Biology

Question

HELP SCIENCE MASTERS!!!
#1 besides replicating DNA, what is another function of DNA polymerase? A protein synthesis B correcting errors C unwinding the helix D sending messages to the cell

#2 mutations are avoided during replication because DNA polymerase is able to _______. A repair itself B repair the DNA C encode a message D add more codes

#3 what gene is responsible for tumor suppression? A beta-galactosidase B p53 C alpha-globin D beta-globin

#4 which of these statements is true? A RNA codes for DNA which codes for proteins. B DNA codes for proteins which codes for RNA C DNA codes for RNA which codes for proteins D RNA codes for proteins which code for DNA.

2 Answer

  • 1. DNA Polymerase replicates but also proofreads and repairs.
    Answer: B. correcting errors 

    2. Polymerase check for and correct mutations.
    Answer: 
    B. repair the DNA

    3. P53 is coded by the t53 gene
    Answer: 
    B. p53

    4. Answer: 
    C. DNA codes for RNA which codes for proteins 
  • Answer:

    Answer:

    The process of DNA replication, in order for cells to divide, is a pretty complex process that requires several enzymes to work. One such enzyme is polymerase, without which the process of DNA replication would not take place. It is polymerase that ensures the creation of a new DNA strand from a template strang, and also, it ensures that coding errors and joining errors, are corrected before a mutated DNA strand in released. Thus, the answers to the questions are as follows:

    1. Besides replicating DNA, the other function of DNA polymerase is: B: Correcting errors. Polymerase is the one that adds nucleotides to the formed strands, but also reads the strand to correct errors in the coding system.

    2. The polymerase prevents mutation of the DNA because it is able to: B: Repair the DNA by removing the error and then correcting it with new nucleotides.

    3. The gene that is responsible for tumor suppression, among the many, is: B: p53. This gene produces protein p53, which prevents the formation of cancerous tumors and also, when it is missing it can lead to cancers such as colon, or leykemia.

    4. In the genetical play of replication, the correct steps will always be: DNA, to RNA, to protein. Therefore, the answer here is: C: DNA codes for RNA, which codes for protein.

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