Question

2 points
Arrange the following
sequence of extracellular
signaling in the correct order?
1) Transport of signal to a
target 2) Start of signal
transduction pathways 3)
Signaling cell synthesize and
release signaling molecules 4)
Binding of the signal to the
specific receptor *
O a) 2, 3, 4, 1
O b) 3, 1, 4, 2
O c) 1, 2, 3, 4
O d) 1, 3, 4, 2​

Answer 1

options c is correct for it

Answer 2

b) 3, 1, 4, 2 is the correct answer.

• Extracellular signalling refers to the signalling through molecules, which transfer information to target cell.
• The process is required for survival, metabolism, growth and development of cells and organisms.
• The signalling molecules can be hormones, neurotransmitters, cytokines etc.
• They reach the target cell and bind to receptors that recognise them.
• The binding further starts or stop activities in the cell, by the help of signalling pathways.