Biotechnology - MCQ Practice Questions

Which PCR variant is specifically designed for amplifying and detecting microRNA (miRNA) targets in clinical samples?

In RAPD-PCR (Random Amplified Polymorphic DNA), what is the primary application in agricultural biotechnology?

During DNA amplification using PCR, if the initial template has 2 copies, approximately how many copies will be present after 30 cycles (assuming 100% efficiency)?

What is the main disadvantage of using standard Taq polymerase compared to high-fidelity polymerases like Pfu in PCR?

In multiplex PCR, what is the critical challenge that must be addressed when designing multiple primer sets?

Which DNA technology technique combines random DNA fragmentation with sequence-independent single-primer amplification (SISPA)?

In droplet digital PCR (ddPCR), how does partitioning of the sample improve quantification accuracy compared to conventional qPCR?

For amplifying extremely long DNA fragments (>10 kb), which specialized PCR technique is most appropriate?

In CRISPR-Cas9 gene editing, what is the function of the PAM (Protospacer Adjacent Motif) sequence?

Which DNA technology is most suitable for detecting chromosomal abnormalities like deletions and duplications at the genomic level?

In next-generation sequencing (NGS) library preparation, what is the primary purpose of adapter ligation in DNA technology workflows?

When designing a TaqMan probe for qPCR, what is the relationship between probe length and specificity in target detection?

In forensic DNA analysis using STR markers, what advantage do newer SNP-based methods provide over traditional STR typing for 2024-25 investigations?

Which PCR-based technique is specifically used to amplify and sequence unknown DNA flanking regions of known sequences?

In GWAS (Genome-Wide Association Studies) using DNA microarrays, what statistical principle is applied to identify significant SNP-trait associations?

What is the primary principle behind whole exome sequencing (WES) in identifying disease-causing mutations?

In the context of DNA barcode libraries for species identification in 2024-25, which universal marker is most commonly used for plants?

What is the optimal annealing temperature range for most PCR reactions?

Which thermostable DNA polymerase is most commonly used in standard PCR?

In a typical PCR cycle, DNA denaturation occurs at approximately which temperature?