Thyroid Hormone (A Small Iodinated Amine) Enters Target Cells in a Manner

question 90

Multiple Choice

Thyroid hormone (a small iodinated amine) enters target cells in a manner similar to ________.

• A) insulin, because insulin is a small peptide
• B) steroid hormones, because both diffuse easily into target cells
• C) growth hormone, because the thyroid works synergistically with thyroid hormone
• D) glucagon, because the structure of glucagon is similar to that of thyroid hormone

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Definitions:

Protein-Coding Segments

Portions of DNA or RNA that contain the information necessary to build proteins, crucial for all biological processes.

Pseudogenes

Segments of DNA that resemble functional genes but are nonfunctional due to mutations.

Genetic Variation

The diversity in gene frequencies within a population, which is a primary source of evolution and adaptation.

Germline Cells

Cells that are involved in the reproduction process and give rise to gametes, carrying genetic information to the offspring.