How are leptin and insulin distributed throughout the arcuate nucleus of the hypothalamus?
What will be an ideal response?
They are located in two classes: neutrons that release neuropeptide Y, and neutrons that release melanocortins.
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A flat expanse of an ocean basin is called:
a. a seamount. b. an abyssal plain. c. an abyssal hills. d. an abyssal prairie. e. an underwater delta.
DNA differs from RNA in every way but which of the following?
a. DNA contains deoxyribose sugars. b. DNA is usually a double-stranded molecule. c. DNA contains thymidine as one of its bases. d. DNA can form hydrogen bonds with complementary sequences.
The effect of a competitive inhibitor can be reversed by ____.
a) increasing inhibitor concentration b) heating the reaction mixture c) changing the pH d) massaging the enzyme e) increasing substrate concentration
When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed that demonstrated that RNAase failed to prevent transformation of the R strain to S strain. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support or provide information to reject any of these hypotheses.