Multiple Choice
Paracrine signaling is characterized by signaling molecules (ligands) that are _______:
10. Cell Signaling
Types of Cell Signaling
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Certain yeast cells secrete a molecule called the α factor. The purpose of this molecule is to __________.
A
kill other yeast cells nearby, which may be competing for access to food
B
kill bacteria nearby, which may be competing for access to food
C
attract other yeast cells of the same mating type to assemble
D
enzymatically process food into a form that can be easily absorbed
E
stimulate cells of the opposite mating type, a yeast cells, to grow toward the α cell
Verified step by step guidance1
Understand the role of the α factor in yeast cells. The α factor is a signaling molecule involved in the mating process of yeast cells.
Recognize that yeast cells have different mating types, typically referred to as 'a' and 'α'. These types are crucial for sexual reproduction in yeast.
The α factor is secreted by α cells to communicate with 'a' cells. This communication is essential for the mating process.
The primary function of the α factor is to stimulate 'a' cells to grow towards α cells, facilitating mating and genetic exchange.
This process is an example of chemotaxis, where cells move in response to chemical stimuli, in this case, the α factor.
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