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Questions and Answers
How do cells interact physically through direct contact?
How do cells interact physically through direct contact?
- By directly touching each other (correct)
- By releasing specific receptors into the environment
- By secreting ligands that bind to receptors
- Through GPCRs that transmit signals to the nucleus
What triggers a cascade of intracellular events known as signal transduction?
What triggers a cascade of intracellular events known as signal transduction?
- Inhibition of protein kinase cascades
- Binding of ligands to receptors (correct)
- Activation of G proteins by secreted molecules
- Direct contact between target cells
How do GPCRs activate intracellular signaling pathways?
How do GPCRs activate intracellular signaling pathways?
- By directly modifying gene expression
- Through interaction with G proteins (correct)
- By inducing protein kinase cascades
- By binding to secreted ligands
What is the role of CED-9 in the PCD pathway of C.elegans?
What is the role of CED-9 in the PCD pathway of C.elegans?
Which key proteins are involved in the PCD pathway in C.elegans?
Which key proteins are involved in the PCD pathway in C.elegans?
What did Sydney Brenner, H.Robert Horvitz, and John E.Sulston receive the Nobel Prize for?
What did Sydney Brenner, H.Robert Horvitz, and John E.Sulston receive the Nobel Prize for?
Which ion plays a crucial role in muscle contraction by binding to troponin and tropomyosin?
Which ion plays a crucial role in muscle contraction by binding to troponin and tropomyosin?
What happens when calcium ions are released from the sarcoplasmic reticulum?
What happens when calcium ions are released from the sarcoplasmic reticulum?
What is the role of presynaptic terminals in neurons?
What is the role of presynaptic terminals in neurons?
Why is understanding neurons crucial for understanding the nervous system?
Why is understanding neurons crucial for understanding the nervous system?
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