A team of students is performing an experiment to determine how the speed of a reaction between HCl and Na2CO3 changes with temperature. The aspect of the  experiment that does not have to be kept constant would be the initial concentrations of the reactants. Hope this helps. Have a nice day.
        
             
        
        
        
Dna holds information for the cells that make up an offsprings body and traits. A parents' genes will pass on this way. 
        
             
        
        
        
Answer: True
Cell -> Tissue -> Organ -> Organ System -> Organism.
        
             
        
        
        
The answer to your question is,
Adenine (A), Guanine (G), Cytosine (C), and Thymine (T).
-Mabel <3
 
        
                    
             
        
        
        
Answer:
The correct answer is - proteins.
Explanation:
Enzymes are made up of the long chains of amino acids that are linked by the peptide bonds that make a polypeptide chain known as proteins. Proteins are the building block of the enzyme and the building of thevarious structures in the body.
Enzymes are made up of two protein that also plays as the role of a biological catalyst whereas protein only plays role in forming different structure and performing functions.