MCQ Bank

DNA stores the genetic information used to make proteins, while RNA, particularly mRNA, carries the information from DNA to the ribosome for protein synthesis. Thus, the statement reverses the main roles of DNA and RNA.

BIF101 Final Term AI Solved

Q21

Central Dogma has following steps:

A) None
B) Transcription from DNA to RNA and Translation from mRNA to Protein
C) Both
D) DNA->RNA->Protein

AI Explanation

The central dogma describes the flow of genetic information from DNA to RNA through transcription and from RNA to protein through translation. Therefore, option B correctly states both major steps.

BIF101 Final Term AI Solved

Q22

DNA sends the information to cell via mRNA and that sequence the amino acids according to coded information and protein structure is formed and that protein forms a cell.

A) True
B) False
C)
D)

AI Explanation

DNA stores genetic information, which is transcribed into mRNA. The mRNA sequence is then translated into an amino acid sequence that folds into a functional protein, although proteins do not by themselves form an entire cell.

BIF101 Final Term AI Solved

Q23

Biologists can sequence the whole genome with the bioinformatics tool i.e.

A) Next Genome Sequencing (NGS)
B) Next Generation Sequencing (NGS)
C) Next Gene Sequencing (NGS)
D) None

AI Explanation

Next Generation Sequencing (NGS) refers to high-throughput sequencing technologies capable of sequencing large amounts of DNA. These technologies can be used to sequence entire genomes efficiently.

BIF101 Final Term AI Solved

Q24

DNA sends the information to cell via tRNA and that sequence the amino acids according to coded information and protein structure is formed and that protein forms a cell.

A) True
B) False
C)
D)

AI Explanation

DNA sends genetic information to the ribosome primarily through mRNA, not tRNA. tRNA instead carries specific amino acids to the ribosome during translation according to the mRNA codons.

BIF101 Final Term AI Solved

Q25

____________ is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA).

A) Translation
B) Replication
C) Transcription
D) Reproduction

AI Explanation

Transcription is the process in which genetic information in DNA is copied into messenger RNA (mRNA). Translation then uses the mRNA information to produce a protein.

BIF101 Final Term AI Solved

Q26

Stop Codon is/are:

A) UAG
B) UGA
C) UAA
D) All

AI Explanation

UAG, UGA, and UAA are all stop codons in the standard genetic code. They signal termination of protein translation.

BIF101 Final Term AI Solved

Q27

Bioinformatics helps us to understand the layer folding of proteins that how they are proceed and helps us to know that how protein _____________ with each other and how a drug can affect or stimulate a protein.

A) Interact
B) None
C) Behave
D) Compare

AI Explanation

Bioinformatics can help study protein structure, folding, and molecular interactions. Understanding how proteins interact is important for predicting how drugs may affect or regulate their activity.

BIF101 Final Term AI Solved

Q28

Bioinformatics helps us to understand the whole system of a single cell, in that cell how organelles, gene, proteins and metabolites are interconnected in a single unified system (cell).

A) False
B) True
C)
D)

AI Explanation

Systems biology and bioinformatics can be used to study how genes, proteins, metabolites, and cellular organelles are interconnected. This helps researchers understand the cell as an integrated biological system.

BIF101 Final Term AI Solved

Q29

________________ is a hereditary material present in all living organisms

A) DNA
B) RNA
C) Nucleotide
D) Protein

AI Explanation

DNA is the primary hereditary material in almost all living organisms and stores genetic information. RNA serves important genetic and functional roles but is not the primary hereditary material in most organisms.

BIF101 Final Term AI Solved

Q30

The central dogma outlines the flow of genetic information during growth and division of the cells.

A) True
B) False
C)
D)

AI Explanation

The central dogma describes the flow of genetic information, primarily from DNA to RNA to protein. This process is fundamental to cell growth, function, and division.

BIF101 Final Term AI Solved

Q31

DNA molecule make RNA and RNA make the protein and DNA differ from RNA in nature due to sugar and nitrogenous base.

A) False
B) True
C)
D)

AI Explanation

DNA is transcribed into RNA, and RNA can be translated into protein. DNA and RNA differ in their sugar and one nitrogenous base: DNA contains deoxyribose and thymine, while RNA contains ribose and uracil.

BIF101 Final Term AI Solved

Q32

DNA molecule although is double stranded and RNA is single stranded but there is difference in sugar composition and in one nitrogenous base i.e., in DNA Thymine present while in RNA Uracil present.

A) False
B) True
C)
D)

AI Explanation

DNA is generally double-stranded, whereas RNA is generally single-stranded. DNA contains thymine, while RNA contains uracil, and they also differ in their sugar components.

BIF101 Final Term AI Solved

Q33

Molecule of DNA contains only four base pairs (A, T, C, and G) which are repeated thousands of time and Adenine “A” pairs with Thymine “T” by ______ Hydrogen bonding, While Cytosine “C” binds with Guanine “G” by ______ Hydrogen bonding.

A) Two, Four
B) Three, Two
C) Three, Four
D) Two, Three

AI Explanation

Adenine pairs with thymine through two hydrogen bonds. Cytosine pairs with guanine through three hydrogen bonds.

BIF101 Final Term AI Solved

Q34

AUG or ATG is the ____________.

A) Stop Codon
B) Start Codon
C)
D)

AI Explanation

AUG in RNA and ATG in DNA correspond to the start signal for protein-coding sequences. AUG is the standard start codon for translation and codes for methionine.

BIF101 Final Term AI Solved

Q35

During cell division each daughter cell receives a copy of the genome of the child cell.

A) False
B) True
C)
D)

AI Explanation

During cell division, each daughter cell normally receives a copy of the cell's genome. This ensures that genetic information is passed on to the new cells.

BIF101 Final Term AI Solved

Q36

In __________ we can identify the deficiency of low proteins in any patient’s body tissue

A) Genomics
B) None
C) Transcriptomic
D) Proteomics

AI Explanation

Proteomics is the study of proteins, including their abundance and functions in cells and tissues. It can help identify abnormal or deficient protein levels associated with disease.