The DNA binding motif for many prokaryotic regulatory proteins, such as the lac repressor, is:

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#Question id: 15982

#Unit 12. Applied Biology

Which one of the following technique is used for inserting a foreign gene into a cell?

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#Question id: 12992

#Unit 1. Molecules and their Interaction Relevant to Biology

α-helix changes its configurations according to the environment then

a. membrane encompassing α-helix have nonpolar residue oriented toward the membrane lipid.

b. if α-helix is found in plasm then polar residue will be oriented toward the outside.

c. if α-helix is found in plasm then nonpolar residue will be present inside the core.

d.  membrane encompassing α-helix have polar residue oriented towards the membrane lipid.

Choose incorrect statement

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#Question id: 12573

#Unit 10. Ecological Principles

Which of the following conditions is the most likely indicator of a population in an extinction vortex? 

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#Question id: 438

#Unit 1. Molecules and their Interaction Relevant to Biology

A reaction that best serves as a control point for regulation ________.

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#Question id: 10237

#Unit 10. Ecological Principles

Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?