Gel electrophoresis is used for:
1.
cutting of DNA into fragments
2.
separation of DNA fragments according to their size
3.
construction of recombinant DNA by joining with cloning vectors
4.
isolation of DNA molecule
| 1. | cutting of DNA into fragments |
| 2. | separation of DNA fragments according to their size |
| 3. | construction of recombinant DNA by joining with cloning vectors |
| 4. | isolation of DNA molecule |
Subtopic: Process of Biotech | Separation and Isolation of DNA fragments |
91%
Level 1: 80%+
AIPMT - 2008
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Polysome is formed by:
| 1. | several ribosomes attached to a single mRNA |
| 2. | many ribosomes attached to a strand of endoplasmic reticulum |
| 3. | a ribosome with several subunits |
| 4. | ribosomes attached in a linear arrangement |
Subtopic: Ribosome and Inclusion Bodies |
90%
Level 1: 80%+
AIPMT - 2008
Hints
Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matching from the four options that follow:
| Method | Mode of action | ||
| A. | The pill | 1. | Prevents sperms from reaching cervix |
| B. | Condom | 2. | Prevents implantation |
| C. | Vasectomy | 3. | Prevents ovulation |
| D. | Copper-T | 4. | Semen contains no sperms |
1. A-3 B-1 C-4 D-2
2. A-4 B-1 C-2 D-3
3. A-3 B-4 C-1 D-2
4. A-2 B-3 C-1 D-4
Subtopic: Contraception: Natural Methods | Contraception: Barrier Methods & IUDs | Hormonal Contraceptives, Emergency Contraception & Terminal Methods |
90%
Level 1: 80%+
AIPMT - 2008
Hints
Links
What is the vital capacity of our lungs?
| 1. | Inspiratory reserve volume plus tidal volume |
| 2. | Total lung capacity minus expiratory reserve volume |
| 3. | Inspiratory reserve volume plus expiratory reserve volume |
| 4. | Total lung capacity minus residual volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
76%
Level 2: 60%+
AIPMT - 2008
Hints
In which one of the following, the male and female gametophytes don't have free-living independent existence?
| 1. | Pteris | 2. | Funaria |
| 3. | Polytrichum | 4. | Cedrus |
Subtopic: Gymnosperms |
67%
Level 2: 60%+
AIPMT - 2008
Hints
A transgenic food crop, which may help in solving the problem of night blindness in developing countries is:
| 1. | Flavr savr tomatoes |
| 2. | Starlink maize |
| 3. | Bt soybean |
| 4. | Golden rice |
Subtopic: Intro to Agri Applications | Other GM Crops |
90%
Level 1: 80%+
AIPMT - 2008
Hints
A lake near a village suffered heavy mortality of fish within a few days. Consider the following reasons for this:
| 1. | Lots of urea and phosphate fertilizer were used in the crops in the vicinity. |
| 2. | The area was sprayed with DDT by an aircraft. |
| 3. | The lake water turned green and stinky |
| 4. | Phytoplankton populations in the lake declined initially, thereby, greatly reducing photosynthesis. |
Which two of the above were the main causes of fish mortality in the lake?
1. 2, 3
2. 3, 4
3. 1, 3
4. 1, 2
Subtopic: Water Pollution: I | Water Pollution: II | Water Pollution |
Level 3: 35%-60%
AIPMT - 2008
Hints
Given below is a diagrammatic cross-section of a single loop of human cochlea.
Which one of the following options correctly represents the names of three different parts?
| 1. | B: Tectorial membrane C: Perilymph D: Secretory cells |
| 2. | C: Endolymph D: Sensory hair cells A: Serum |
| 3. | D: Sensory hair cells A: Endolymph B: Tectorial membrane |
| 4. | A: Perilymph B: Tectorial membrane C: Endolymph |
Subtopic: Sensory reception and Processing | Mechanism of hearing |
66%
Level 2: 60%+
AIPMT - 2008
Hints
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
| 1. | vessels and tracheid differentiation |
| 2. | leaf abscission |
| 3. | annual plants |
| 4. | floral parts. |
Subtopic: Auxin Function | Cytokinin | Ethylene | Abscisic Acid |
66%
Level 2: 60%+
AIPMT - 2008
Hints
Vascular tissues in flowering plants develop from:
1. phellogen
2. plerome
3. periblem
4. dermatogen
Level 4: Below 35%
AIPMT - 2008
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