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BIO 169 Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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BIO 169 Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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BIO 169 Exam 1 | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
Does the endocrine system work slow or fast? - Slow but lasts longer
Which system does the endocrine system work with? - Nervous system
What are functions of the endocrine system? - regulates metabolism, digestion, reproduction
Free hormones act on their target tissues immediately after being delivered from the blood. True or
False - True
Exocrine secretes glands through ducts true or false - true
Where does endocrine release? - Blood stream
What links the nervous system to the endocrine system? - hypothalamus
What are hormones? - Chemical messengers that control the growth, differentiation, and metabolism of
specific target cells
What is autocrine? - Local regulator acts on the cell that released it (a note to remind yourself) common
in cancer cells
Paracrine? - Referring to a secreted molecule that acts on a neighboring cell.
Steroid hormones are synthesized by - cholesterol
True or false: Hormones only have an affect on target cell. - true
, What are water soluble hormones? - bind to receptors outside of plasma membrane. Work through
second messengers. CANNOT ENTER DIRECTLY. MUST GO THROUGH RECEPTOR
What are lipid soluble hormones? - have receptors inside of cell which bind inside of cell.
G proteins turn ATP into - cAMP
What happens when something binds to a protein? - shape is changed therefore the job of protein is
changed.
Calcium acts as which messenger? - Second messenger
Do steroid and thyroid hormones need secondary messengers? - No, they diffuse directly into target
cells
mRNA makes ______ - protein
Are specific receptors necessary? If so, why? - Yes bc When you have a receptor that receptor is only
gonna be able to "see" a certain type of hormone. If there is no receptor, that cell is not going to be
affected.
What does thyroid hormone make us produce more of? - ATP
What is down regulate? - a cell starts to get overwhelmed and decrease the number of receptors to
lower number of signals.
What is up regulate? - when cells up the number of signals.
Endocrine glands will be stimulated by_________ - other hormones or neural stimuli
What is considered master gland? - Pituitary
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