Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?

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#Question id: 12057

#Unit 7. System Physiology – Animal

A tsunami tidal wave hits the east coast of South America and the people living there are forced to drink unclean water. Within the next several days, a large number of people develop severe diarrhea and about half of these people expire. Samples of drinking water are positive for Vibrio cholerae. Which of the following types of ion channels is most likely to be irreversibly opened in the epithelial cells of the crypts of Lieberkühn in these people with severe diarrhea?

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#Question id: 17998

#Unit 13. Methods in Biology

Eukaryotic mRNA species are isolated by using

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#Question id: 23587

#Unit 13. Methods in Biology

Plasmids are usually introduced into bacterial cells by ________.

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#Question id: 7206

#Unit 5. Developmental Biology

Which of the following statements explains the dominant mutation of Pmar1 results in a vegetalized embryo is due to:

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#Question id: 27641

#Unit 1. Molecules and their Interaction Relevant to Biology

An a-helix composed of d-amino acids which is