Cell Cycle, Cell Division and Structure of Chromosom...
Cell Cycle, Cell Division and Structure of Chromosomes II
Questions
What are the chromosomes with more than two chromatids called?
- Lampbrush chromosomes
- Polytene chromosomes
- Polycentric chromosomes
- Metacentric chromosomes
- None of these
Which of the following structures is found at primary constriction of chromosomes?
- Centromere
- Chromosome
- Centrosome
- Centrosphere
- Centriole
Which of the following are the major amino acids in histone protein of chromosomes?
- Histidine and tryptophan
- Arginine and lysine
- Tyrosine and tryptophan
- Cystine and tyrosine
- Histidine and tyrosine
What is the haploid set of inherited chromosomes in nucleus of a species called?
- Genome
- Genotype
- Gene pool
- Allele
- Gene
The nucleus that involves duplication of chromosomes but shows no cytokinesis is called __________.
- restitution nucleus
- polyploidy
- aneuploidy
- euploidy
- endomitosis
What is the increase in number of chromosomes without the division of the nucleus called?
- Endoploidy
- Aneuploidy
- Endoplasma
- Free nuclear division
- Polyploidy
Which of the following is a function of centromere?
- DNA duplication
- Poleward movement of chromatids
- Cytoplasmic cleavage
- Chromosome segregation
- DNA replication
Which type of chromosome(s) is/are not found in human beings?
- Submetacentric
- Metacentric
- Acrocentric
- Telocentric
- Both acrocentric and metacentric
Which of the following are the L-shaped chromosomes?
- Telocentric
- Submetacentric
- Sex chromosomes
- Acrocentric
- Metacentric
Nucleolus is formed from __________.
- Nucleus
- Mitochondria
- SAT chromosome
- DNA
- Polytene chromosome
The thread constituting a chromosome is known as
- chromatin
- chromonema
- chromotophore
- chromomere
- chromophore
Which of the following synthesises nucleoprotein?
- Ribosomes
- Nucleoplasm
- Nucleolus
- r - RNA
- DNA
Which of the following helps to facilitate the material exchange through nucleopores?
- Lamina propria
- Lipid layer
- Cell membrane
- Nucleoplasmin
- Nucleolus
A cell having large nucleus in proportion to cytoplasm is perhaps
- active
- dead
- dividing
- dehydrated
- inactive
Who gave the first satisfactory account of the structure of nucleus and its mode of division?
- Robert Brown
- Watson and Crick
- Schleiden and Schwann
- Strasburger
- Robert Hooke
The chromosomes that remain condensed during interphase are called ________________.
- euchromosomes
- polytene chromosomes
- hetero chromosomes
- mega chromosomes
- meta chromosomes
From where does the nuclear membrane derive?
- ER
- Plasma membrane
- Mitochondria
- Nucleoplasm
- Cytoplasm
Nucleus is lost secondarily in
- Sperms
- Mature egg
- RBC
- WBC
- Cheek cell
Which of the following terms is used for expressing the phenotypic characters of chromosomes at mitotic metaphase?
- Idiogram
- Genotype
- Karyotype
- Phenotype
- Genome
If a chromosome has a centromere present in diffused condition along its length, it is called
- acentric
- holocentric
- telocentric
- metacentric
- dicentric