Question

which of the following statements about second messengers is correct.

a) these are secondary metabolites produced by the plants in response to an infections.
b) these are molecules generated during secondary steps of hormone
signalling
c) these are signalling molecules generated during secondary infections in animals.
d) these are proteins which help digest the secondary metabolites from plants.

Answer 1

if I gus 2or3 are true

Answer 2

Answer:

These are molecules generated during secondary steps of hormone signaling.

Explanation:

• When a cell is exposed to extracellular signaling molecules, or first messengers, second messengers, or intracellular signaling molecules, are released by the cell.
• Extracellular components, frequently hormones or neurotransmitters like adrenaline, growth hormone, and serotonin, are the first messengers.
• Contrary to steroid hormones, which often do, peptide hormones and neurotransmitters are typically biochemically hydrophilic molecules.
• As a result, these first messengers may not physically traverse the phospholipid bilayer to start changes within the cell.
• Due to this functional restriction, the cell must possess signal transduction pathways that can convert first messengers into second messengers, allowing the extracellular signal to spread within the cell.
• Second messengers can be connected downstream to multi-cyclic kinase cascades in the second messenger signaling pathway, considerably enhancing the initial first messenger signal.

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