The specific palindromic sequence which is recognized by EcoRI is:
1.
5' -GGAACC-3'
3'-CCTTGG-5'
2.
5'-CTTAAG-3'
3'-GAATTC-5'
3.
5'-GGATCC-3'
3'-CCTAGG-5'
4.
5'-GAATTC-3'
3'-CTTAAG-5'
3'-CCTTGG-5'
3'-GAATTC-5'
3'-CCTAGG-5'
3'-CTTAAG-5'
The first phase of translation is:
1. Recognition of DNA molecule
2. Aminoacylation of tRNA
3. Recognition of an anti-codon
4. Binding of mRNA to ribosome
Floridian starch has structure similar to :
1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose
How many true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
| 1. | 2 | 2. | 14 |
| 3. | 6 | 4. | 4 |
Snow-blindness in Antarctic regions is due to:
| 1. | Inflammation of cornea due to high doses of UV-B radiation |
| 2. | High reflection of light from snow |
| 3. | Damage to the retina caused by infra-red rays |
| 4. | Freezing of fluids in the eye because of the low temperature |
The enzyme enterokinase helps in the conversion of
1. trypsinogen into trypsin
2. caseinogen into casein
3. pepsinogen into pepsin
4. protein into polypeptides
Match the following with respect to meiosis:
| Column I | Column II | ||
| (a) | Zygotene | (i) | Terminalization |
| (b) | Pachytene | (ii) | Chiasmata |
| (c) | Diplotene | (iii) | Crossing over |
| (d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iv | iii | ii | i |
| 2. | i | ii | iv | iii |
| 3. | ii | iv | iii | i |
| 4. | iii | iv | i | ii |
Which of the following statements about inclusion bodies is incorrect?
1. These are involved in the ingestion of food particles.
2. They lie freely in the cytoplasm.
3. These represent reserve material in cytoplasm.
4. They are not bound by any membrane.
Match the following columns and select the correct option:
| Column-I | Column-I | ||
| (a) | Eosinophils | (i) | Immune response |
| (b) | Basophils | (ii) | Phagocytosis |
| (c) | Neutrophils | (iii) | Release histaminase, destructive enzymes |
| (d) | Lymphocytes | (iv) | Release granules containing histamine |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (iii) | (iv) | (ii) | (i) |
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