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Which of the following enzyme is not produced by E. coli during lactose catabolism ?
E. coli produces β-galactosidase, thiogalactoside transacetylase, and lactose permease during lactose catabolism. Lactose dehydrogenase is not involved in this process. Thus, option o3 is the correct answer.
Which is the incorrect statement regarding HGP ?
The Human Genome Project (HGP) is not an Indian scientific research project. It was an international research project with the aim of mapping all the genes of the human genome. Thus, option o1 is the correct answer as it is the incorrect statement.
Humans have approximately times more genes than E.coli
Humans have approximately 50 times more genes than E. coli. E. coli has about 4,000 genes, while humans have around 20,000-25,000 genes. Thus, option o4 is the correct answer.
Select the correct answer / answers from the following
DNA replication in eukaryotes is
In eukaryotes, DNA replication is bidirectional and has multiple origins of replication. This allows the large quantity of DNA to be replicated quickly and accurately.
How many nucleotides make one okazaki fragments in eukaryotes ?
Eukaryotes typically have Okazaki fragments that are 100 to 200 nucleotides long, whereas fragments in prokaryotic E. coli can be 2,000 nucleotides long. The reason for this discrepancy is unknown. Each eukaryotic chromosome is composed of many replicating units of DNA with multiple origins of replication.
Which of the following enzymes help in the process of formation of phosphodiester bond during reverse transcription ?
RNA-dependent DNA polymerase, also known as reverse transcriptase, is the enzyme that synthesizes DNA from an RNA template. This process involves the formation of phosphodiester bonds.
The two strands of a DNAmolecule are separted and one of them is analysed for its A+ T / G + C ratio, This is found to be 0.2 What is the A+ T / G + C ratio of the other strand
chargaffs rule of complementarity of bases
DNA replication in lagging strand of most of the eukaryotic organis ms is
DNA replication in the lagging strand of eukaryotic organisms is semiconservative but discontinuous. This means that each new DNA molecule consists of one old strand and one new strand (semiconservative), and replication on the lagging strand occurs in short segments called Okazaki fragments, which are later joined together (discontinuous).
How many bases consist in an average gene ?
An average gene consists of about 3000 bases. This is a general estimate and can vary widely among different genes and organisms.
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