TLS Online TPP Program

#Question id: 561


Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. a Glu residue on the enzyme is involved in the reaction.

  2. a His residue on the enzyme is involved in the reaction.

  3. the enzyme has a metallic cofactor.

  4. the enzyme is found in gastric secretions

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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?

TLS Online TPP Program

#Question id: 20268

#Unit 7. System Physiology – Animal

Choose correct statements about synthesis and processing of antidiuretic hormone and oxytocin.
a. ADH and oxytocin are homologous nonapeptides (containing nine amino acids).
b. Are synthesized in the supraoptic and paraventricular nuclei of the hypothalamus respectively.
c. The ADH neurons have their cell bodies primarily in the paraventricular nuclei.
d. The oxytocin neurons have their cell bodies primarily in supraoptic nuclei of the hypothalamus.

TLS Online TPP Program

#Question id: 20269

#Unit 1. Molecules and their Interaction Relevant to Biology

The antidiuretic hormone (ADH) originates primarily in the supraoptic nuclei of the hypothalamus, which of the following statement is FALSE regarding ADH?

TLS Online TPP Program

#Question id: 20269

#Unit 7. System Physiology – Animal

The antidiuretic hormone (ADH) originates primarily in the supraoptic nuclei of the hypothalamus, which of the following statement is FALSE regarding ADH?

TLS Online TPP Program

#Question id: 20270

#Unit 7. System Physiology – Animal

Oxytocin is formed primarily in the paraventricular nuclei of the hypothalamus. Which of the following statement is FALSE regarding oxytocin?