Gastrin causes Group of answer choices increases in the secretion of chief cells and parietal cells. the conversion of pepsin into pepsinogen. the upper esophageal sphincter to open. the pyloric sphincter to alternately open and close. inhibition of HCl secretion.

When species lose their habitats they may..

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.