I'm literally 99.9999% sure it's cytoplasm.
        
                    
             
        
        
        
Answer:
Cell membranes are selectively permeable which means it allow certain molecules to move across it into and out of the cell. Cells need to be able to transport these substances to live and grow.
Transport of ions, water maintains the osmotic pressure of the cell. Transport of sugars like glucose is necessary to generate energy for the metabolic activities of the cell. Gases like CO2 are waste products of metabolic reaction which are removed by the cell through the cell membrane. Amino acids are required to make proteins.  
Transport across cell can occur through active and passive transport and transport of these substance are necessary for a cell to live and function properly.
 
        
             
        
        
        
<span>hose at risk of exposure to blood or bodily fluid
The health care employees that are eligible to receive a hepatitis b vaccination for free are those who are at a high risk of exposure to contaminated blood or bodily fluid, this is in the hope to prevent them from catching hepatitis b while dealing with patients.</span>
        
             
        
        
        
Explanation:
The cause of DNA mutations is exposure to radiation from the sun and the effects of the DNA mutations are harmful mutations cause genetic disorder or cancer, changes gene's instruction for 
making protein causing malfunction. 
 
        
                    
             
        
        
        
Endocrine glands are those that release regulatory chemicals inside the body.  Choices A, B, and D are examples of endocrine glands.  C mentions sebaceous glands, which are found in the epidermis of the skin and secrete sebum (skin oils) onto the surface of the skin.  They have no regulatory function, other than to lubricate and protect the skin.  Sebaceous glands are exocrine glands, and are not part of the endocrine system.