The tendency of nonpolar molecules to self‐associate in water rather than to dissolve individually is called

TLS Online TPP Program

#Question id: 2636

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site

TLS Online TPP Program

#Question id: 18219

#Unit 1. Molecules and their Interaction Relevant to Biology

Pseudoknot loop refers to 

TLS Online TPP Program

#Question id: 27628

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement of the following

TLS Online TPP Program

#Question id: 12183

#Unit 1. Molecules and their Interaction Relevant to Biology

Following statements are regarding to regulation of S phase and mitotic cyclin levels in budding yeast.

A. In late anaphase, the anaphase-promoting complex (APC/C) ubiquitinylates S phase and mitotic cyclins.

B. In late anaphase, the anaphase-promoting complex (APC/C) phosphorylates S phase and mitotic cyclins.

C. During exit from mitosis and G1, Cdh1 is dephosphorylated and active; during S phase and mitosis, Cdh1 is phosphorylated and dissociates from APC/C, and APC/C becomes inactive.

D. During exit from mitosis and G1, Cdh1 is phosphorylated and active; during S phase and mitosis, Cdh1 is dephosphorylated and dissociates from APC/C, and APC/C becomes inactive.

E. The G1/S phase CDKs, which themselves are not APC/CCdh1 substrates, phosphorylate Cdh1 at the G1–S phase transition.

F. The G1/S phase CDKs, which themselves are not APC/CCdh1 substrates, ubiquitinylates Cdh1 at the G1–S phase transition.

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 28151

#Unit 1. Molecules and their Interaction Relevant to Biology

Technique based on atomic properties is NMR, NMR Provides Information on an

TLS Online TPP Program

#Question id: 28152

#Unit 1. Molecules and their Interaction Relevant to Biology

Q. NMR signals arise from some properties of atomic nuclei, which are

A. Magnetic moment

B. Angular momentum of the nuclear spin

C. Electronic range

D. Resistivity

Which of the following is true