when nicotine binds to nicotinic acetylcholine receptors in the brain, This causes the release of a specific neurotransmitter called dopamine.
<u>Explanation:</u>
- Dopamine is a neurotransmitter in the brain which causes pleasure to the brain but it is a complex chemical. Generally, dopamine gives a feeling of motivation, happiness, and focus.
- Due to the intake of nicotine, dopamine is secreted at a high level and it increases the excessive qualities of dopamine.
- It cause a serious problem in the brain. High secretion of dopamine will make us lose interest and became more complex in us.
Answer:
D) Adenine, Guanine, Cytosine, and Uracil
Explanation:
RNA shares three of the nitrogenous bases of DNA: Adenine, Guanine, and Cytosine. However, instead of thymine, it has Uracil!
Answer:
The ath operon is most likely controlled by the CAP and a repressor similar to the lac operon.
Explanation:
The CAP senses the low concentration of glucose and activates the transcription of the ath operon for it to metabolize the athelose and obtain energy. When the glucose is in high concentrations, the ath repressor, which works as a lac repressor, inhibits the transcription of the ath operon, it does this by binding to a part of the operon called operator getting in the ARN polymerase way and stoping the transcription. If there is glucose, the repressor binds to it and it is not bound to the operon allowing the transcription and metabolism of glucose.
