Endo Quiz 2 Questions and Answers
1. Steroid hormone - made in smooth ER
synthesis - cholesterol converted to pregnenolone via P450scc in the mitochondria then
converted to steroid
2. steroid hormone - intracellular receptor that turns on specific genes when it is activated by binding
receptors a signal molecule
3. peptide hormone - preprohormone in ER > cleaved to prohormone > Golgi > hormone > stored in
synthesis vesicles til secreted
- made up of amino acids
4. peptide hormone cell surface receptors
receptors
5. peptide cleavage - POMC splits into 3 active peptides + 1 inactive fragment
- happens during the stress response
6. constitutive se- - hormone secreted immediately after synthesis
cretion - not stored in the body
7. regulated secre- - regulatory signals trigger secretion
tion - longer storage
8. Thyroid hor- - two tyrosine molecules + iodine atoms
mones - T3 and T4
- behave like steroids; not water soluble
9. monoamine syn- - enzymatic alteration of amino acid precursors
thesis
10. Catecholamines - dopamine, norepinephrine, epinephrine
11. Indolamines
1/5
, Endo Quiz 2 Questions and Answers
- derived from tyrosine
11. Indolamines
1/5
1. Steroid hormone - made in smooth ER
synthesis - cholesterol converted to pregnenolone via P450scc in the mitochondria then
converted to steroid
2. steroid hormone - intracellular receptor that turns on specific genes when it is activated by binding
receptors a signal molecule
3. peptide hormone - preprohormone in ER > cleaved to prohormone > Golgi > hormone > stored in
synthesis vesicles til secreted
- made up of amino acids
4. peptide hormone cell surface receptors
receptors
5. peptide cleavage - POMC splits into 3 active peptides + 1 inactive fragment
- happens during the stress response
6. constitutive se- - hormone secreted immediately after synthesis
cretion - not stored in the body
7. regulated secre- - regulatory signals trigger secretion
tion - longer storage
8. Thyroid hor- - two tyrosine molecules + iodine atoms
mones - T3 and T4
- behave like steroids; not water soluble
9. monoamine syn- - enzymatic alteration of amino acid precursors
thesis
10. Catecholamines - dopamine, norepinephrine, epinephrine
11. Indolamines
1/5
, Endo Quiz 2 Questions and Answers
- derived from tyrosine
11. Indolamines
1/5
