1. Which of the following correctly defines “Mother-of-pearl”?
[A] An oyster which yields the pearl
[B] A special large sized pearl found in Japan
[C] A hard iridescent substance forming the inner layer of certain shells
[D] Female individuals of certain species of shelled mollusk
Show Answer
Correct Answer: C [ A hard iridescent substance forming the inner layer of certain shells ]
Notes:
Nacre also known as mother of pearl, is an organic-inorganic composite material produced by some mollusks as an inner shell layer; it is also what makes up the outer coating of pearls. It is strong, resilient, and iridescent.
2. A person develops resistance to the action of insulin in the body’s cells , it is called as___________?
[A] Type 1 Diabetes
[B] Type 2 Diabetes
[C] Hyabrid Diabetes
[D] None of the above
Show Answer
Correct Answer: B [Type 2 Diabetes]
Notes:
A person develops resistance to the action of insulin in the body’s cells , it is called as Type 2 Diabetes. Type 2 diabetes is a lifelong disease that prevents your body from using insulin the way it should be using.
3. Which of the following vertebrae are found in Neck ?
[A] Cervical
[B] Thoracic
[C] Lumbar
[D] None
Show Answer
Correct Answer: A [Cervical]
Notes:
Cervical vertebrae are found in neck. The cervical vertebrae of the spine is consisted of seven bony rings that reside in the neck between the base of the skull and the thoracic vertebrae in the trunk.
4. A genetic code specifies how many kinds of amino acids?
[A] 12
[B] 15
[C] 20
[D] 25
Show Answer
Correct Answer: C [20]
Notes:
There are as many as 100 thousand kinds of proteins that constitute the body, and these comprise only 20 kinds of amino acids in various combinations.
5. Late Hargobind Khorana had received Nobel Prize in physiology in 1968, for work on which among the following?
[A] Mechanisms of the action of hormones
[B] Chemical Structure of antibodies
[C] Interpretation of the genetic code
[D] Structural and functional organization of the cell
Show Answer
Correct Answer: C [Interpretation of the genetic code]
Notes:
Late Hargobind Khorana had received Nobel Prize in physiology in 1968, for work on interpretation of the genetic code. Har Gobind Khorana was an Indian American biochemist.
6. Taxonomically, which among the following is closet to Sea Corals?
[A] Sea Lettuce
[B] Sea Horse
[C] Sea Anemone
[D] Sea Urchin
Show Answer
Correct Answer: C [ Sea Anemone]
Notes:
As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and Hydra.
7. Which of the following glands is responsible for production of melatonin and to regulate reproductive hormones?
[A] Pineal gland
[B] Pituitary Gland
[C] Hypothalamus
[D] Adrenal Glands
Show Answer
Correct Answer: A [ Pineal gland]
Notes:
The primary function of the Pineal gland is production of melatonin, which helps maintain circadian rhythm and regulate reproductive hormones.
8. Root hair in plants are produced from which of the following?
[A] cortex
[B] pericycle
[C] epidermis
[D] endodermis
Show Answer
Correct Answer: C [epidermis]
Notes:
Cells of the epidermis produce root hairs near the root apex. These cells are generally thin-walled, in contrast to the cells of the cortex, lying below the surface, which ultimately may become very thick-walled. The root hairs have fundamental importance in absorption of water and nutrients.
9. Who among the following proposed the adage “Survival of the fittest”?
[A] Darwin
[B] Lamarck
[C] William
[D] Huxley
Show Answer
Correct Answer: A [Darwin]
Notes:
“Survival of the fittest” is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success.
10. What is the name of a group of similar cells performing a specific function?
[A] Tissue
[B] Organ
[C] Organ system
[D] Cellular organization
Show Answer
Correct Answer: A [Tissue]
Notes:
A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.
