Which of the following is a non-protein carrier found in some electron transport chains?
A) flavoproteins
B) metal-containing proteins
C) ribozymes
D) cytochromes
E) ubiquinones
E
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Lipids that form membranes have what kind of structure?
A) completely nonpolar, because they are lipids B) completely polar, which allows them to dissolve in water C) polar heads and nonpolar tails; the nonpolar tails interact with water D) polar heads and nonpolar tails; the polar heads interact with water
Why has the development of iPS cells been viewed as a major breakthrough in the development of stem cell therapies? Select all correct choices
A. It allows us to develop pluripotent stem cells without the ethical issues involved in obtaining them from human embryos. B. It may ultimately allow us to obtain stem cells from any individual - we can match the patient to the tissue. C. It is easy and inexpensive. D. It is a proven technique that we will be able to move into clinical trial very quickly. E. It will allow us to "grow" new organs very quickly.
In which category would you place soil quality?
a. ecosystem goods b. ecosystem processes c. ecosystem services d. none of these
Assuming no chromosomal aneuploidies, a calico cat would be which gender?
A. male B. female C. cannot be determined