If you had a friend with a peptic ulcer, would you recommend that he or she take aspirin for the pain? Why or why not?
What will be an ideal response?
No. Aspirin blocks the production of prostaglandins, a type of chemical that helps protect the digestive system's lining from acid attack. Without the prostaglandins, the lining of the stomach would be even more susceptible to damage.
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Sugar is used in the making of fermented sausages to
A. help preserve the sausage. B. provide raw material for the fermentation process. C. sweeten the taste. D. counteract the action of the salt in the sausage.
Members of the subphylum ____ were among the first animals to colonize terrestrial habitats and are
mostly insects.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
Each amino acid is encoded by only one mRNA codon
a. True b. False
Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter. Propose a chemical basis for this change from a liquid to a solid.
A. Hydrogenation of fats changes them from unsaturated to saturated, which are more solid. B. Trans-fatty acid are changed from saturated to unsaturated, allowing them to solidify. C. Trans-fatty acids are changed from unsaturated to saturated, allowing them to solidify. D. Hydrogenation of fats changes them from saturated to unsaturated, which are more solid.