Practice Questions

TLS Online TPP Program

#Question id: 5118

Which of the following is not a mechanism by which cells communicate with each other?

#SCPH01 Biochemistry

transcription factors are secreted from one cell and taken up by the target cell, where they influence gene expression
cell surface molecules on adjacent cells interact and initiate a signal transduction process that influences cellular behavior and gene expression
cells form gap junctions with adjacent cells, allowing the passage of small molecules
cells secrete proteins and small hydrophilic molecules, which interact with cell surface receptors on target cells and initiate a signal transduction process that influences cellular behavior and gene expression

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TLS Online TPP Program

#Question id: 15861

#SCPH05 I Biotechnology

which part of the plant tissue will be promoted by Increasing the amount of Auxin in callus culture ?

TLS Online TPP Program

#Question id: 815

#SCPH28 | Zoology

The cis conformation shows Cα atoms are on the same side of the peptide bond, is ∼8 kJ mol−1 less stable than the trans conformation. Why?

TLS Online TPP Program

#Question id: 1685

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

The TCR for antigen is:

TLS Online TPP Program

#Question id: 19850

#SCPH05 I Biotechnology

Out of boiling point (I), entropy (II), pH (III) and e.m.f. of a cell (IV), intensive properties are –

TLS Online TPP Program

#Question id: 358

#SCPH06 I Botany

Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?