The answer would be B i believe<span>(a protease) begins the chemical digestion of protein</span>
        
             
        
        
        
Answer:
Option (A).
Explanation:
Estrogen hormone is important for the regulation of the female menstrual cycle and their growth and development. Insulin is an important hormone that regulates the blood glucose level.
The hormones insulin and estrogen is placed in the mixture of 2:1 hexane/water. Insulin is hydrophilic molecule and can easily dissolce in water. Estrogen is a hydrophobic molecules and easily dissolve in hexane.
Thus, the correct answer is option (A). 
 
        
             
        
        
        
The answer is the moon because it’s closer than any other celestial body.
        
             
        
        
        
Answer:
COUNTRY/ Material
Explanation:
those are just obvious answers
 
        
             
        
        
        
Mitosis helps in the growth by means of hyperplasia. It also helps in reproduction in single celled organisms. 
Neuron and Red Blood Cells doesn't undergo cell division once formed. 
Osteoblasts help in forming new bones and joining old ones after there's a fracture in bone. 
<h3><u>Explanation:</u></h3>
Mitosis is the process by which a cell divides into two daughter cells. It helps in growth of multicellular organisms as well as reproduction in single celled organisms. 
The Red blood cells are formed from the bone marrow megakaryocytes and never undergo mitosis. Same are the neurons which are formed from stem cells and never undergo cell division. 
The osteoblasts come into action as the bone breaks. They diposit new calcium compounds between the broken part of bones. This leads to irregular growth of bones between them which is then remoulded and brought back to shape by osteoclasts and osteocytes.