iGET

Biotechnology - MCQ Practice Questions

Practice free Biotechnology multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.

260 questions | 100% Free

Q.61Easy

What is the primary function of dNTPs in PCR?

Q.62Medium

Real-time PCR (qPCR) differs from conventional PCR in that it:

Q.63Medium

Which of the following is a common application of multiplex PCR?

Q.64Medium

In reverse transcription PCR (RT-PCR), which enzyme is critical for the first step?

Q.65Medium

What is the primary advantage of digital PCR (dPCR) over conventional qPCR?

Q.66Medium

AFLP (Amplified Fragment Length Polymorphism) technology combines which two DNA techniques?

Q.67Medium

In forensic applications, why are microsatellites (STRs) preferred over SNPs for individual identification?

Q.68Hard

What is the primary principle of High-Resolution Melting (HRM) analysis in qPCR?

Q.69Hard

In competitive PCR, what is the role of the internal control DNA?

Q.70Hard

Which PCR variant is most suitable for detecting point mutations in genomic DNA?

Q.71Hard

In the context of DNA barcoding for species identification, which gene region is commonly used for plants?

Q.72Medium

What is the primary limitation of PCR when amplifying GC-rich sequences?

Q.73Hard

In SNP genotyping using TaqMan chemistry, what is the function of MGB (Minor Groove Binder)?

Q.74Hard

Which DNA amplification technique is used to amplify sequences adjacent to a known sequence boundary?

Q.75Medium

In the diagnosis of genetic disorders, why is allele-specific PCR (AS-PCR) preferred for detecting known mutations?

Q.76Medium

What is the primary advantage of using nested PCR in pathogen detection?

Q.77Medium

In whole genome amplification (WGA) using multiple displacement amplification (MDA), which enzyme is used?

Q.78Easy

Which enzyme is primarily responsible for extending DNA strands during the elongation phase of PCR?

Q.79Easy

In a standard PCR cycle, at what temperature is the DNA double helix typically denatured?

Q.80Medium

Which of the following statements about primer design for PCR is INCORRECT?