TLS Online TPP Program

#Question id: 1989


Which of the following are T cells of the immune system?

#Section 2: General Biology
  1. CD4, CD8, and plasma cells

  2. cytotoxic and helper cells

  3. plasma, antigen-presenting, and memory cells

  4. lymphocytes, macrophages, and dendritic cells

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TLS Online TPP Program

#Question id: 10785

#Section 6: Plant, Animal and Microbial Biotechnology

Plant phenolics compound are biosynthesized from___

TLS Online TPP Program

#Question id: 10786

#Section 6: Plant, Animal and Microbial Biotechnology

Alkaloids are usually synthesized from one of a few common amino acids such as___

TLS Online TPP Program

#Question id: 10787

#Section 6: Plant, Animal and Microbial Biotechnology

Which structure represents cinnamic acid___

TLS Online TPP Program

#Question id: 10788

#Section 6: Plant, Animal and Microbial Biotechnology

Phenyl ammonia lyase (PAL) involved in biosynthesis of phenolic compound in plants. Following are some statements regarding the action of PAL;

a) PAL catalyze conversion of phenyl alanine to p-coumaric acid

b) PAL catalyzes the conversion of phenyl alanine into trans-Cinnamic acid by elimination of an ammonia molecule

c) The activity of PAL is increased by environmental factors, such as low nutrient levels, light, and fungal infection

d) PAL is situated at a branch point between primary and secondary metabolism, so the reaction that it catalyzes is an important regulatory step in the formation of many phenolic compounds

Which of the following combinations of above statement is true?

TLS Online TPP Program

#Question id: 10789

#Section 6: Plant, Animal and Microbial Biotechnology

Trans-cinnamic acid, p-coumaric acid, and their derivatives are simple phenolic compounds known as

TLS Online TPP Program

#Question id: 10790

#Section 6: Plant, Animal and Microbial Biotechnology

chalcone synthase (CHS) involved in biosynthesis of phenolic compound in plants. Following are some statements regarding the action of CHS;

 a) Chalcone synthase catalyzes the conversion of p-Coumaroyl-CoA into Chalcones

 b) Substrate for Chalcone synthase is chalcone

 c) CHS activity increased by environmental factors, such as light, and fungal infection

 d) Chalcone synthase is enzyme in flavonoid biosynthesis catalyzes stepwise condensation into p-Coumaric acid by using Malonyl-CoA molecules

 Which of the following combinations of above statement is true?