Final answer:
The signaling molecule in yeasts is known as the mating factor, which allows yeast cells to communicate availability for mating through a complex signaling cascade.
Step-by-step explanation:
The type of molecule that acts as a signaling molecule in yeasts is pheromones. Pheromones are chemical compounds that are secreted by organisms to communicate with each other, particularly in mate attraction and recognition. In yeasts, the signaling molecule called mating factor acts as a pheromone to signal nearby yeast cells that they are available for mating.
In yeasts, the type of molecule that acts as a signaling molecule is the mating factor. This ligand molecule is produced by yeast cells to communicate to nearby yeast cells that they are available for mating. When the mating factor binds to cell-surface receptors on other yeast cells, it triggers a signaling cascade involving protein kinases and GTP-binding proteins similar to G-proteins, initiating changes that prepare the cells for mating.
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