Answer:
Almost all calcium in the body is stored in bones and teeth, giving them structure and hardness. Your body needs calcium for muscles to move and for nerves to carry messages between your brain and every part of your body.
Sodium-Potassium Pump
Three sodium ions bind to intracellular sites on the sodium-potassium pump.
A phosphate group is transferred to the pump via the hydrolysis of ATP.
The pump undergoes a conformational change, translocating sodium across the membrane.
 
        
             
        
        
        
Answer:
4.26
Explanation:
Let the green-melon parents be Gg, then we expect the cross with the yellow-melon plant gg so as to produce 50% Gg and other 50% of gg offspring. What we observed was that 53 green and a 41 yellow. Based on the total number of 94 offspring , we expected half and a half ratios to be 47 of each color.
                                 Observed(o)   Expected(e)   (o-e)     
      
Green-melon plant        53                    47               6          36             0.766
Yellow-melon plant        41                    47              -6          36             0.766
Therefore the chi-square value is 1.53 which is less than the critical value of 3.84. Therefore, the null hypothesis is accepted.
 
        
             
        
        
        
The nitrogenous bases in DNA are adenine, guanine, thymine, and cytosine.
The nitrogenous bases in RNA are adenine, guanine, uracil, and cytosine.
So the base in RNA that is different than in DNA is uracil.
Hope this helps.
        
             
        
        
        
The answer is mechanical weathering