QuestionIn the diagram below, which number represents endocrine signaling? Signaling cell Target cell bloodstream
Studdy Solution
STEP 1
What is this asking? Which diagram shows a signal traveling through the bloodstream to reach its target? Watch out! Don't confuse endocrine signaling with other types of cell communication!
STEP 2
1. Define Endocrine Signaling
2. Analyze the Diagrams
STEP 3
Endocrine signaling uses the **bloodstream** as the highway for **hormones** to travel from the signaling cell to the target cell.
It's like sending a message in a bottle, but way cooler and more biological!
STEP 4
Diagram 1 shows the signal looping back to the **same cell**.
This is called **autocrine signaling**, like talking to yourself!
STEP 5
Diagram 2 shows **direct contact** between the signaling and target cells.
This is like a whisper between friends!
STEP 6
Diagram 3 shows the signal traveling a **short distance** to a **nearby cell**.
This is called **paracrine signaling**, like shouting across the street!
STEP 7
Diagram 4 shows the signal entering the **bloodstream** and traveling to the target cell.
This matches our definition of **endocrine signaling**!
STEP 8
The correct answer is **4**.
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