Exam question with correct answers (100%
verified answers) plus rationales Q &A
2026 INSTANT DOWNLOAD PDF
1. What is the primary focus of bioinformatics?
A. Clinical surgery
B. Biological data analysis using computation
C. Chemical synthesis
D. Veterinary medicine
Answer: B
Rationale: Bioinformatics applies computational tools to analyze biological data
such as DNA, RNA, and protein sequences.
2. Which file format is commonly used for DNA sequences?
A. JPEG
B. FASTA
C. MP3
D. DOCX
Answer: B
Rationale: FASTA format stores nucleotide or protein sequences in a text-based
format.
3. What does BLAST stand for?
,A. Basic Local Alignment Search Tool
B. Biological Linear Analysis Sequence Test
C. Binary Local Assembly System Tool
D. Basic Ligation Alignment Sequence Tracker
Answer: A
Rationale: BLAST is used to compare biological sequences.
4. Which molecule carries genetic information?
A. Lipids
B. DNA
C. ATP
D. Glucose
Answer: B
Rationale: DNA stores hereditary genetic information.
5. RNA primarily functions in:
A. Energy storage
B. Protein synthesis
C. Cell structure
D. Fat metabolism
Answer: B
Rationale: RNA plays a key role in translating genetic code into proteins.
6. Which database stores protein sequences?
A. GenBank
B. PDB
C. PubMed
D. KEGG
, Answer: B
Rationale: Protein Data Bank (PDB) stores 3D protein structures.
7. What is sequence alignment used for?
A. Cooking proteins
B. Comparing DNA/protein sequences
C. Cleaning data
D. Encrypting files
Answer: B
Rationale: It identifies similarities between biological sequences.
8. What is a genome?
A. A single protein
B. Entire genetic material of an organism
C. A cell organelle
D. A lipid molecule
Answer: B
Rationale: A genome contains all DNA in an organism.
9. Which tool is used for multiple sequence alignment?
A. Photoshop
B. ClustalW
C. Excel
D. Word
Answer: B
Rationale: ClustalW aligns multiple biological sequences.
10. What is a codon?