Which one of the following mast cell products is NOT preformed and therefore has to be newly synthesized?

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#Question id: 22948

#Unit 5. Developmental Biology

In the floral meristem, the FT-FD complex → SOC1 and AP1 → ____?___ gene expression

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#Question id: 24444

#Unit 13. Methods in Biology

What is the His bundle electrogram (HBE)?

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#Question id: 3688

#Unit 3. Fundamental Processes

Which of the following enzyme has a unique ability to introduce positive and negative supercoiling of the DNA and it is the target for antibacterial agents such as ciprofloxacin/quinolones?

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#Question id: 18662

#Unit 13. Methods in Biology

Which of the following method is particularly useful for separating isoenzymes, which are different forms of the same enzyme, often differing by only one or two amino-acid residues.

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#Question id: 19019

#Unit 9. Diversity of Life Forms

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive to least inclusive). 

1. sporophyte 2. microspores 

3. microsporangia 4. Pollen cone 

5. Pollen nuclei