There has been considerable support for the hypothesis that peptides can function as satiety signals, what does the support suggest?
What will be an ideal response?
> several gut peptides have been shown to bind to receptors in the brain, particularly in areas of the hypothalamus involved in energy metabolism, and a dozen or so (e.g. CCK, bombesin, glucagon, alpha-melanocyte-stimulating hormone, and somatostatin) have been reported to reduce food intake
> these have become known as satiety peptides (peptides that decrease appetite)
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Animals with a body cavity located between the mesoderm and endoderm are _____.
Fill in the blank(s) with the appropriate word(s).
The Archaea generally lack which of the following that are normally found in gram-negative bacteria?
A. A complex peptidoglycan network B. Outer membrane C. Lipopolysaccharide D. All of the choices are correct.
As muscles contract, ________
a. actin heads bind to myosin filaments and slide them toward the middle of the sarcomere b. myosin heads bind to actin filaments and slide them toward the middle of the sarcomere c. myosin filaments change position d. filaments change length
This structure gives rise to lateral roots
a. Casparian strip b. stele c. pericycle d. endodermis e. pith