Multiple Choice
Why do steroid hormones use a transport protein?
16. The Endocrine System
Introduction to the Endocrine System
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Autocrines are long-distance chemical signals that travel in blood throughout the body.
A
False
B
True
Verified step by step guidance1
Understand the definition of autocrines: Autocrines are chemical signals that act on the same cells that secrete them, meaning they do not travel long distances.
Differentiate between autocrines and other types of signaling: Compare autocrines with paracrines, which act on nearby cells, and hormones, which are long-distance signals that travel through the bloodstream.
Analyze the statement: The problem states that autocrines are long-distance signals, which contradicts the definition of autocrines.
Evaluate the statement's truthfulness: Based on the definition, determine whether the statement is true or false.
Conclude the evaluation: Since autocrines do not travel long distances, the statement is false.
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