What is some evidence for using leptin as a treatment for human obesity?
What will be an ideal response?
> receptors for leptin were found in then rain, and injecting it into ob/ob mice reduced both their eating and their body fat
> however, when the research turned to humans, obese human were found to have high, rather than low, levels of leptin; in addition, injections of leptin did not reduce either the eating or the body fat of obese humans
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Human infants of extremely low or high birth weights survive at lower rates than do babies of average birth weight. This is an example of ________ selection
a. directional b. disruptive c. stabilizing d. sexual
Name the three animal phyla that feed and respire with a lophophore
What will be an ideal response?
For each of the three basic macromolecules (proteins, polysaccharides, and nucleic acids), identify the monomer, its activated/carrier form, and one or two basic functions
What will be an ideal response?
Mineral and growth factor storage
What will be an ideal response?