Which of the following can be identified using a series of promoter linker scanning mutations?

a. areas of the promoter that are non-essential

b. areas of the promoter that are essential

c. the presence of separate transcriptional control regions

d. spacing constraints on separate transcriptional control regions

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#Question id: 6601

#General Aptitude

A	M	B	N
R	C	S	D
E	U	F	?

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#Question id: 737

#Unit 1. Molecules and their Interaction Relevant to Biology

Which structure below indicates the proper hydrogen-bonding pattern between amino acids in an α-helix? (Dashed lines represent the hydrogen bonds.)

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#Question id: 310

#Unit 1. Molecules and their Interaction Relevant to Biology

Ionic bonds easily form when electron when ionization energy of the metallic atom is _____ comparatively.

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#Question id: 10631

#Unit 10. Ecological Principles

To estimate the number of foxes m an area, a researcher conducted a mark-recapture survey. In the fast survey, he caught and marked 90 foxes. In his second survey a week later, he caught 120 foxes of which 40 were marked (recaptures). If you are told that the actual number of foxes in this area is 400, which of the following is a plausible explanation for the anomaly in the researcher's data? 

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#Question id: 24606

#Unit 2. Cellular Organization

What can be the most acceptable length/or most predicted length of