Amino acid-derived and peptide hormones are unable to diffuse across a cell membrane because they are .
a. large
b. too complex
c. lipid-based
d. not easily dissolved in blood
e. polar

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

you should wear a lead protective shield when having teeth x-rays

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-lavira : )