Answer:
The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
hope it helps :)
 
        
             
        
        
        
<h2>Production of mitochondrion DNA  </h2>
Explanation:
- The cell is not capable to complete reaction related to ATP production and electron transport.
- This is because the electron transport chain and ATP production are combined with the association of protein in the inner membrane of mitochondrion DNA.
- Mitochondria are the powerhouses of the cell. In all eukaryotes that don't rely upon photosynthesis, the mitochondria are the primary wellspring of adenosine triphosphate (ATP), the vitality rich intensify that drives central cell capacities. 
- These capacities incorporate power age (for instance, in muscle compression and cell division), the biosynthesis, collapsing and debasement of proteins, and the generation and control of membrane possibilities.
 
        
        
        
I'm guessing its so they can be able to diagnose a patient and see whether they need treatment or not 
        
             
        
        
        
An element have the same number of protons as  electrons.
Therefore: if an element x (Lawrencium) has 103 protons, it has 103 electrons. 
        
             
        
        
        
Answer:
Biology is the study of living things and their processes of life. Both Hooke and Van Leeuwenhoek made major, early contributions to biology.
Robert Hooke
Robert Hooke is best known for the discovery of the cell. Using a microscope, Hooke looked at the makeup of a piece of cork. Through the microscope, he saw box-like structures. What he saw would later be known as cell walls. He discovered that these structures were cells, the building blocks of all life.
His discovery and future research contributed greatly to the cell theory.
Anton van Leeuwenhoek 
Leeuwenhoek made his discovery after Hooke, but it was still important. He is best known for the discovery of bacteria. Unlike Hooke, Leeuwenhoek did not study plant cells; instead, he focused on protists (like amoebas) and prokaryotes (like bacteria). For his work with unicellular organisms, he is often called the "Father of Microbiology."