MCQ Bank
In Swiss-Prot, what does a higher value of GMQE (near 1) indicate:
- A) Decreased reliability
- B) Decreased flexibility
- C) Higher reliability
- D) Higher flexibility
What is the main function of UniProt Knowledgebase (UniProtKB)?
- A) To store metagenomic and environmental sequences
- B) To provide comprehensive protein sequences and functional information
- C) To maintain a vast collection of bioinformatics databases and services
- D) To provide a reference set of clusters for all UniProtKB sequences
In UniProt, the database describing the complete set of proteins for a species is called the:
- A) UniProt Knowledgbase
- B) Proteome
- C) Proteomics
- D) Sequence Archive
Bootstrap value for generating a phylogenetic tree recommended by the literature is
- A) 1000
- B) 300
- C) 800
- D) 500
In MEGA 11, you can change font size of --------- phylogenetic tree.
- A) All these
- B) Bootstrap values
- C) Branch lengths
- D) Tax
A phylogenetic tree shows evolutionary relationships among …………. that have a common ancestor.
- A) All these
- B) Species
- C) Genomes
- D) Genes
What does the amino acid composition describe in Protparam results?
- A) The frequency of each amino acid in the protein sequence
- B) The isoelectric point of the protein
- C) The molecular weight of the protein
- D) The secondary structure of the protein
Computer structure modes are those models which are generate by
- A) Computer algorithms
- B) Manually by humans
- C) Databases
- D) Experiments
Which one of the following statements is not a step of ClustalW algorithm?
- A) Convert the sequence similarity
- B) Compute the multiple sequence alignments for all sequences
- C) Progressively align the sequence together into each branch point of the guide tree
- D) Construct a tree for the order in which pairs of sequences are to be aligned and combined with previous alignments
Nucleotide BLAST compares:
- A) Protein sequences against nucleotide databases
- B) Protein sequences against protein databases
- C) DNA sequences against protein databases
- D) Nucleotide sequences against nucleotide databases
What type of sequences can be found in UniMES?
- A) Metagenomic and environmental sequences
- B) None of these
- C) Protein sequence and functional information
- D) Reference set of clusters for all UniProtKB sequences
The protein is positively charged when its pH is:
- A) Below its isoelectric point (pI)
- B) Equal to its isoelectric point (pI)
- C) At pH 7
- D) Above its isoelectric point (pI)
Protein BLAST compares:
- A) Nucleotide sequences against nucleotide databases
- B) Protein sequences against protein databases
- C) Protein sequences against nucleotide databases
- D) DNA sequences against protein databases
ClustalW, used for Multiple Sequence Alignment, was developed by:
- A) Thompson, Higgins & Gibson
- B) Thompson, Higgins & Richard
- C) Thompson, Durbin & Gibson
- D) Durbin, Higgins & Richard
In RCSB PDB, the gallery view displays:
- A) Graphical Representations of Proteins
- B) Proteins in a Table Format
- C) Brief Introductions to Proteins
- D) Protein 3D Structures and IDs
_______ is a recently proposed scale for measuring the structural similarity between two structures
- A) Z-score
- B) TM-score
- C) C-score
- D) L-score
Sequence Alignment helps scientists
- A) All of these
- B) To trace out evolutionary relationship
- C) To infer the functions of newly synthesized genes
- D) To predict new members of gene families
Amino acid composition denotes ................... of individual residues of a protein.
- A) Total number
- B) Strength
- C) Concentration
- D) Charge
ClustalW, used for Multiple Sequence Alignment, was developed in:
- A) 1996
- B) 1993
- C) 1995
- D) 1994
TM-score _____ means a randomly selected protein pair with the gapless alignment taken from PDB
- A) <0.14
- B) <0.17
- C) <0.15
- D) <0.18