TLS Online TPP Program

#Question id: 292


Which of the following types of non-covalent bonds or interactions is responsible for forming the α helix and β sheet secondary structural motifs of a protein:

#SCPH05 I Biotechnology
  1. Ionic bonds between polar charged amino acid R groups

  2. Hydrogen bonds between electronegative atoms of polar uncharged amino acid R groups

  3. Hydrogen bonds between electronegative atoms of the peptide bond

  4. Hydrophobic Interactions between atoms of the peptide bond

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TLS Online TPP Program

#Question id: 2085

#SCPH05 I Biotechnology

Cholesterol mixes with phospholipids in a biomembrane because cholesterol molecules are

TLS Online TPP Program

#Question id: 1561

#SCPH01 Biochemistry

The cells and signaling molecules involved in the initial stages of the inflammatory response are ?

TLS Online TPP Program

#Question id: 10354

#SCPH06 I Botany

One of the enzyme that are involve in the ammonium assimilation is Asparagine synthetase (AS), some statements given below about AS such as,

a) This enzyme that catalyzes this reaction, is found in the cytosol of leaves and roots and in nitrogen-fixing nodules

b) High levels of light and carbohydrate inhibit the expression of genes coding for AS and the activity of the enzyme

c) Conditions of ample energy stimulate AS, thus they favor nitrogen assimilation into glutamine and glutamate

d) Energy-limited conditions inhibit GS and GOGAT, stimulate AS, and thus favor nitrogen assimilation into asparagine, a compound that is rich in nitrogen and sufficiently stable for long-distance transport or long term storage

Which of the following statements about AS is correct?

TLS Online TPP Program

#Question id: 10759

#I Life Science/ Life Sciences Group – I-V

many secondary metabolites have been suggested to have important ecological functions in plants:

a) they protect plants against being eaten by herbivores (herbivory)

b) they protect plants against being infected by microbial pathogens

c) they serve as attractants for pollinators and seed dispersing animals

d) they serve as agents of plant–plant competition

Which of the following combination from above statements is correct?

TLS Online TPP Program

#Question id: 3016

#I Life Science/ Life Sciences Group – I-V

Prokaryotic cells divide by a process known as