Multiple Choice
Which type of receptors for the neurotransmitter acetylcholine are found in the sarcolemma at a neuromuscular junction?
5
views
10. Cell Signaling
Introduction to Cell Signaling
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of cell signaling, which of the following best describes the role of a ligand when it binds to a cell surface receptor?
A
It directly synthesizes new proteins in the cytoplasm.
B
It transports ions across the plasma membrane.
C
It initiates a signal transduction pathway inside the cell.
D
It degrades the receptor to terminate the signal.
Verified step by step guidance1
Understand the concept of cell signaling: Cell signaling is the process by which cells communicate with each other using signaling molecules, such as ligands, to trigger specific responses.
Define the term 'ligand': A ligand is a molecule that binds specifically to a receptor on the cell surface or inside the cell, initiating a biological response.
Explain the role of a receptor: Receptors are proteins located on the cell surface or within the cell that recognize and bind to ligands. This binding triggers a signal transduction pathway, which is a series of molecular events leading to a cellular response.
Clarify the function of signal transduction: Signal transduction pathways amplify and relay the signal from the ligand-receptor interaction to produce a specific cellular response, such as gene expression, enzyme activation, or changes in ion concentrations.
Conclude the correct description: When a ligand binds to a cell surface receptor, it does not directly synthesize proteins, transport ions, or degrade the receptor. Instead, it initiates a signal transduction pathway inside the cell, leading to the desired cellular response.
5:03mWatch next
Master Introduction to Cell Signaling with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Cell Signaling practice set
Problem sets built by lead tutorsExpert video explanations