Nucleosome
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Q.
The structural unit formed by tight coiling of DNA around the histone octamer is called the ________________.
Nucleosome
Nuclein
Nucleolus
Nucleoid
Q. Nucleosome is
- Satellite DNA
- Double helical DNA
- Intron interrupted DNA
- Negatively charged DNA wrapped around positively charged histone octamer
Q. The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accomodated?
- Through elimination of repetitive DNA
- Deletion of non-essential genes
- DNase digestion
- Coiling of nucleosomes
Q.
Nucleosome contains:
Histone molecules
Nucleoplasmin
Nucleotides
Nuclear pore complex
Q. Histones are responsible for packaging the DNA into a compact structure.
- nucleotides
- proteins
- nucleic acids
- carbohydrates
Q. The structural unit formed by tight coiling of DNA around the histone octamer is called the .
- nucleoid
- nucleosome
- nuclein
- nucleolus
Q. Sort the DNA structures in the increasing order of the complexity.
- Chromatin
- DNA
- Chromosome
- Nucleosome
Q. The association of histone H1 with a nucleosome indicates :
- Transcription is occurring
- DNA replication is occurring
- DNA is condensed into a chromatin fibre
- DNA double helix is exposed
Q.
What are the structures called that give an appearance as ‘beads on a string’ in the chromosomes when viewed under an electron microscope?
- Genes
- Nucleotides
- Nucleosomes
- Base pairs
Q. Viruses that infect plants generally have
- ssRNA
- dsDNA
- ssDNA
- ssRNA or dsDNA