Cell cycle is regulated by master regulators (cyclin and CDKs). In vertebrates, G1 CDK activity rises during G1 and is stimulated by the presence of growth factors. When signaling from growth factors is sustained, the resulting cyclin D–CDK4/6 complexes begin phosphorylating Rb, releasing some E2F, which stimulates transcription of the genes encoding cyclin E, CDK2, and E2F itself. In a particular cell type there is a mutation in Rb such that it cannot be phosphorylated. What will be the correct expression pattern of cyclin E in these cells after mitotic stimulation?

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#Question id: 2714

#SCPH05 I Biotechnology

HAT enzymes react with the side-chain of lysine to form the following structure. What effect will the HAT enzymes have on histones?

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#Question id: 4133

#SCPH05 I Biotechnology

Which of the following statements about aminoacyl-tRNA synthetases is false?

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#Question id: 19352

#SCPH06 I Botany

Reporter genes have been extensively used to assay the function of promoters and other regulatory sequences, and also to demonstrate the 

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#Question id: 10977

#SCPH28 | Zoology

A 60-year-old man’s EKG shows that he has an R-R interval of 0.55 sec. Which of the following best explains his condition?

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#Question id: 2324

#SCPH06 I Botany

Bacterial DNA is located in: