Biology (Mader), 10th Edition

Objective: The student will learn about microorganisms living in the human body, investigate the biological basis of how they may contribute to the development of obesity and understand how future research into microbial bioinformatics may lead to potential obesity treatments.

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1.		The number of bacteria living in our intestines:
			A)	is equal to the number of our own cells
			B)	is 10 times less than the number of our own cells
			C)	is 10 times greater than the number of our own cells
			D)	is 100 times greater than the number of our own cells
2.		Based upon their studies, the scientists found that:
			A)	a group of bacteria called Firmicutes is more abundant in lean mice
			B)	a group of bacteria called Bacteriodetes is more abundant in lean mice
			C)	a group of bacteria called Firmicutes appears to be more abundant in healthy weight humans
			D)	all of the above
3.		In their studies, the scientists found that:
			A)	feeding germ-free mice lacking microbes in their intestines a high fat diet led to obesity
			B)	feeding germ-free mice lacking microbes in their intestines a high sugar diet let to obesity
			C)	a and b
			D)	none of the above
4.		Based upon their research, the scientists discovered that:
			A)	the bacterial communities in obese mice had more active genes involving complex sugar metabolism
			B)	the bacterial communities in obese mice appear to put fat into fat cells more efficiently
			C)	when humans lost weight, their Firmicute population increased
			D)	a and b
5.		Based upon their research, the scientists believe that:
			A)	chemicals made by intestinal bacteria may be therapeutic for obesity in the future
			B)	microbial genes may interact with human genes in the development of obesity
			C)	apparent "friendly" microorganisms living in our body may impact other human diseases
			D)	all of the above