In immunofluorescence studies you always see the small G-protein Ras in a specific region of the cell and, given its protein sequence along with many other proteins localized to this area, you hypothesize that their C-terminal Cys-Ala-Ala-X (X can be any amino acid) motifs may be responsible for targeting these proteins to this subcellular region. To test this hypothesis, you genetically engineer the sequence encoding this motif onto a cDNA encoding green fluorescent protein. When immunofluorescence is used, where specifically would you expect to see GFP localized in the cell?

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#Question id: 4872

#Unit 8. Inheritance Biology

F1 heterozygous females are test-crossed with males and produced 1800 progeny The interference between these genes is 0.4. What number is of observe double cross over? 

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#Question id: 31346

#Unit 13. Methods in Biology

Which one of the following techniques is used for detection of phosphorylated protein?

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#Question id: 12306

#Unit 7. System Physiology – Animal

 Which of the following is true of the tubular fluid that passes through the lumen of the early distal tubule in the region of the macula densa?

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#Question id: 9204

#Unit 9. Diversity of Life Forms

Which of the following observations provides the best evidence of a biodiversity crisis?

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#Question id: 11148

#Unit 7. System Physiology – Animal

Which of the following ions is most likely to cross the plasma membrane of a resting neuron?