Q. No.On what basis chromosomes have been divided into four classes.
1. position of centromere
2. position of primary constriction
3. number of kinetochores
4. Both A and B
In which of the chromosomes two equal arms are present
(1)sub-metacentric chromosome
(2)metacentric chromosome
(3)acrocentric chromosome
(4)telocentric chromosome
Which of the following chromosome is absent in human beings
1. sub-metacentric chromosome
2. metacentric chromosome
3. acrocentric chromosome
4. telocentric chromosome
Satellite body is formed in chromosome because of
1. primary constriction
2. secondary constriction
3. Centromere
4. Both A and C
The enzyme present in lysosomes belong to the class ______ & acidic condition inside is maintained by ______
| 1. | Oxidoreductases, pumping protons |
| 2. | Hydrolases, secretion of acids |
| 3. | Hydrolases, pumping of protons |
| 4. | Lyases, removal of protons |
Which of the following statement is not concerned with fluid mosaic model of plasma membrane?
| 1. | Phospholipid forming a water resistant barrier |
| 2. | Glycocalyx at inner surface |
| 3. | Mosaic pattern of proteins |
| 4. | More extrinsic protein at inner surface |
Which of the following is not a microtubular organelle?
1. Centriole
2. Cilia
3. Basal body
4. Dalton complex
Select the incorrect statement with respect to prokaryotic cells
| 1. | Cytoplasm lacks membrane bound organelles |
| 2. | Sap vacuoles are absent |
| 3. | Chromosome possesses acidic protein i.e., polyamine |
| 4. | Lack streaming movement of cytoplasm |
In human beings, the membrane of erythrocyte has
1. Approximately 40% proteins and 52% lipids
2. Cephalin on the outer side and lecithin on the inner side
3. Approximately 52% proteins and 40% lipids
4. Lecithin on the outer side and cephalin on the inner side
A number of proteins synthesized by ribosomes on the endoplasmic reticulum are modified in the ______ of the Golgi apparatus before they are released from its trans face
1. Tubules
2. Vesicles
3. Cisternae
4. More than one option is correct
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