How can cretinism be prevented? How is cretinism treated?
What are the characteristics of cretinism?
Why is cretinism not reversible?
Can babies have a thyroid problem?
What is the difference between cretinism and dwarfism?
What are early warning signs of thyroid problems?

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explanation:

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.