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Question : Histones are
A. Positively charged and basic amino acids
B. Positively charged and acidic proteins
C. Negatively charged and basic proteins
D. Absent in bacteria
Question : Which non-radioactive isotope was used by Messelson and Stahl in their experiment?
A. P32
B. S35
C. N15
D. None
Question : Human Genome Project led to the development of
A. Biotechnology
B. Bioinformatics
C. Biosystematics
D. Bioengineering
Question : In eukaryotes, RNA II facilitates transcription of
A. rRNA
B. mRNA
C. hnRNA
D. tRNA
Question : The process of RNA splicing shows the dominance of
A. RNA world
B. DNA world
C. Microbial world
D. Protein world
Question : The gene sequence that codes for proteins are
A. Exons
B. Introns
C. Intervening sequences
D. Control regions
Question : The primary control of gene expression takes place at the level of
A. Translation
B. Replication
C. Transcription
D. None
Question : What will the amount of guanine in a DNA if the total amount of adenine and thiamine in the DNA is 45%?
A. 45%
B. 65%
C. 27.5%
D. 22.3%
Question : A molecule that acts as a genetic material must fulfil the following traits, except
A. It should be structurally and chemically unstable
B. It should have the ability to generate its replica
C. It should facilitate slow changes necessary for evolution.
D. It should be able to express itself in the form of Mendelian characters.
Question : Spliceosomes are absent in the cells of
A. Plants
B. Animals
C. Bacteria
D. Fungi
Question : The amino acid coded by 3 codons is
A. Proline
B. Isoleucine
C. Tryptophan
D. Serine
Question : The eukaryotic replication of DNA is
A. Bidirectional with many origins
B. Unidirectional with many origins
C. Bidirectional with a single origin
D. Unidirectional with a single origin
Question : Which enzyme is not produced during lactose catabolism by E.coli?
A. ðœ·-galactosidase
B. Lactose Permease
C. Thiogalactoside transacetylase
D. Lactose dehydrogenase
Question : In lac-operon, which protein is not regulated by the repressor?
A. Galactosidase
B. Lactose Permease
C. Tryptophan
D. Transacetylase
Question : The anticodon of initiation codon for protein synthesis is
A. UUU
B. AUG
C. UAC
D. CAU