10 Questions
How do cells interact physically through direct contact?
By directly touching each other
What triggers a cascade of intracellular events known as signal transduction?
Binding of ligands to receptors
How do GPCRs activate intracellular signaling pathways?
Through interaction with G proteins
What is the role of CED-9 in the PCD pathway of C.elegans?
Prevents cell death by keeping CED-4 bound and inactive
Which key proteins are involved in the PCD pathway in C.elegans?
CED-4 and CED-9
What did Sydney Brenner, H.Robert Horvitz, and John E.Sulston receive the Nobel Prize for?
Discoveries concerning genetic regulation of organ development and programmed cell death
Which ion plays a crucial role in muscle contraction by binding to troponin and tropomyosin?
Calcium ions
What happens when calcium ions are released from the sarcoplasmic reticulum?
They bind to troponin and cause a conformational change in tropomyosin
What is the role of presynaptic terminals in neurons?
Releasing neurotransmitters
Why is understanding neurons crucial for understanding the nervous system?
Neurons transmit information in the nervous system
Test your knowledge on how dysregulation of cell signaling pathways can lead to diseases like cancer. Explore the mechanisms of contact-dependent signaling and signaling through secreted molecules. Learn about how cells detect signaling molecules and initiate intracellular events by binding ligands to receptors.
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