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: 20259

#Unit 12. Applied Biology

Under stress condition expression of E, coli gene mtl 1D in plants leads to 

1. Mannitol accumulation 

2. Enhanced growth 

3. Reduced growth

4. Glucose accumulation 

Which of the following is correct option?

TLS Online TPP Program

#Question id: 20260

#Unit 12. Applied Biology

The modified forms of starch have varied applications in food and other industries. Basic strategies to modify starch quality are 

(i) genetic modification of crops (by breeding or biotechnology)

(ii) food processing (using enzymes and chemicals)

(iii) food supplementation (modification of starch by employing microorganisms)

Which of the following strategies are correct?

TLS Online TPP Program

#Question id: 20261

#Unit 12. Applied Biology

Certain modified forms of starch such as high amylose starch are widely used in 

1. Snack products

2. Improve uniformity, stability and texture

3. Thickener

Which of the following are correct?

TLS Online TPP Program

#Question id: 20262

#Unit 12. Applied Biology

Certain modified forms of starch such as high amylopectin starch are widely used in 

1. Snack products

2. Improve uniformity, stability and texture

3. Thickener

4. Paper industry

Which of the following is correct option?

TLS Online TPP Program

#Question id: 20263

#Unit 12. Applied Biology

_______  an excellent alternative to polystyrene-based packing material

TLS Online TPP Program

#Question id: 20264

#Unit 12. Applied Biology

______________ is the main enzyme of amylose biosynthesis. Whose increased activity is expected to increase the amylose content of starch?