Answer:
B. The amount of unbound cyclin E is lowest as the cell enters S.
Explanation:
The reproduction of the cell is a cycle that it regulates by itself, depending the  demand of a certain cell. 
In the case of the mitosis, in Each change from G1 to S to G2 to M is regulated by some proteins like the cyclin. 
In the case of the cdK2 is ncessary to pass the control point to pass from the stage G1 to the stage S.
Another characteristic of the cyclins, is that these proteins are synthetized and degraded constantly during the hole process. 
Hope this is a useful info 
 
        
             
        
        
        
Answer:
A ribosome is made up of two basic pieces: a large and a small subunit. During translation, the two subunits come together around a mRNA molecule, forming a complete ribosome. The ribosome moves forward on the mRNA, codon by codon, as it is read and translated into a polypeptide (protein chain).
Explanation:
 
        
             
        
        
        
Protein deficiency can cause muscle cramping, weakness, and soreness. If you aren't consuming enough protein, your body will start to take protein from your skeletal muscles, which will lead to your muscles wasting over time.
 
        
                    
             
        
        
        
The answer is D bro ponte pila