Haploids are more suitable for mutation studies than the diploids. This is because:
| 1. | haploids are reproductively more stable than diploids |
| 2. | mutagens penetrate in haploids more effectively than in diploids |
| 3. | haploids are more abundant in nature than diploids |
| 4. | all mutations, whether dominant or recessive are expressed in haploids |
Subtopic: Plant Tissue Culture |
68%
Level 2: 60%+
AIPMT - 2008
Hints
Which one of the following is not characteristic of phylum-Annelida?
1. Closed circulatory system
2. Segmentation
3. Pseudocoelom
4. Ventral nerve cord
Subtopic: Phylum Annelida |
85%
Level 1: 80%+
AIPMT - 2008
Hints
Importance of day length in the flowering of plants was first shown in:
1. Lemma
2. tobacco
3. cotton
4. Petunia
82%
Level 1: 80%+
AIPMT - 2008
Hints
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
1. pushing open of the venous valves
2. suction pull
3. stimulation of the sino auricular node
4. pressure difference between the caval and atrium
Subtopic: Human Heart: Double Circulation | Human Heart: Cardiac Cycle |
57%
Level 3: 35%-60%
AIPMT - 2008
Hints
The linking of the antibiotic resistance gene with the plasmid vector became possible with:
1. DNA ligase
2. endonucleases
3. DNA polymerase
4. exonucleases
Subtopic: Tools: Enzymes: II | Restriction Enzymes - Main Enzymes | Separation and Isolation of DNA fragments | Tools |
87%
Level 1: 80%+
AIPMT - 2008
Hints
Which one of the following statements is incorrect about menstruation?
| 1. | During normal menstruation about 40 ml of blood is lost |
| 2. | The menstrual fluid can easily clot |
| 3. | At menopause in the female, there is an especially abrupt increase in gonadotropic hormones |
| 4. | The beginning of the cycle of menstruation is called menarche |
Subtopic: Introduction to Menstrual Cycle: 1 |
67%
Level 2: 60%+
AIPMT - 2008
Hints
Which one of the following phyla is correctly matched with its two general characteristics?
| 1. | Arthropoda - The body is divided into a head, thorax, abdomen and respiration by mouth |
| 2. | Chordata - Notochord at some stage and separate anal and urinary openings to the outside |
| 3. | Echinodermata – Pentamerous radial symmetry and mostly internal fertilization |
| 4. | Mollusca - Normally oviparous and developed through a trochophore or veliger larva |
Subtopic: Phylum Arthropoda | Phylum Mollusca |
Level 4: Below 35%
AIPMT - 2008
Hints
Which one of the following pair of items correctly belongs to the category of organs mentioned against it?
| 1. | Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs |
| 2. | Nictitating membrane and blind spot in the human eye – vestigial organs |
| 3. | Nephridia of the earthworm and Malpighian tubules of cockroach - Excretory organs |
| 4. | Wings of a honey bee and wings of crow - Homologous organs |
Subtopic: Definition & Types of Evolution | Theory of Evolution & Lamarckism |
66%
Level 2: 60%+
AIPMT - 2008
Hints
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because:
| 1. | high energy bonds are formed in mitochondrial proteins |
| 2. | ADP is pumped out of the matrix into the inter-membrane space |
| 3. | a proton gradient forms across the inner membrane |
| 4. | there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP) |
Subtopic: Chemiosmotic hypothesis |
81%
Level 1: 80%+
AIPMT - 2008
Hints
Consider the following statements about biomedical technologies.
Which two of the above statements are correct?
| A. | During open heart, surgery blood is circulated in the heart-lung machine. |
| B. | Blockage in coronary arteries X-ray by angiography. |
| C. | Computerized Axial Tomography (CAT) shows a detailed internal structure as seen in a section of the body. |
| D | X-ray provides clear and detailed images of organs like prostate glands and lungs. |
Which two of the above statements are correct?
1. B and D
2. C and D
3. A and C
4. A and B
Subtopic: Molecular Diagnosis |
Level 3: 35%-60%
AIPMT - 2008
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