The Institutional Review Board (IRB) oversees the use of human participants in research. The IRB must have at least five members and a range of diversity, including race, gender, and cultural backgrounds, a broad set of experiences, and sensitivity to such issues as community attitudes. A. TrueB. False

A. True

Explanation:

The Institutional Review Board (IRB) refers to an officially formed entity under FDA regulations that have been specifically appointed to review and track biomedical research concerning human subjects. In order to comply with the FDA Regulations, the IRB has the power to enact, request amendments or disapprove of research.  It should have at least 5 members with a diverse background including concern of gender, race,  cultural background, and responsiveness to matters such as community attitudes, in order to facilitate a comprehensive and appropriate review of the research operations routinely carried out by the organization.

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question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals