BIO 305 EXAM 4 2026 FINAL REVIEW PACK COMPLETE QUESTION SET AND CORE CONCEPT SUMMARY

BIO 305 EXAM 4 2026 FINAL REVIEW PACK
COMPLETE QUESTION SET AND CORE
CONCEPT SUMMARY

◉ neurons also act as ________ cells. Answer: endocrine


◉ why aren't paracrine and autocrine endocrine signaling. Answer:
signal does not travel through blood


◉ 3 chemical classes of hormones. Answer: steroid
amine
protein


◉ steroids are derived from. Answer: cholesterol


◉ amines are derived from. Answer: AA


◉ structure informs _________. Answer: fxn


◉ we need ___________ which is made by the liver. Answer: cholesterol

,◉ _______ and ________ hormones are made ___ _______ and are bad at
storage. Answer: steroid and thyroid
on demand


◉ hydrophobic horm
(long/short) lasting
what kind of receptor
what 2 types. Answer: long lasting
nuc receptor
steroid/thyroid


◉ 4 types of steroid horm. Answer: aldosterone
estradiol
cortisol
testosterone


◉ hydrophilic horm
(long/short) lasting
what kind of receptor
what 2 types. Answer: short lasting
cell surface receptors
amine/peptide

, ◉ problems of endocrine signaling. Answer: dilution and attached to
carrier proteins


◉ 2 types of hormone receptors. Answer: cell surface and nuc


◉ nuclear receptor usually needs hormone to do what. Answer:
enter cell


◉ what does the receptor hormone complex do. Answer: binds DNA
and increases gene transcription


◉ 3 types of hormonal regulation. Answer: synergism
permissiveness
antagonism


◉ synergism. Answer: 1 + 1 = 4


◉ permissiveness. Answer: second horm permits first to act


◉ antagonism. Answer: 1 + 1 = 0