Home › AP Biology › Biology › Cell Communication › Budding yeasts use a secreted signaling molecule…
Budding yeasts use a secreted signaling molecule to find another haploid yeast cell ready to mate. What is this molecule called?
AAn autoinducer
BMating factor
CA neurotransmitter
DA growth factor
Answer & Solution
Correct answer: B. Mating factor
1. Budding yeasts participate in a process similar to sexual reproduction between two haploid cells.
2. To find another haploid yeast cell prepared to mate, budding yeasts secrete a signaling molecule called mating factor.
3. When mating factor binds cell-surface receptors on nearby yeast cells, those cells stop their normal growth cycle and begin a signaling cascade.
4. Autoinducers are instead the signaling molecules used by bacteria in quorum sensing, a different system.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 9 "Cell Communication", section Signaling in Yeast_
Related questions
Bacteria use two broad types of autoinducers during quorum sensing that act through differBacterial signaling that depends on the population density of bacteria in the environment Cyclic AMP signaling is terminated when cAMP is broken down into AMP. Which enzyme carriesSeveral enzymes reverse the modifications made during a signaling cascade to terminate theDuring T-cell development, immature T cells are screened to see whether they bind to the bApoptosis is described as a controlled process that a cell can trigger under certain condiMost growth factors bind to cell-surface receptors linked to tyrosine kinases, called receAdrenaline raises cAMP inside muscle cells, which activates PKA. PKA then phosphorylates t