What do T3 and T4 stand for in the context of thyroid hormones?
Thyroid Hormones

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Science, Biology, Chemistry
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Triiodothyronine and Tetrahydrothyronine
Triiodothyronine and Tetraiodine
Triiodothyronine and Tetraethylene
Triiodothyronine and Tetraiodothyronine
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of thyroglobulin in thyroid hormone biosynthesis?
It acts as a catalyst for hormone synthesis.
It provides the tyrosine residues for iodination.
It converts T4 to T3.
It transports hormones in the bloodstream.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme is responsible for the iodination of tyrosine residues in thyroglobulin?
Iodine synthase
Thyroxine reductase
Thyroglobulinase
Thyroid peroxidase
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is hypoiodite in the context of thyroid hormone synthesis?
A monatomic iodine ion
An iodide ion with one oxygen atom
A form of iodine with two oxygen atoms
A diatomic iodine molecule
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is involved in the iodination of tyrosine residues?
Radical substitution
Electrophilic aromatic substitution
Hydrogenation
Nucleophilic substitution
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are T3 and T4 hormones released from thyroglobulin?
Through a radical coupling mechanism
By direct diffusion into the bloodstream
Via proteolytic cleavage by proteases
Through passive transport
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of T3 in the body?
To regulate calcium levels
To store energy
To decrease metabolic rate
To increase metabolic rate
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