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Bio 169 exam 1; Questions & Answers 100% Correct $11.99   Add to cart

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Bio 169 exam 1; Questions & Answers 100% Correct

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Bio 169 exam 1; Questions & Answers 100% Correct endocrine system Correct answer-Composed of ductless glands that synthesize and secrete hormones Hormones are released into the blood and transported throughout the body target cells Correct answer-cells that have receptors for a particular ho...

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  • August 9, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Bio 169
  • Bio 169
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GOLDTUTORS
Bio 169 exam 1; Questions & Answers 100%
Correct
endocrine system Correct answer-Composed of ductless glands that synthesize and
secrete hormones

Hormones are released into the blood and transported throughout the body




target cells Correct answer-cells that have receptors for a particular hormone




endocrine glands Correct answer-Glands of the endocrine system that release hormones
into the bloodstream




comparison of both systems Correct answer-Both the endocrine and nervous system

Release ligands—chemical messengers




Difference between the two systems Correct answer-Unlike the nervous system, the
endocrine system

Transmits hormones through the blood

Targets any cells in the body with correct receptors

Can be very widespread

Exhibits longer reaction times

Has longer-lasting effects (minutes to days and weeks)




hormonal stimulation Correct answer-A gland cell releases its hormone when some other
hormone binds to it

, Bio 169 exam 1; Questions & Answers 100%
Correct

Humoral stimulation Correct answer-A gland cell releases its hormone when there is a
certain change in levels of a nutrient or ion in the blood




Nervous stimulation Correct answer-A gland cell releases its hormone when a neuron
stimulates it




Steroids Correct answer-Lipid-soluble molecules synthesized from cholesterol




Biogenic amines Correct answer-Modified amino acids, Water-soluble except for thyroid
hormone (TH)

TH is nonpolar (made from a pair of tyrosines) and lipid soluble




Proteins Correct answer-Most hormones are in this category

Water-soluble chains of amino acids




Lipid-Soluble Hormones Correct answer-Lipid-soluble hormones can diffuse across target
cell membrane, The complex binds to a hormone-response element of DNA

Results in transcription of an mRNA, which is translated to a protein

The protein may have structural or metabolic effects

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