrogenase or component I) a heterotetramer
(b) the Fe protein (dinitrogenase reductase or component II) a heterotetramer
(c) MoFe protein (dinitrogenase or component I) a homodimer.
(d) the Fe protein (dinitrogenase reductase or component II) a homodimer

Which of the following is correct