Molds and yeasts belong to which kingdom?
A. Fungi
B. Protista
C. Bacteria
D. Archaea
E. Animalia
Answer: A
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Purine bases, such as adenine and guanine, have ________ joined ring(s) for their structure, compared to pyrimidine bases, such as cytosine and thymine, that have ________ ring(s) in their structure.
Fill in the blank(s) with the appropriate word(s).
The discovery of ____ suggested that nucleic acids likely existed prior to proteins
a. RNA b. ribozymes c. RNA polymerase d. peptide bonds e. endoplasmic reticulum
You and your friend are on vacation at Yellowstone Park. The plaque in front of a sulfur hot spring reads: “This sulfur spring is 80°C, has a pH of 2, and contains large amounts of sulfur which is oxidized by Sulfolobus species of archaea.” Your friend is excited. “Boy, if those microbes are that tough they should be easy to grow in the lab. I think I’ll work with those for my summer project.” What do you think?
A. You agree, and decide to partner with your friend to work on this organism as well. B. A species adapted to such extreme conditions would probably not be easy to culture in the very different conditions of a lab. C. The sulfur spring is pretty extreme, but after a few days the individual archaea should have adapted to lab culture conditions. D. The sulfur spring is pretty extreme, but after a few generations the species should have adapted to the lab culture conditions. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about replicating the environmental conditions of hot springs in the lab? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Three of the four modes of inheritance of organelle genes are • maternal inheritance as in mammals, • paternal inheritance as in gymnosperms, and • selective degradation of one source during mating. What is the fourth?
What will be an ideal response?