BIOKIMIA task

QUESTION:
1. What is the dogma central of molecular biology?
2. What is buffer?
3. in the cells,enzymes works and active at certain pH
    how the cell maintaince the pH solution in the cell-> what chemical in the cel play a rule as buffer?
    what is buffering capacity?
ANSWER :
1. central dogma can defined as all the information about DNA; and then will use to produce RNA molecul with trancription and another information about ARN will use produce protein with translation process.
the mecanism dogma central biology molecular is :
a. the DNA replicates its informasion in a process that involves many enzymes. this process is replication.
b. the DNA codes for the production of messenger RNA (mRNA) during trancription.
c. in eucaryotic cell ,mRNA  is processed and migrates from the nucleous to cytoplasm.
d. messenger RNA carries coded information to ribosomes. The ribosomes "read" this ionformation and use it to protein synthesis. This process is called translastion
2Buffer can defined as the aqueous solution which can consisting of mixtur of a weak acid and its conjugates base or amount of strong acid or base is added to it.Buffer soution use to keeping pH at a nearly constant value in a wide variety of chemical aplication
3.enzyme we known as organic compounds or a protein generated catalyst in a reaction cell enzymes work as catalyst in our body called biokatalisator. enzyme also know as biolgymoleules such as protein that function as catalys in organic reaction.
buffer capacity can defined as maximum amount of either strong acid or strong base that can be add  before a significant change in the pH will occur(www.chembuddy.com)