The organ that serves as the starting point of the respiratory system would be the nose. It is where respiration starts by taking in the air from the atmosphere and it also ends here by breathing out carbon dioxide a waste gas produced from the processes in the body which is not utilized by our body.
Explanation:
Hormones are the chemical signaling molecules produced by the endocrine glands and secreted directly into the bloodstream. They travel through the blood to distant tissues and organs, where they can bind to specific cell sites called receptors.
Answer:
A cell wall, chloroplasts, plastids, (and in some cases vacuoles but they are sometimes present in both)
Explanation:
Answer: Approximately 1 in 70 individuals carry an mutated allele
