Question

Rank the following types of cell signals in order from which signal molecule that travels the least distance to the type of signal molecule travels the largest distance.

_1_ paracrine signaling
_2_ contact -dependent signaling
_3_ neuronal signaling
_4_ endocrine signaling

A) 1,2,3,4
B) 2,3,1,4
C) 3,1,4,2
D) 4,1,3,2
E) 1,4,2,3

Answer 1

The correct order of cell signaling types from least distance to largest distance is 2,3,1,4: contact-dependent signaling, neuronal signaling, paracrine signaling, and endocrine signaling.

Step-by-step explanation:

The correct answer is B) 2,3,1,4

To rank the types of cell signals based on the distance that the signal molecule travels, we need to understand the nature of each signaling type:

1. Paracrine signaling: This type of signaling occurs between cells that are close together. The signal molecules move by diffusion through the extracellular matrix and typically elicit quick responses that last a short amount of time.
2. Contact-dependent signaling: The signaling molecules in this type of signaling are directly attached to the cell's surface and are transmitted through physical contact with target cells.
3. Neuronal signaling: This type of signaling involves the transmission of signals through specialized cells called neurons. These signals can travel long distances within the body.
4. Endocrine signaling: This type of signaling involves the release of signal molecules, called hormones, into the bloodstream to be carried to distant target cells.

Based on this information, we can conclude that the correct order from least distance to largest distance is 2,3,1,4.