Biology (Mader), 10th Edition

Objective: Identify in concept how scientists are utilizing plants ability to turn sunlight into energy in creating a tiny, spinach-powered battery that could one day be used to power small electrical devices.

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1.		In what organism have researchers studied the Klotho gene?
			A)	Dogs
			B)	Monkeys
			C)	Rabbits
			D)	Mice
2.		What is currently thought to be the role of the Klotho gene?
			A)	Serves as a hormone that helps to prevent oxidative damage in cells
			B)	Triggers the production of glucose
			C)	Helps the mice metabolize sugar more effectively
			D)	Minimizes stress levels in the mice
3.		Which of the following is NOT a likely source of oxidative stress?
			A)	Pesticides
			B)	Well balanced diet
			C)	Exposure to bacteria
			D)	Free radicals
4.		In the study done on two mice groups, those genetically engineered to produce more Klotho gene product were found to:
			A)	have higher levels of free radicals circulating in the blood stream
			B)	have higher levels of enzyme to repair damaged DNA
			C)	have lower levels of DNA found in the blood and urine
			D)	two of the above were found to be true
			E)	all of the above were found to be true
5.		The Klotho gene appears to have anti-aging value, but one of its downsides is that it:
			A)	causes hyperactivity
			B)	damages the neurons of the central nervous system
			C)	is associated with mice having fewer numbers of offspring and processing insulin poorly.
			D)	causes damage to the retina.