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1. Describe the functional requirements of an antiporter transport protein (i.e., what properties must the protein have to operate effectively?). Do antiporters represent an example of passive or active transport? Why?2. With reference to aquaporins or the bacterial K+ channel, describe how ion channels can ensure ion specificity while maintaining relatively high flow rates?3.K+ leak channels play an important role in re-establishing membrane potential across cell membranes. Since these channels are always open, how can the [K+] inside the cell be nearly 30X higher than the extracellular concentration at the K+ equilibrium point?
A cross between two pink snapdragon plants produces 46 Red snapdragons, 115 pink snapdragons, and 42 white snapdragons.
What will the results be for each plant if light only in the 650 nm range is supplied? 500 nm range? 450 nm range? Put in plain words.What colour is each plant? Give details.
If a replication error that creates an A-G mismatch is not repaired before the next round of replication, what will be the sequences of the 2 daughter DNAs after replication.
Which of the following best describes the biological role of the lac operon?
The American Chestnut Tree, which once made up more than 25 percent of North American hardwoodforests, were killed off by a deadly fungal blight that does not affect the closely related AsianChestnut Tree.
If amino acid sequences might be useful in determining how closely related dissimilar species are but may not be very useful for identifying a particular species, suggest two reasons why.
Circle DNA or RNA
your friend discovered a new multicellular organism living under the polar ice caps and brought it back to the
What is tuberculosis? How is the disease transmitted? Is there treatment for tuberculosis.
please respond thoughtfully and in your own words to the following questions. be sure to back up statements of fact
Microtubules can be formed in vitro from tubulin that is bound to GTP analogues that (unlike GTP) cannot be hydrolyzed. What properties would you expect these microtubules to possess?
Why is it necessary to have a different mechanism for sexual reproduction, and how does the process of meiosis fulfill this purpose? What do you think are the advantages of this mechanism?
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