It went extinct 125,000 years ago.
Answer:
1. to increase meiosis.
2. to make more efficient cell organelles.
3. to cause the second organism to produce protein
Explanation:
Answer:
Explanation down below!
Explanation: It serves to produce lipids and steroid hormones, to rebuild plasma membranes, and to serve as a pathway for molecules to move along. These processes are essential to life for all eukaryotic cells.
Hope this helps!
Answer: Receptor proteins
Why?
Cells have proteins called receptors that bind to signaling molecules and initiate a physiological response. Different receptors are specific for different molecules. Dopamine receptors bind dopamine, insulin receptors bind insulin, nerve growth factor receptors bind nerve growth factor, and so on.