A signal reaches a cell mostly in the form of a signalling molecule binding to a receptor on the cell surface. This binding activates a chain of events that amplifies the signal and transfers it inside the cell. Protein kinases phosphorylate proteins and cause their activation or deactivation, or in general modify their activity. When a signalling molecule binds to a receptor, a cascade is activated and the second messengers, such as cAMP, are synthesized. cAMP molecules activate the protein kinases, which phosphorylate specific proteins and activate them.
Answer:
1- Information is transcribed in DNA to mRNA
2- mRNA leaves the nucleus
3- Ribosome attaches to the mRNA
4- tRNA anticodon carries an amino acid that compliments the mRNA codon
5- The chain of amino acids forms a protein
Explanation:
Um. Yes? The braij is responsible for the nervous system.
Answer:
Describe how oxygen gas is produced during photosynthesis?
Photosynthesis entails the reaction between carbondioxide and water which gives glucose and evolve oxygen
Explanation:
Age, Diet, lifestyle choices, environment and RES
