The difference between deoxyribose and ribose is that ribose
(a) is a six-carbon sugar and deoxyribose has only five carbons.
(b) bonds only to thymine, not uracil.
(c) has one more oxygen atom than deoxyribose has.
(d) is all of the above.
(c) has one more oxygen atom than deoxyribose has.
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What will be an ideal response?
What percent of our DNA actually codes for
protein products?
a. 3 b. 26 c. 48 d. 71 e. 100
Which of the following is an example of adaptation, one of the characteristics of life?
A. The evolutionary changes that occur to a species B. Sexual reproduction C. Organismal organization D. Metabolism
Your friend has just returned from a deep-sea mission and claims to have found a new single-celled life-form. He believes this new life-form may not have descended from the common ancestor that all types of life on Earth share
You are convinced that he must be wrong, and you manage to extract DNA from the cells he has discovered. He says that the mere presence of DNA is not enough to prove the point: his cells might have adopted DNA as a useful molecule quite independently of all other known life-forms. What could you do to provide additional evidence to support your argument?