Opioid receptors interact with G proteins and arrestin. In consequence, opioid receptors interact with protein biomolecules.
<h3>Proteins and opioid receptors</h3>
Proteins are fundamental biomolecules composed of long chains of building blocks called amino acids linked by peptide bonds.
Proteins may have both structural (e.g., components of the cytoskeleton) and enzymatic functions (in this case, activation of signaling pathways).
Opioid receptors interact outside the cell membrane with opioid drugs (e.g., heroin) and with the G proteins inside the cell.
Opioid receptors also interact inside the cell with a special protein that is known as arrestin, thereby activating specific signaling pathways.
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brainly.com/question/5609367
Answer:
earthquakes around the North American continent
Answer:
1) Pollen is released from the anther.
2) Pollen sticks to the stigma.
3) Pollen tube forms and grows through the style.
4) The pollen tube reaches the ovule within the ovary.
5) Sperm fertilizes the egg.
Explanation:
Pollination is a process in which pollen grains are transfer from anther to stigma of the flower. It occurs through wind, water and insect such as bees. When pollen gets mature, it falls from anther to the stigma. There it makes a tube which goes to the ovary. This pollen reaches the ovary through this tube and combines with ovule and fertilization occurs.
