1- Phenylketonuria is an example of an inborn error of metabolism. This error refers to:
A. Hormonal overproduction
B. Non-disjunction
C. Atrophy of endocrine glands
D. Inherited lack of an enzyme
View Answer
Answer : D. Inherited lack of an enzyme
Description
2- As in the arms and legs, blood flows against gravity and is prevented from flowing back by:
A. Valves
B. The extremely low pressure of venous blood
C. Movements in the surrounding muscles
D. The narrowing down of the lumen of veins by the contraction of the muscle layer comprising their walls
View Answer
Answer : A. Valves
Description
3- The weight of an average human male brain is about:
A. 1 kg
B. 1200 gms
C. 1350 gms
D. 1500 gms
View Answer
Answer : C. 1350 gms
Description
4- On sudden cardiac arrest, which of the following is advised as a first step to revive the functioning of human heart?
A. Sprinkling water on the face
B. Giving cool water to drink
C. Mouth-to-mouth resuscitation
D. Giving external cardiac massage
View Answer
Answer : D. Giving external cardiac massage
Description
5- Identical twins arise when two:
A. Cells develop independently from the same zygote
B. Gametes develop independently
C. Giving external cardiac massage
D. Ova develop independently
View Answer
Answer : A. Cells develop independently from the same zygote
Description
6- The image formed on the retina of the eye is:
A. Real and upright
B. Real and inverted
C. Virtual and upright
D. Real and enlarged
View Answer
Answer : B. Real and inverted
Description
7- Element that is not found in blood is:
A. Iron
B. Copper
C. Chromium
D. Magnesium
View Answer
Answer : C. Chromium
Description
8- Scratching eases itching because:
A. It kills germs
B. It suppresses the production of enzymes which cause itching
C. It removes the outer dust in the skin
D. It stimulates certain nerves which direct the brain to increase the production of antihistaminic chemicals
View Answer
Answer : D. It stimulates certain nerves which direct the brain to increase the production of antihistaminic chemicals
Description
9- The gland, which in relation to body size is largest at birth and then gradually shrinks after puberty, is:
A. Thyroid
B. Pituitary
C. Thymus
D. Adrenal
View Answer
Answer : C. Thymus
Description
10- The first organ to be transplanted was:
A. Kidney
B. Lung
C. Heart
D. Liver
View Answer
Answer : A. Kidney
Description
11- Which of the following human bones is the knee bone?
A. Stapes
B. Clavicle
C. Patella
D. Phalanx
View Answer
Answer : C. Patella
Description
12- A human sperm may contain:
1. X-chromosome 2. Y-chromosome 3. XY-chromosome
A. 1 only
B. 2 only
C. 1 and 2
D. 1, 2 and 3
View Answer
Answer : C. 1 and 2
Description
13- The amount of light entering the eye is regulated by:
A. Iris
B. Pupil
C. Sclera
D. Cornea
View Answer
Answer : A. Iris
Description
14- The heart of human embryo starts beating:
A. In the first week of its development
B. In the third week of its development
C. In the fourth week of its development
D. In the sixth week of its development
View Answer
Answer : C. In the fourth week of its development
Description
15- A person’s blood group will not have any antibodies if it is:
A. A
B. B
C. O
D. AB
View Answer
Answer : D. AB
Description
16- Which of the following are bones of human leg?
A. Radius
B. Tibia
C. Femur
D. Fibula
View Answer
Answer : B. Tibia
Description
17- Which of the following practices can prevent blood coagulation?
1. Chilling 2. Thermal treatment 3. Adding oxalate
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
View Answer
Answer : D. 1, 2 and 3
Description
18- Respiratory quotient is the ratio of:
A. O₂/H₂O
B. CO₂/O₂
C. O₂/CO₂
D. CO₂/H₂O
View Answer
Answer : B. CO₂/O₂
Description
19- Bleeding from artery is characterized by which of the following:
1. Blood is red. 2. Blood is purple. 3. Bleeding is continuous. 4. Bleeding is intermittent
A. 2 and 3
B. 1 and 3
C. 1 and 4
D. 2 and 4
View Answer
Answer : B. 1 and 3
Description
20- Which of the following is not a vestigial organ?
