DNA multiplication is called

Important Questions on Cell Cycle and Cell Division

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

A mixture of equal numbers of fast and slow dividing cells is cultured in medium containing a trace amount of radioactively labeled thymidine for one hour. The cells are then transferred to regular (unlabeled) medium. After 24hrs of growth in regular media

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Which of the following statements about nucleosome is true?

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Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Considering the average molecular mass of a base to be 500 Da, what is the molecular mass of double stranded DNA of 10 base pairs?

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Which one of the following has phosphoric acid anhydride bonds?

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

In the 'S' phase of the cell cycle:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Melting temperature for double-stranded DNA is the temperature at which 50% of the double-stranded molecules are converted into single stranded molecules. Which one of the following DNA will have the highest melting temperature?

MEDIUM

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

What is the length of human DNA containing $6.6\times {10}^9 bp$ ?

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Semiconservative replication of DNA was first demonstrated in

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Which phase occupies the maximum part of cell cycle?

MEDIUM

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

The molecular weight of E coil. DNA is $3.1\times {10}^9\mathrm{ }\mathrm{g}/\mathrm{m}\mathrm{o}\mathrm{l}$. The average molecular weight of the nucleotide pair is $660 \mathrm{g}/\mathrm{mol}$ and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:

MEDIUM

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

The sequences of four DNA molecules are given. Which one of these DNA molecules will have the highest melting temperature $\left(T_m\right)$?

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Cells in G₀ phase:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

The association of histone H₁ with a nucleosome indicates:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Given the fact that histone binds DNA, it should be rich in:

MEDIUM

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

During DNA replication, Okazaki fragments are used to elongate:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

E. coli has only $4.6\times {10}^6$ base pairs and completes the process of replication within $18$ minutes; then the average rate of polymerisation is approximately:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

If the distance between two consecutive base pairs is $0.34 \mathrm{nm}$ and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6\times {10}^9\mathrm{bp}$ bp, then the length of the DNA is approximately

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Taylor conducted the experiments to prove the semiconservative mode of chromosome replication on:

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4 C level if the initial amount is denoted as 2C?

EASY

Biology>Cell: Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

The correct sequence of phases of cell cycle is: