Which of the following STDs are not curable?
| 1. | Genital herpes, Hepatitis B, HIV infection |
| 2. | Chlamydiasis, Syphilis, Genital warts |
| 3. | HIV, Gonorrhoea, Trichomoniasis |
| 4. | Gonorrhoea, Trichomoniasis, Hepatitis B |
| List-I | List-II | ||
| 1. | Lipase | I. | Peptide bond |
| 2. | Nuclease | II. | Ester bond |
| 3. | Protease | III. | Glycosidic bond |
| 4. | Amylase | IV. | Phosphodiester bond |
| 1. | A-III, B-II, C-I,D-IV | 2. | A-II, B-IV, C-I,D-III |
| 3. | A-IV, B-I, C-III, D-II | 4. | A-IV, B-II, C-III, D-I |
Frog’s heart when taken out of the body continues to beat for some time.
Select the best option from the following statements.
| 1. | Frog is a poikilotherm. |
| 2. | Frog does not have any coronary circulation. |
| 3. | Heart is "myogenic" in nature |
| 4. | Heart is autoexcitable |
| 1. | Only (d) |
| 2. | (a) and (b) |
| 3. | (c) and (d) |
| 4. | Only (c) |
Which of the following options correctly represent the characteristic features of phylum Annelida?
| 1. | Triploblastic, unsegmented body, and bilaterally symmetrical. |
| 2. | Triploblastic, a segmented body, and bilaterally symmetrical. |
| 3. | Triploblastic, flattened body, and acoelomate condition. |
| 4. | Diploblastic, mostly marine and radially symmetrical. |
The yellowish fluid "colostrum" secreted by mammary glands of the mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. This type of immunity is called as:
| 1. | Passive immunity | 2. | Active immunity |
| 3. | Acquired immunity | 4. | Autoimmunity |
In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:
| 1. | Eyelids and eyelashes are formed |
| 2. | Most of the major organ systems are formed |
| 3. | The head is covered with fine hair |
| 4. | Movement of the fetus |
| 1. | Transferases | 2. | Oxidoreductases |
| 3. | Dehydrogenases | 4. | Lyases |
The four sketches (A, B, C, and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function?
| Tissue | Location | Function | ||
| 1. | (C) | Collagen fibres | Cartilage | Attach skeletal muscles to bones |
| 2. | (D) | Smooth muscle tissue | Heart | Heart contraction |
| 3. | (A) | Columnar epithelium | Nephron | Secretion and absorption |
| 4. | (B) | Glandular epithelium | Intestine | Secretion |
2. Ti plasmid
3. λ phage
4. pBR 322
The increase in osmolarity from outer to inner medullary interstitium is maintained due to:
| (i) | Close proximity between Henle's loop and vasa recta |
| (ii) | Counter current mechanism |
| (iii) | Selective secretion of HCO3¯ and hydrogen ions in PCT |
| (iv) | Higher blood pressure in glomerular capillaries |
| 1. | Only (ii) | 2. | (iii) and (iv) |
| 3. | (i), (ii) and (iii) | 4. | (i) and (ii) |
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