Q. No.When the centromere in a chromosome is located close to its end, the chromosome is called as:
1.
Metacentric
2.
Sub-metacentric
3.
Acrocentric
4.
Telocentric
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The number of correct statements amongst the given statements would be:
| I: | The outer nuclear membrane is usually continuous with ER and also bears ribosomes |
| II: | Nuclear pores allow movement of RNA and proteins in both directions between nucleus and cytoplasm |
| III: | Satellite chromosomes have non-staining secondary constrictions at constant locations |
| IV: | Microbodies are membrane bound vesicles containing various enzymes and are present in both plant and animal cells |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
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The triple helix structure of collagen was discovered by:
1. G. N. Ramachandran
2. Y. S. Subbarao
3. C. V. Raman
4. S. Chandrashekhar
A non-membrane bound organelle found in all cells is:
1. Centriole
2. Lysosome
3. Vacuole
4. Ribosome
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Spindle fibers are attached to the chromosome in the region of :
1. Centrosome
2. Chromomere
3. Chromonema
4. Kinetochore
Identify the appendage present on the surface of some bacterial cells that help attach them to rocks in streams and also to the host tissues:
1. Flagella
2. Pili
3. Fimbriae
4. Cilia
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Most of the functions of a cell membrane can be attributed to its:
1. Phospholipids
2. Cholesterol
3. Proteins
4. Carbohydrates
Algal cell walls are made up of:
1. Cellulose, Galactans, Mannans and Minerals
2. Cellulose, Hemicellulose, Pectins and Proteins
3. Cellulose, Pectins, Mannans and Minerals
4. Cellulose, Hemicellulose, Mannans and Pectins
Which of the following is not considered as a part of the endo-membranous system of a eukaryotic cell?
1. Lysosomes
2. Vacuoles
3. Endoplasmic reticulum
4. Peroxisomes
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In competitive inhibition, if the concentration of the substrate is increased :
1. the rate of the reaction is increased
2. the rate of the reaction is decreased
3. the rate of the reaction is not affected
4. the reaction direction is reversed
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