1. From which of the following sources can one obtain adult human stem cells?
[A] Liver
[B] Bone Marrow
[C] Brain
[D] Medulla
Show Answer
Correct Answer: B [Bone Marrow]
Notes:
Adult human stem cells, unlike embryonic stem cells, are found in adult tissues. Among the major sources, bone marrow is often used to procure these cells. They have the property to self-renew and differentiate into numerous types of specialized cells. Stem cells obtained from the bone marrow can form different cells including blood cells and cells that contribute to the immune system.
2. In which among the following organ, “Bowman’s Capsule” is found?
[A] Liver
[B] Kidney
[C] Heart
[D] Small intestine
Show Answer
Correct Answer: B [Kidney]
Notes:
Each kidney is made of tube like structures called nephrons (renal tubules). A nephron is the structural and functional unit of the kidney. The cup-shaped upper end called Bowman’s capsule, has a network of capillaries within it called glomerulus. Glomerulus is a knot of capillaries formed from the artery which brings blood containing wastes and excess of water to the kidney. Bowman’s capsule leads into a tubular structure.
3. Diabetes insipidus (DI) caused by a deficiency of arginine vasopressin (AVP), also known as antidiuretic hormone (ADH). This hormone is secreted by which endocrine gland?
[A] Thyroid Gland
[B] Pituitary Gland (Hypophysis)
[C] Pancreas
[D] Liver
Show Answer
Correct Answer: B [Pituitary Gland (Hypophysis)]
Notes:
Diabetes insipidus (DI) is caused by a deficiency of arginine vasopressin (AVP), also known as antidiuretic hormone (ADH). Antidiuretic hormone is secreted by Pituitary Gland which is also called Hypophysis.
4. Which among the following test is most suitable to judge paternity ?
[A] Blood Grouping
[B] Tissue Culture
[C] DNA Test
[D] Genetic Codes
Show Answer
Correct Answer: C [DNA Test]
Notes:
DNA test is most suitable to judge paternity. It looks at specific locations of a person’s genome, in order to find or verify
ancestral genealogical relationships. It can also be used to estimate the ethnic mixture of an individual.
5. In which of the following diseases copper accumulates in tissues ?
[A] Fabry disease
[B] Canavan disease
[C] Wilson’s disease
[D] Gunther disease
Show Answer
Correct Answer: C [Wilson’s disease]
Notes:
Wilson’s disease is a genetic disorder in which excess copper builds up in the body. Symptoms are typically related to the brain and liver. Some of the symptoms are vomiting, weakness, fluid build up in the abdomen, swelling of the legs, etc.
6. Which among the following was the first vaccine ever to be developed?
[A] Cholera
[B] Smallpox
[C] Rabies
[D] Tetanus
Show Answer
Correct Answer: B [Smallpox]
Notes:
Smallpox vaccine was the first vaccine ever to be developed. Smallpox is an infectious disease which is caused by one of two virus variants, Variola major and Variola minor.
7. Beta-Keratin is found in which among the following in abundance?
[A] Fishes
[B] Reptiles
[C] Mammalians
[D] Amphibians
Show Answer
Correct Answer: B [Reptiles]
Notes:
Beta-Keratin is found in reptiles in abundance. β-keratin also known as beta-keratin is a member of a structural protein family and is found in the epidermis of reptiles and birds.
8. The animals of which of the following sets are collectively called as Elasmobranches?
[A] Shark, Skates and Rays
[B] Shark, Rays and Dolphins
[C] Shark, Skates and Dolphins
[D] Skates, Dolphins and Rays
Show Answer
Correct Answer: A [ Shark, Skates and Rays]
Notes:
The term Elasmobranches is a collective name for the sharks, skates and rays. Elasmobranches have a skeleton made of cartilage, no swim bladders and rough skin made up of small dermal dentils. Elasmobranches are renowned for their highly tuned senses.
9. In which of the following kidney shaped guard cells are present?
[A] Dicot plants
[B] Monocot plants
[C] Grasses
[D] Algae
Show Answer
Correct Answer: A [Dicot plants]
Notes:
Kidney-shaped guard cells are found in dicotyledons. A dicotyledon is a flowering plant with an embroy that bears two cotyledons (seed leaves).
10. Who proposed five kingdom classification?
[A] Ernst Mayr
[B] M.W.Beijerinck
[C] R.H. Whittaker
[D] D.I Ivanovsky
Show Answer
Correct Answer: C [R.H. Whittaker]
Notes:
The five kingdom classification was proposed by R.H. Whittaker in 1969. The five kingdoms were formed on the basis of characteristics. It includes Kingdom Monera, Kingdom Protista, Kingdom Fungi, Kingdom Plantae, and Kingdom Animalia.