Free MCQs & Online Quiz Practice for Exams

Q: An individual has an additional sex chromosome; which syndrome does it refer to: (2010 ETEA)

A) Down’s syndrome

B) Turner’s syndrome

C) Jacob’s syndrome

D) Klinefelter’s syndrome

Q: The number of chromosomes of tobacco during replication are: (2010 ETEA)

A) 43

B) 29

C) 46

D) 48

Q: Which sequence of nucleotides would bond with the DNA sequence TATGA: (2010 ETEA)

A) AUAGA

B) ATACA

C) UAUGA

D) ATACT

Q: The number of nitrogenous bases common in both DNA and RNA are: (2010 ETEA)

A) Two

B) Three

C) Five

D) Four

Q: Replication of DNA occurs in: (2012 ETEA)

A) Interphase

B) Prophase

C) Metaphase

D) Anaphase

Q: Replication progresses at a rate of about 50 base pairs per second in: (2013 ETEA)

A) Bacteria

B) Virus

C) Eukaryote

D) All of the above

Q: Avery, Macleod and McCarty repeated the Griffith experiment in the year: (2013 ETEA)

A) 1869

B) 1928

C) 1944

D) 1952

Q: Both DNA and RNA are synthesized by the process of: (2014 ETEA)

A) Transcription

B) Polymerization

C) Translation

D) PCR

Q: Gene and chromosomes show parallel behavior except: (2014 ETEA)

A) Number

B) Inheritance

C) Heredity

D) Composition

Q: In eukaryotes, DNA replication proceeds at the rate of: (2014 ETEA)

A) 50 base pairs/sec

B) 40 base pairs/sec

C) 30 base pairs/sec

D) 20 base pairs/sec

Q: Which of the following is an enzyme-lacking disease: (2014 ETEA)

A) PKU

B) Alkaptonuria

C) Anuria

D) Diurea

Q: The particular array of chromosomes that an individual possesses is called: (2014 ETEA)

A) Genotype

B) Phenotype

C) Karyotype

D) Genome

Q: If the coding sequence on DNA is AATTGCT, the sequence in the mRNA will be: (2014 ETEA)

A) AAUUCGT

B) UUAACGA

C) TTAACGA

D) UUTTCGT

Q: Replication of DNA occurs during: (2014 ETEA)

A) Interphase

B) Prophase

C) Metaphase

D) Anaphase

Q: A specific nucleotide sequence on DNA molecule to which RNA polymerase attaches to initiate transcription is called: (2014 ETEA)

A) Polygene

B) Genome

C) Promoter

D) Pleiotropy

Q: In mitochondria, UGA codon acts to specify: (2015 ETEA)

A) Arginine

B) Glutamic acid

C) Tryptophan

D) Valine

Q: Stop codons are: (2016 ETEA)

A) UAA UAG UGA

B) UGC UCG AAA

C) UUG UCG UCA

D) UAA UGC UCA

Q: The mutation that occurs in an egg or sperm cell, or just after fertilization, is called: (2016 ETEA)

A) New

B) De novo

C) Drift

D) Both A and B

Q: DNA polymerase adds nucleotides to the 3′ end of the primer, so the direction of replication will be: (2017 ETEA)

A) 5' to 3'

B) 3' to 5'

C) 3' end of primer to 3' end of template

D) 3' end of template to 3' end of primer

Q: The experiments by Hershey and Chase helped confirm that DNA was the hereditary material because: (2017 ETEA)

A) Radioactive phage found in pellet

B) Radioactive phage found in supernatant

C) Radioactive sulphur found inside cell

D) Radioactive phosphorus found inside cell