Human genes/proteins that regulate the cell cycle are most easily isolated by:

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#Question id: 1395

#SCPH05 I Biotechnology

Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFβ?

a. overexpression of Smad2               

b. loss of Smad 4

c. overexpression of TGFβ receptor I

d. loss of TGFβ receptor II

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#Question id: 3436

#SCPH06 I Botany

Loss of responsiveness to stimuli that convey little or no new information is called

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#Question id: 15238

#SCPH01 Biochemistry

Electrophoretic resolution can be mainly changed by adjusting the

a) current 

b) pH of buffer system

c) luminous intensity 

d) Gel concentration

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#Question id: 13038

#SCPH01 Biochemistry

Please arrange the following steps about ELIZA (Enzyme-linked immunosorbent assay) in chronological order

i. incubate with antibody-enzyme complex that binds primary antibody

ii. coat surface with antigen, block unoccupied sites with nonspecific protein

iii. add substrate, formation of colored product indicates presence of specific antigen

iv. incubate with primary antibody against specific antigen

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#Question id: 4952

#SCPH06 I Botany

Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth. Which of these questions is currently the most problematic and would have the greatest impact on our understanding if we were able to answer it?