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Doctors Medicines MCQs Q&A

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Consider the following statements about Antisense RNA 1. Antisense RNA is a single stranded RNA. 2. Antisense RNA is not related to RNA interference. Which of the above statements is/are correct?
Consider the following statements.
1. The smallest RNA is t RNA.
2. The most abundant RNA of cell is r RNA.
3. DNA can be formed over RNA through reverse transcriptase.
Which of the statements given above are false?
Match the following Types of mechanism Motion achieved P. Scott Russel mechanism 1. Intermittent motion Q. Geneva mechanism 2. Quick return motion R. Off set slider crank mechanism 3. Simple harmonic motion S. scotch Yoke mechanism 4. Straight line motion
Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism
জীবকোষে RNA হচ্ছে- i. (m RNA) ii. (n RNA) iii. (t RNA) নিচের কোনটি সঠিক?
Consider the following statements : 1. Micro RNA (miRNA) is an exogenous double-stranded RNA uptaken by cells, while small interfering RNA (siRNA) is an endogenous single-stranded RNA. 2. miRNA mainly serves as a drug target, therapeutic agent and biomarker tool while siRNA mainly serves as a therapeutic agent. Which of the following statements given above is/are correct?
Which of the following statements is/are correct about COVID-19? 1. It is an RNA virus with ribonucleic acid (RNA) as its genetic material leading to mutations. 2. RNA viruses are single-stranded. 3. RNA replication takes place in the cytoplasm.
Consider the following statements about the genetic materials DNA and RNA: DNA chemically is less reactive and structurally more stable as compared to RNA. DNA is better for the transmission of genetic information as compared to RNA. Both DNA and RNA can mutate. Which of the statements given above are correct?
Proofreading activity existing universally in synthetase as a double sieve mechanism.
Match list I with list II List I List II A. Pantograph 1. Scotch yoke mechanism B. Single slider crank 2. Double lever mechanism C. Double slider crank chain 3. Tchebicheff’s mechanism D. Straight line motion mechanism 4. Double crank 5. Hand pump