The initial step in the digestion of milk in an infant is carried out by:
1. Lipase
2. Trypsin
3. Rennin
4. Pepsin
Fructose is absorbed into the blood through mucosa cells of intestine by the process called:
1. Active transport
2. Facilitated transport
3. Simple diffusion
4. Co-transport mechanism
Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs:
| 1. | as bicarbonate ions |
| 2. | in the form of dissolved gas molecules |
| 3. | by binding to R.B.C |
| 4. | as carbamino-haemoglobin |
Person with blood group AB is considered as universal recipient because he has:
| 1. | both A and B antigens on RBC but no antibodies in the plasma |
| 2. | both A and B antibodies in the plasma |
| 3. | no antigen on RBC and no antigens in the plasma |
| 4. | both A and B antigens in the plasma but no antibodies |
How do parasympathetic neural signals affect the working of the heart?
| 1. | reduce both heart rate and cardiac output |
| 2. | Heart rate is increased without affecting the cardiac output |
| 3. | Both heart rate and cardiac output increased |
| 4. | Heart rate decreases but cardiac output increases |
Which of the following causes an increase in sodium reabsorption in distal convoluted tubule?
1. Increase in aldosterone levels
2. Increase in antidiuretic hormone levels
3. Decrease in aldosterone levels
4. Decrease in antidiuretic hormone levels
Select the correct matching of the types of the joint with the example in the human skeletal system:
| Types of joint | Examples | |
| 1. | Cartilaginous joint | between frontal and parietal |
| 2. | Pivot joint | between third and fourth cervical vertebrae |
| 3. | Hinge joint | between the humerus and pectoral girdle |
| 4. | Gliding joint | between carpals |
1. 1
2. 2
3. 3
4. 4
Stimulation of a muscle fiber by a motor neuron occurs at:
1. the neuromuscular junction
2. the transverse tubules
3. the myofibril
4. the sarcoplasmic reticulum
Injury localized to the hypothalamus would most likely disrupt:
1. short-term memory
2. co-ordination during locomotion
3. executive functions, such as decision making
4. regulation of body temperature
Which one of the following statements is not correct?
| 1. | Retinal is the light-absorbing portion of visual photo pigments |
| 2. | In retina, the rods have the photopigments rhodopsin while cones have three different photopigments. |
| 3. | Retinal is a derivative of Vitamin C |
| 4. | Rhodopsin is the purplish protein present in rods only. |
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