A person’s normal tidal volume is 400 ml with a dead space of 100 ml. The respiratory rate is 12 breaths/min. The person is placed on ventilator for surgery and the tidal volume is 700 with a rate of 12. What is the approximate alveolar Pco2 for this person?

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#Question id: 4823

#Unit 8. Inheritance Biology

Which one of the following DNA markers can be used to distinguish between a homozygote and heterozygote ?

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#Question id: 5746

#Unit 8. Inheritance Biology

A base change resulting in a codon specifying an amino acid which is different than in the wild-type polypeptide

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#Question id: 19357

#Unit 13. Methods in Biology

BAC vectors are based on _________ plasmid.

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#Question id: 14959

#Unit 6. System Physiology – Plant

In addition to self assembly, enzymes may facilitate wall assembly. A prime candidate for enzyme-mediated wall assembly is-

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#Question id: 12577

#Unit 10. Ecological Principles

During  a  field  trip,  an  instructor  touched  a  moth  resting  on  a  tree  trunk.  The  moth  raised  its  forewings  to  reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory  receptors  had  fired  and  triggered  a  neuronal  reflex  culminating  in  the  contraction  of  certain  muscles.  A second student responded that the behaviour might frighten predators. Which statement best describes these explanations?