Blastn

Starting from the sequencing primer, what is the sequence of this DNA sample? (write the sequence direction!)

What are the types of web BLAST? (more than one answers is possible)

• nucleotide BLAST

• blastn

• blastx

• protein BLAST

• primer BLAST

What is the primary purpose of the BLASTn tool in bioinformatics?

• To compare nucleotide sequences

• To compare protein sequences

• To predict protein structure

• To analyze gene expression

Which of the following databases is commonly used with BLASTn for nucleotide sequence comparison?

• GenBank

• PDB

• UniProt

• KEGG

In the context of BLASTn, what does the term 'E-value' represent?

• The number of expected hits of similar quality that could be found just by chance

• The exact match score between two sequences

• The evolutionary distance between two sequences

• The error rate in sequence alignment

Which of the following is a key feature of BLASTn?

• It aligns nucleotide sequences

• It aligns protein sequences

• It predicts protein folding

• It models metabolic pathways

What type of algorithm does BLASTn use for sequence alignment?

• Heuristic

• Dynamic programming

• Greedy

• Backtracking

Which of the following is a real-world application of BLASTn?

• Identifying unknown pathogens

• Designing chemical compounds

• Simulating climate change

• Modeling economic trends

What is the significance of a low E-value in a BLASTn search result?

• It indicates a highly significant match

• It indicates a poor match

• It suggests a need for further analysis

• It shows a high error rate

How does BLASTn differ from BLASTp?

• BLASTn compares nucleotide sequences, while BLASTp compares protein sequences

• BLASTn compares protein sequences, while BLASTp compares nucleotide sequences

• BLASTn is faster than BLASTp

• BLASTn is used for protein structure prediction