Which of the following is true about chromosome
| 1. | nucleoprotein |
| 2. | 23 pairs in single human diploid cell |
| 3. | Contains primary constriction |
| 4. | All of these |
Disc shaped proteinaceous structure attached to centromere of a chromosome is called
| 1. | Chromocentre |
| 2. | NOR |
| 3. | Chromomere |
| 4. | Kinetochore |
In which of the chromosomes two equal arms are present
| 1. | sub-metacentric chromosome |
| 2. | metacentric chromosome |
| 3. | acrocentric chromosome |
| 4. | telocentric chromosome |
In which of the following chromosomes the centromere is present at terminal position and
hence only one arm is appeared?
| 1. | Metacentric chromosome |
| 2. | Sub-metacentric chromosome |
| 3. | Acrocentric chromosome |
| 4. | Telocentric chromosome |
| List-I | List-II | ||
| A. | F1 Particles | I. | Chromosomes |
| B. | Histones | II. | Cilia |
| C. | Axoneme | III. | Golgi apparatus |
| D. | Cisternae | IV. | Mitochondria |
| 1. | A-II, B-I, C-IV, D-III | 2. | A-IV, B-I, C-II, D-III |
| 3. | A-IV, B-I, C-III, D-II | 4. | A-IV, B-III, C-I, D-II |
Secondary constriction is
| 1. | Non staining region of chromosome |
| 2. | Also called centromere |
| 3. | Found in all chromosomes |
| 4. | Seen in humans only |
Identify the statement that correctly describes the amount of DNA in a typical somatic cell of human body?
| 1. | A single human cell has approximately one metre long thread of DNA distributed among its twenty three (one set) chromosomes. |
| 2. | A single human cell has approximately two metre long thread of DNA distributed among its twenty three (one set) chromosomes. |
| 3. | A single human cell has approximately two metre long thread of DNA distributed among its forty six (twenty three pairs) chromosomes. |
| 4. | A single human cell has approximately one metre long thread of DNA distributed among its forty six (twenty three pairs) chromosomes. |
| 1. | The chromosome shown is metacentric and X is centromere |
| 2. | The chromosome shown is metacentric and X is satellite |
| 3. | The chromosome shown is sub-metacentric and X is centromere |
| 4. | The chromosome shown is sub-metacentric and X is satellite |
Few chromosome have non-staining secondary constrictions at a constant location, also known as :-
1. Cristae
2. Satellite
3. Kinetochores
4. Hub
Histones and non-histones are
| 1. | basic proteins associated with the DNA |
| 2. | acidic proteins associated with the DNA |
| 3. | basic proteins associated with the RNA |
| 4. | acidic proteins associated with the RNA |