TLS Online TPP Program

#Question id: 945


A key precursor in the synthesis of aromatic amino acids (tryptophan, tyrosine and phenylalanine) is ________.

#1. Molecules and their Interaction Relevant to Biology
  1. prephenate

  2. chorismate

  3. 4-hydroxyphenylpyruvate 

  4. indole

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TLS Online TPP Program

#Question id: 10355

#6. System Physiology – Plant

The conversion of ammonium to amino acids requires two enzymes such as GS and GOGAT,

a) High levels of light and carbohydrate—conditions that stimulate plastid GS and Fd-GOGAT

b) Conditions of ample energy inhibit GS and GOGAT

c) The stimulation of GS and GOGAT, they favor nitrogen assimilation into glutamine and glutamate, compounds that are rich in carbon and participate in the synthesis of new plant materials

d) In energy-limited conditions inhibit GS and GOGAT

Which of the following statements about GS and GOGAT is correct?

TLS Online TPP Program

#Question id: 10357

#6. System Physiology – Plant

Why the glutamine and glutamate will not be transported while  asparagine will prefer to be transported?

TLS Online TPP Program

#Question id: 10358

#6. System Physiology – Plant

Which of the following essential micronutrients is associated with nitrate reductase enzyme found in higher plants?

TLS Online TPP Program

#Question id: 10359

#6. System Physiology – Plant

Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;

TLS Online TPP Program

#Question id: 10360

#6. System Physiology – Plant

How much ATP require in the nitrogen fixation or conversion of ammonium assimilation in the system?

TLS Online TPP Program

#Question id: 10362

#6. System Physiology – Plant

Bacteria can convert atmospheric nitrogen into ammonia, Several form symbiotic associations with higher plants is given below;

               HOST PLANT                                                                          N-FIXING SYMBIONTS

A) Gunnera                                                                            i) Frankia

      B) Azolla                                                                                ii) Acetobacter

C) Leguminous                                                                     iii) Azospirillum

             D) Actinorhizal                                                                      iv) Nostoc

             E) Sugarcane                                                                         v) Anabaena

             F) Miscanthus                                                                       vi) Sinorhizobium


Which of the following combination with the host plants and n-fixing symbionts is CORRECT?