Which of the following gases is unsuitable for use as a GC carrier gas?

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#Question id: 18596

#Unit 11. Evolution and Behavior

First toothed birds appear in which geological time periods?

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#Question id: 18995

#Unit 13. Methods in Biology

Which of the following is not a characteristic of the syringe pump used in high pressure liquid chromatography?

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#Question id: 29012

#Unit 7. System Physiology – Animal

Active transport of Ca2+ and PO43– is increased by a metabolite of vitamin D from__

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#Question id: 31102

#Unit 2. Cellular Organization

Which of the following statements are correct regarding the actin polymerization?

a) the concentration of G-actin is above the Cc, the filament end will grow

b) the concentration of G-actin is below the Cc, the filament end will grow

c) (+) end of microfilament polymerization is much faster than the (-) end

d) D form that adds to the filament and the T form that leaves

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#Question id: 3859

#Unit 3. Fundamental Processes

Polyadenylation is: