The question is; would a drug that binds irreversibly to these receptors be an effective contraceptive in mammals?, the answer is;Yes; because if the receptors are blocked the sperms will not be able to penetrate the zonal pellucida of the egg. Contraceptives prevents pregnancy by interfering with the normal process of ovulation, fertilization, and implantation.
Answer: Unlike the one way flow of energy, matter is recycled within and between ecosystems.
Explanation:
Answer:
signaling processes
Explanation:
Neurons within the brain are constantly processing and transmitting information. Electrical impulses that pass from one neuron to another consume a lot of energy. So, sending, receiving and processing the signals are the main events of brain energy expenditure. Neurons also use the energy for the maintenance of themselves and the surrounding glial cells.
Glucose is the main energy source in the brain.
