Water diffuses into the skin via sweat ducts which alters the electrolyte balance. electrolytes can be salts like sodium and potassium. This alters the stability of neurons causing blood vessels to constrict therefore decreasing the amount of fluid in the fingers which would normally give the skin tension. The decrease causes wrinkles.
        
             
        
        
        
Answer:
enzymes are special proteins that increase the rate of a reaction by decreasing the amount of energy needed to get a reaction started 
 
        
             
        
        
        
Answer:
a. retained in the pyruvate
Explanation:
Glycolysis is a cytoplasmic pathway that converts glucose into two pyruvate, releasing a modest amount of energy captured in two substrate-level phosphorylations and one oxidation reaction.
Following are the important enzymes in it :
- Hexokinase
- Phosphofructokinase
- Pyruvate kinase
Aerobic glycolysis yields 2ATP/glucose plus 2NADH/glucose but most of the energy is retained in pyruvate which is then converted into Acetyl-CoA and enters the kreb's cycle.
 
        
             
        
        
        
The change in chemical composition of interstitial fluid affects the oxygen and nutrients transportation to the cell, and also removal of waste from the cell. 
Interstitial fluid- Extracellular fluid is mostly made up of blood plasma and interstitial fluid. Interstitial fluid is the substance that fills the spaces between cells. Salts, water, cellular waste products, coenzymes, hormones, carbohydrates, fatty acids, and amino acids make up its composition.
Chemical Composition- The chemical composition of a material refers to the configuration, proportion, and kind of atoms in chemical substance molecules. The chemical makeup will alter when substances interact. For instance, when hydrogen and oxygen combine, water is produced.
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