126. Which one of the following is the most accurate statement regarding giardiasis? A. The drug of choice for giardiasis is chloroquine. B. Giardia lamblia produces an enterotoxin that increases […]
Tag: dbt jrf pyq
Tag: dbt jrf pyq
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Understanding MacConkey Agar: Selectivity and Bacterial Growth
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- April 14, 2025
- 8 Comments
125. Given below are two statements: Statement I: MacConkey agar is a media used for recovery of Gram positive bacteria from mixed bacterial culture. Statement II: The bile salts and […]
What Gives Beetroot Its Red Color? Exploring the Pigments
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- April 14, 2025
- 12 Comments
124. The red color of beetroot is due to the presence of: A. Betalains B. Anthocyanins C. Flavonoids D. Carotenoids Detailed Explanation: The red color of beetroot comes from a […]
Constants in Enzymatic Reactions: What Remains Unchanged?
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- April 14, 2025
- 9 Comments
123. Which one of the following will NOT change upon adding an enzyme to a chemical reaction or changing the concentration of reactants or products? A. ∆𝐺° B. 𝐾𝑒𝑞 C. […]
Cell Cycle-Based Cell Separation: The Power of Counterflow Centrifugal Elutriation
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- April 14, 2025
- 14 Comments
122. Which one of the following cell separation techniques allows cells from different stages of the cell cycle to be separated simultaneously with minimal perturbation to their physiology? A. counterflow […]
Role of 2′, 3′ Dideoxy-ribonucleoside Triphosphates in DNA Sequencing
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- April 14, 2025
- 11 Comments
121. Which one of the molecular processes utilize 2′, 3′ Dideoxy-ribonucleoside triphosphates? A. DNA synthesis for primers. B. Okazaki fragment formation during lagging strand synthesis. C. DNA sequencing by synthesis. […]
Glycosylation of Proteins in the ER: Where Do Glycan Moieties End Up?
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- April 14, 2025
- 11 Comments
120. Proteins are glycosylated in the endoplasmic reticulum. In the final structures, the glycan moieties are typically present: A. on the surface of these proteins. B. in the core of […]
Resolution Limits of Conventional Light Microscopy: What Can We Really See?
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- April 14, 2025
- 12 Comments
119. A conventional light microscope allows us to magnify cells up to 1000 times and to resolve details as small as ________. A. 200 μm B. 200 nm C. 0.2 […]
Role and Location of the TATA Box in Transcription Initiation
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- April 14, 2025
- 12 Comments
118. TATA box involved in the initiation of transcription is located in the: A. Promoter region B. Enhancer region C. Exon region D. Intron region Detailed Explanation: The TATA box […]
Effects of Serine-to-Aspartic Acid Mutation in Ligand Gated Channels
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- April 14, 2025
- 10 Comments
117. The ligand binding domain of a ligand gated channel (LGC) has a serine residue, phosphorylation of which is essential for ligand binding. By site directed mutagenesis it was replaced […]


