Some given statements about ethylene signalling pathways are listed;

a) Ethylene receptors are interact with two downstream signaling proteins, CTR1 (CONSTITUTIVE TRIPLE RESPONSE1) and EIN3 (ETHYLENE-INSENSITIVE3)

b) CTR1 is a soluble serine/threonine kinase that is associated with ethylene receptors, while EIN2 is an ER transmembrane protein with a cytosolic C-terminal domain that is a target for CTR1 kinase activity

c) EIN2 is required to stabilize transcription factors of the EIN3 (ETHYLENEINSENSITIVE3) family, which activate the transcription of ethylene-responsive genes

d) EIN3 is required to stabilize transcription factors of the EIN2 (ETHYLENEINSENSITIVE2) family, which activate the transcription of ethylene-responsive genes

Which of the following is the correct statements  of auxin signalling pathway ?

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#Question id: 170

#Unit 1. Molecules and their Interaction Relevant to Biology

Desmosine, an uncommon amino acid is derived from

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#Question id: 171

#Unit 1. Molecules and their Interaction Relevant to Biology

An amino acid with two chiral carbon atoms

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#Question id: 172

#Unit 1. Molecules and their Interaction Relevant to Biology

Which amino acid is least likely to participate in acid-base catalysis?

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#Question id: 173

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the net charge on the tripeptide Gly-Arg-Lys at pH 7? The table below gives the pKaʹs of the ionizable groups on the free amino acids.

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#Question id: 174

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the net charge on the dipeptide Arg-Pro at pH 9.0? The table below gives the pKaʹs of the ionizable groups on the free amino acids.

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#Question id: 175

#Unit 1. Molecules and their Interaction Relevant to Biology

The ionic charges associated with a protein molecule are ________.