The process by which a molecule gives up a functional group, and a different molecule immediately
accepts it, is
a. condensation.
b. cleavage.
c. functional group transfer.
d. electron transfer.
e. rearrangement.
C
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Many people at a wedding ceremony represent which level of organization?
A. cell B. organ C. organism D. population E. ecosystem
The RNA molecules of an RNA world on early Earth may have been composed of bases other than A, U, G, and C
because ____.
a. DNA does not use all four bases b. these nucleotides will not form a double helix c. these nucleotides cannot be created in a Miller-Urey like experiment d. G is somewhat unstable in water e. C is somewhat unstable in water
Echinoderms often have an important ecological effect on their environment. Provide at least 2 examples of their effects in particular locations
What will be an ideal response?
Steve decides to make a meal for some of his friends. He uses a variety of foods to prepare the meal, including some canned mushrooms. Unfortunately, he gives his friends a mild case of botulism food poisoning
His friends report blurred vision and trouble speaking due to a flaccid paralysis of the muscle cells by the botulinum toxin. Propose a mechanism by which this toxin would inhibit muscle contraction.