- 1(current)
Q. No.Identify the incorrectly matched pair:
| 1. | Primary constriction | Satellite chromosome |
| 2. | Cilia/flagella | 9 + 2 arrangement of microtubules |
| 3. | Centriole | 9 + 0 arrangement of microtubules |
| 4. | Lysosomes | Acid hydrolases |
Subtopic: Nucleus: Chromosomes |
86%
From NCERT
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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. |
Subtopic: Nucleus: Chromosomes |
83%
From NCERT
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How many of the given type of chromosome are matched with the correct location of the centromere?
1. 1
2. 2
3. 3
4. 4
| I. | Metacentric - Centromere in the middle |
| II. | Acrocentric - Centromere near one end |
| III. | Telocentric - Centromere at the very end |
| IV. | Submetacentric - Centromere slightly off-center |
2. 2
3. 3
4. 4
Subtopic: Nucleus: Chromosomes |
89%
From NCERT
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How many of the given statements are correct?
1. 0
2. 1
3. 2
4. 3
| A: | The eukaryotes include only multicellular organims. |
| B: | Animal cells have centrioles which are absent in almost all plant cells; Spindle formation is seen in animal seen which is absent in all plant cells. |
| C: | The isolated lysosomal vesicles have been found to be very rich in almost all types of oxidative enzymes. |
| D: | Like chloroplasts, the mitochondria are also double membrane bound and easily observed under the microscope as they are large. |
| E: | In case of acrocentric chromosome the centromere is situated close to its end forming one extremely short and one very long arm, whereas the telocentric chromosome has a terminal centromere. |
2. 1
3. 2
4. 3
Subtopic: Introduction to Cell | Prokaryotic Cell Organisation | Plastids | Lysosomes | Nucleus | Nucleus: Chromosomes |
From NCERT
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