Sally wonders how much of a role genetics plays in determining her weight. she has heard about a gene, called ob, that codes for a protein that maintains homeostasis by regulating food intake and energy expenditure in response to adipose tissue. what is the name of the protein?

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas