How many precursors are involved in synthesis of amino acids

TLS Online TPP Program

#Question id: 27086

#Unit 1. Molecules and their Interaction Relevant to Biology

The number of atoms held into a geometric plane by a peptide bond is

TLS Online TPP Program

#Question id: 2715

#Unit 2. Cellular Organization

The interaction between the positively charged amino terminus of histone __________ and a negatively charged region of the histone fold domain of histone __________ is particularly important for 30 nm fibre formation.

TLS Online TPP Program

#Question id: 2918

#Unit 2. Cellular Organization

Some DNA sequences in our cells have high frequencies of methylated cytosines (hypermethylation); some others have a low frequency of methylated cytosines (hypomethylation). Which of the two methylation states best describes the kind of sequences listed below? 

 I. Satellite DNA in pericentromeric heterochromatin

II. Promoters 

III. Dispersed transposon repeats

IV. CpG islands 

V. Enhancers

TLS Online TPP Program

#Question id: 12580

#Unit 10. Ecological Principles

When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because

TLS Online TPP Program

#Question id: 22973

#Unit 7. System Physiology – Animal

Which enzyme converts 25-hydroxycholecalciferol to the active form, 1,25-dihydroxycholecalciferol.