Answer:
proteins
Explanation: 
Transport protein is responsible for the movement of molecules across the cell membrane. This process occurs in active transport. Active transport is a type of transport in which energy is used in the form of Adenine tri phosphate (ATP) to move particle across semi-permeable of the cell. Molecules such as nutrients, Sodium, glucose, oxygen and carbondioxide can pass through it. 
 
        
             
        
        
        
The body system that directly provides for this demand is the circulatory system. When you exercise, the circulatory and muscle system cooperate, in order to meet the increased needs for strength and energy. The circulatory system involves the network which delivers blood to every part of your body. This flowing of blood ensures that the tissues are oxygenated and rich in necessary nutrients. During exercise, more blood flows to and from your muscles, in order to deliver the necessary amounts of oxygen to complete the aerobic respiration. 
        
                    
             
        
        
        
Answer: Frameshift mutations are due to either insertions or deletions of nucleotides
Explanation:  Frameshift mutations result in abnormal protein products with an incorrect amino acid sequence that can be either longer or shorter than the normal protein.