Question

Rapid antigen test and RT-PCR are the two diagnosis test for Covid-19 virus. PCR, a molecular diagnostic, tool stands for

• A. Polymerase chain reaction
• B. Polymerase chain reagent
• C. Physiological chain reaction
• D. Physiological chain reagent

Answer 1

The Correct Option is A

The question asks for the full form of the acronym PCR, which is mentioned alongside Rapid Antigen Test and RT-PCR as diagnostic tools for COVID-19. 

PCR is a foundational technique in molecular biology used to amplify (make many copies of) a specific segment of DNA. RT-PCR (Reverse Transcription PCR) is a variation used for RNA viruses like SARS-CoV-2 (the virus causing COVID-19), where the viral RNA is first reverse transcribed into DNA, which is then amplified by PCR.

The acronym PCR stands for:

• P - Polymerase: Refers to the enzyme (DNA polymerase, often Taq polymerase) that synthesizes new DNA strands.
• C - Chain: Refers to the repetitive, cyclical nature of the process where the products of one cycle serve as templates for the next, leading to exponential amplification.
• R - Reaction: Refers to the biochemical process occurring in the test tube.

Therefore, PCR stands for Polymerase Chain Reaction.

Comparing this to the options:

• Polymerase chain reaction - Correct.
• Polymerase chain reagent - Incorrect. 'R' stands for Reaction.
• Physiological chain reaction - Incorrect. 'P' stands for Polymerase.
• Physiological chain reagent - Incorrect. 'P' stands for Polymerase and 'R' stands for Reaction.

PCR Acronym 

The question asks for the full form of the acronym PCR, which is mentioned alongside Rapid Antigen Test and RT-PCR as diagnostic tools for COVID-19.

PCR is a foundational technique in molecular biology used to amplify (make many copies of) a specific segment of DNA. RT-PCR (Reverse Transcription PCR) is a variation used for RNA viruses like SARS-CoV-2 (the virus causing COVID-19), where the viral RNA is first reverse transcribed into DNA, which is then amplified by PCR.

The acronym PCR stands for:

• P - Polymerase: Refers to the enzyme (DNA polymerase, often Taq polymerase) that synthesizes new DNA strands.
• C - Chain: Refers to the repetitive, cyclical nature of the process where the products of one cycle serve as templates for the next, leading to exponential amplification.
• R - Reaction: Refers to the biochemical process occurring in the test tube.

Therefore, PCR stands for Polymerase Chain Reaction.

Comparing this to the options:

• Polymerase chain reaction - Correct.
• Polymerase chain reagent - Incorrect. 'R' stands for Reaction.
• Physiological chain reaction - Incorrect. 'P' stands for Polymerase.
• Physiological chain reagent - Incorrect. 'P' stands for Polymerase and 'R' stands for Reaction.

Answer 2

The question asks for the full form of the acronym PCR, which is mentioned alongside Rapid Antigen Test and RT-PCR as diagnostic tools for COVID-19. 

PCR is a foundational technique in molecular biology used to amplify (make many copies of) a specific segment of DNA. RT-PCR (Reverse Transcription PCR) is a variation used for RNA viruses like SARS-CoV-2 (the virus causing COVID-19), where the viral RNA is first reverse transcribed into DNA, which is then amplified by PCR.

The acronym PCR stands for:

• P - Polymerase: Refers to the enzyme (DNA polymerase, often Taq polymerase) that synthesizes new DNA strands.
• C - Chain: Refers to the repetitive, cyclical nature of the process where the products of one cycle serve as templates for the next, leading to exponential amplification.
• R - Reaction: Refers to the biochemical process occurring in the test tube.

Therefore, PCR stands for Polymerase Chain Reaction.

Comparing this to the options:

• Polymerase chain reaction - Correct.
• Polymerase chain reagent - Incorrect. 'R' stands for Reaction.
• Physiological chain reaction - Incorrect. 'P' stands for Polymerase.
• Physiological chain reagent - Incorrect. 'P' stands for Polymerase and 'R' stands for Reaction.