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Endocrine System › View

The endocrine glands are ductless glands. Therefore, the hormones are secreted directly into the blood flow. Although the hormones are transported throughout the body in the blood, the hormones only influence and affect specific target cells because

A. The hormones have specific molecule receptors

B. The target cells have specific molecule receptors on its membrane surface

C. The walls of blood capillaries are only permeable to a certain type of hormone

D. The hypothalamus controls the hormone to be transported to the target cell

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Limitation of Senses › View

People who are visually challenged use the __________ script for reading

A. Lewis

B. Braille

C. Marcus

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