Answers edited by Samin Yasar

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• Where does the respiratory system begin and end?
  
• Would life on other planets need to have DNA?
  
• Glucose and oxygen are the reactants when respiration takes place in cells.Oxygen is absorbed into the blood in the lungs. How are the lungs are adapted for this function?
  
• What major organs make up the skeletal system? How can we keep the skeletal system healthy?
  
• What are the 5 hormones associated with the female reproductive system?
  
• Is the cerebral cortex the outermost part of the cerebrum, or are they the same thing?
  
• Why is it correct to call red blood cells living cells?
  
• Question #28fe7
  
• What affect does the urinary system have on the blood pressure? What affect does the renal system have on the blood pressure?
  
• If an individual's pancreatic islets have been destroyed, what will happen?