Practice Questions

TLS Online TPP Program

#Question id: 24281

Which of the following statement describes inside-out signaling?

#Unit 4. Cell Communication and Cell Signaling

Binding of integrins to their ligands induces conformational changes in their cytoplasmic domains, directly or indirectly altering their interactions with cytoplasmic proteins
Binding of integrins to their ligands induces conformational changes in their transmembrane domains, directly or indirectly altering their interactions with cytoplasmic proteins
Binding of cytoskeletal proteins intracellularly induces conformational changes in extracellular domains of integrins, so it unable to bind to the ligands
intracellular signaling pathways can, via adapter proteins, modify the ability of integrins to bind to their extracellular ligands

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TLS Online TPP Program

#Question id: 27630

#Unit 1. Molecules and their Interaction Relevant to Biology

α helices are common components of polypeptide chains, they need to be of a certain minimum length of then which of the following graph is correctly representing that certain minimum length condition

TLS Online TPP Program

#Question id: 27631

#Unit 1. Molecules and their Interaction Relevant to Biology

Interactions between amino acid residues at the ends of the helical segment and the electric dipole inherent to the helix so which of the following representing the actual dipole moment along the peptide bond atoms C=O– N-H

TLS Online TPP Program

#Question id: 27632

#Unit 1. Molecules and their Interaction Relevant to Biology

The two forms of poly(Pro) helix all cis (I) or all trans (II) peptide bonds with different no of amino acid per turn

(a) poly(Pro) I as a right-handed helix with 3.3 residues per turn

(b) poly(Pro) I as a right-handed helix with 3 residues per turn

(d) poly(Pro) II is a left-handed helix with 3.3 residues per turn.

Choose the correct options of the following

TLS Online TPP Program

#Question id: 27633

#Unit 1. Molecules and their Interaction Relevant to Biology

Amino acid and condtion/propensity of forming helix is given