Pharynx is <span>is located where the nose and mouth come together
it is a muscular tube extends from base of skull to its junction at the esophagus
hope it helps</span><span />
Answer:
Transcription factors.
Explanation:
Transcription and translation are the two important process involved in the gene expression of a particular protein. Transcription is the formation of RNA and translation is the formation of proteins.
Transcription requires different enzymes and transcription factors. Transcription factors are important factors that regulates the expression of transcription and may increase or decrease the process of transcription. Here, the protein that binds with dioxin acts as the transcription factors as it regulates the gene expression.
Thus, the correct answer is option (3).
Dopamine is a neurotransmitter that is related to the positive feedback/reward system of mammal brains. Higher amounts of dopamine released in response to any stimulation will result in a stronger desire to recreate that stimulus. One could say that the extra dopamine released during drug use causes the brain to desire using the drug again to receive that same pleasurable reward sensation. <span />
They have valves that give it a pumping effect so that it can pump blood
