You are a part of the first scientific team to land on Mars. What steps would you take to determine whether there is any life there? If you found something, how would you know whether it is a living thing?
What will be an ideal response?
First, you would explore the landscape to discover anything that appeared to be alive. Then, using the scientific method to devise controlled experiments, as well as calling on your knowledge and definition of life on Earth, you would determine whether the things you have discovered are alive.
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The ENCODE project examined
A) the chicken genome, to learn more about dinosaurs, whose DNA was not preserved. B) the part of the human genome sequence that does not encode protein. C) the genes that account for our anatomy and physiology. D) a representative 1 percent of the human genome.
Which of the following designates a human female with Turner’s Syndrome?
a. XXY b. XY c. XX d. XYY e. XO
Energy ____ in an ecosystem and nutrients ____.
A. is cycled continuously; flow one way B. flows in all directions; flow one way C. flows two ways; flow one way D. is cycled continuously; are cycled continuously E. flows one way; are cycled continuously
Enzymes catalyze chemical reactions by which of the following?
a. lowering the energy of the activation in the reaction b. raising the energy of activation in the reaction c. increasing entropy d. increasing the free energy of the products