At a fraternity party a 17-year-old male places a paper bag over his mouth and breathes in and out of the bag. As he continues to breathe into this bag, his rate of breathing continues to increase. Which of the following is responsible for the increased ventilation?

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#Question id: 19231

#Unit 12. Applied Biology

Microprojectile bombardments can be used to introduce foreign DNA into plant 

1. Cell suspensions

2. Callus cultures

3. Meristematic tissues

Which of the following above statements are correct?

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#Question id: 10765

#Unit 8. Inheritance Biology

Degree of freedom is (where n is phenotype)

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#Question id: 12372

#Unit 10. Ecological Principles

In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a  single species dominated the field. A possible factor in this secondary succession was

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#Question id: 19881

#Unit 13. Methods in Biology

The DNA moleclule to which the gene of insert is integrated for cloning is called

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#Question id: 15265

#Unit 2. Cellular Organization

The growth of microorganisms in a food product is influenced by the availability of