AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DNA polymerase and RNA polymerase are different in that they
A
are involved in synthesis of different polymers
B
DNA is a biological catalyst and RNA is not
C
DNA polymerase synthesizes proteins and RNA polymerase synthesizes carbohydrates
D
Stop trying to trick me; none of these are true!
Explanation: 

Detailed explanation-1: -What is the difference between DNA Polymerases and RNA Polymerases? DNA Polymerase is an enzyme that is required during the replication of DNA. Contrarily, RNA Polymerases are required for transcription and translation.

Detailed explanation-2: -DNA Polymerase synthesizes double-stranded DNA molecules, while RNA Polymerase synthesizes single-stranded RNA molecules. DNA Polymerase uses deoxyribonucleotides to form a new double-stranded DNA molecule, while RNA Polymerase uses ribonucleotides to form a single-stranded RNA molecule.

Detailed explanation-3: -DNA synthesis is the process of synthesizing a double stranded DNA through semi-conservative replication by using enzymes. RNA synthesis is the process of synthesizing an RNA through the process of transcription using an enzyme-mediated method.

Detailed explanation-4: -DNA-dependent RNA polymerases can also initiate RNA synthesis de novo. During the abortive initiation phase, the RNA polymerases initiate RNA synthesis at a promoter DNA sequence and produce short RNA oligonucleotides (3 to 8 nucleotide long).

Detailed explanation-5: -The enzyme that synthesizes DNA, DNA polymerase, can only add nucleotides to an already existing strand or primer of DNA or RNA that is base paired with the template. An enzyme, DNA polymerase, is required for the covalent joining of the incoming nucleotide to the primer.

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