Answer:
Periosteum, dense fibrous membrane covering the surfaces of bones, consisting of an outer fibrous layer and an inner cellular layer (cambium). The outer layer is composed mostly of collagen and contains nerve fibres that cause pain when the tissue is damaged.
 
        
             
        
        
        
Proteins attract water and hold it within blood vessels, preventing it from freely flowing into the spaces between the cells. This is an example of how protein is used for maintaining fluid and electrolyte balance.
<h3>What is Protein?</h3>
- Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues.
- Among the many tasks that proteins carry out in living things include catalyzing metabolic processes, replicating DNA, reacting to stimuli, giving cells and organisms structure, and moving molecules from one place to another. 
- The primary way that proteins differ from one another is in the order of their amino acids, which is determined by the nucleotide sequence of their genes and typically causes a protein to fold into a certain 3D structure that controls its activity.
<h3>What Constitutes Proteins? </h3>
- Amino acids, which are tiny chemical compounds with an alpha (central) carbon atom coupled to an amino group, a carboxyl group, a hydrogen atom, and a variable component known as a side chain, are the building blocks of proteins.
Learn more about Protein here:
brainly.com/question/17095120
#SPJ4
 
        
             
        
        
        
The chloroplast is found only in plant cells. it is the organelle that conducts photosynthesis, but mitochondria are known as the PowerHouse of the cell, and store energy.
        
                    
             
        
        
        
Answer:
some stuff you can just look up on goigle my dude
 
        
             
        
        
        
Well they share the function of giving nutrition to the buds and the leaves on the plant , but they preform this function in different way from each other