Eukaryotic mitochondria have their own 70S ribosomes and circular DNA.
Answer the following statement true (T) or false (F)
True
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Which of the following are considered to be fossils?
A) Footprints or other impressions preserved in stone B) Mineralized bones C) Animals frozen in ice or preserved in amber D) All of these
The functional relationship between glial cells and neurons is analogous to the functional relationship between what cell types in plants?
A. cork cambium cells and primary meristem B. tracheids and vessel elements. C. parenchyma and schlerenchyma D. companion cells and sieve tube elements E. epidermal cells and ground tissue cells
Imagine an earthworm that has no chaetae. How would the lack of chaetae affect movement of the earthworm?
A. The earthworm would have difficulty changing locations, since it cannot anchor itself in the soil. B. The earthworm would be much flatter than normal since it has no hydrostatic skeleton. C. The earthworm would only be able to extend its body segments. D. The earthworm would only be able to shorten its body segments. E. The earthworm would not be able to move at all. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the function of chaetae? 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? Reflect 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?
The rate and depth of normal breathing are determined by
A) oxygen levels in the blood. B) carbon dioxide levels in the blood. C) a pacemaker in the diaphragm. D) a pacemaker in the intercostal muscles. E) carbon monoxide levels in the blood.