<em>A reason for disruption of the cell cycle is;</em>
A. Mutation 
<u>A mutation in a protein that is meant to either slow or stop the cell cycle can cause a cell to lose control and possibly form cancer.</u>
 
        
             
        
        
        
True. if it is a true/false question the answer is True.
 
        
             
        
        
        
Answer:
Option (B).
Explanation:
Mixture may be defined as the solution obtained by mixing of two or more substances together. Two different types of mixture are homogeneous mixture and heterogeneous mixture.
Homogeneous mixture may be defined as the mixture that has uniform composition throughout the mixture and cannot be separated easily by physical shaking process. Heterogeneous mixture are the mixtures that has different composition throughout the mixture and can be separated by simple shaking.
Thus, the correct answer is option (B).
 
        
             
        
        
        
All fibers of the semimembranosus muscle are converged to insert on the posterior tibia.  
Semimembranosus muscle is amongst the hamstring muscles that are present in the posterior region of the thighs. These are the muscles responsible for the extension of the hips and flexion of the knee. The innervation to this muscle is provided by the tibial nerve. 
Tibia is also called the shinbone. It is one of the two bones of the lower leg.  The bone carries the maximum of the body's weight and gains support from the fibula, the other bone of the lower leg. Tibia is also the most commonly fractured bone in maximum people. 
To know more about tibia, here
brainly.com/question/14212355
#SPJ1
 
        
             
        
        
        
Answer:
 A. 20
Explanation:
 Truth is its actually 22.5 but including that you can just round it, 20 is the best answer.