1. Deficiency of Vitamin D causes?
[A] Rickets
[B] Night blindness
[C] Goitre
[D] None of the above
Show Answer
Correct Answer: A [Rickets]
Notes:
Deficiency of Vitamin D can lead to a loss of bone density, which can result in osteoporosis and fractures (broken bones). In children the deficient of Vitamin D can cause rickets.
2. What is the correct sequence of bioelements in the human body in decreasing order?
[A] Oxygen, Hydrogen, Carbon, Nitrogen, Calcium, Phosphorus
[B] Oxygen, Carbon, Nitrogen, Hydrogen, Calcium, Phosphorus
[C] Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus
[D] Carbon, Oxygen, Hydrogen, Nitrogen, Calcium, Phosphorus
Show Answer
Correct Answer: C [Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus]
Notes:
The total mass of a human body is made up of six key elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. These “bioelements” make up over 99% of the body mass. Oxygen is the most plentiful, accounting for about 65% of a human’s body mass. Carbon and hydrogen follow, then nitrogen, calcium, and phosphorus.
3. 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.
4. The cork cells are impervious to water. Which among the following is responsible to give this quality to Cork?
[A] Cellulose
[B] Cutin
[C] Suberin
[D] Glucose
Show Answer
Correct Answer: C [Suberin]
Notes:
The cork cells are impervious to water. Suberin is responsible to give this quality to Cork. Suberin, cutin and lignins are complex, higher plant epidermis and periderm cell-wall macromolecules, forming a protective barrier.
5. The reverse osmosis is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure on ________?
[A] Concentrated solution
[B] Dilute solution
[C] Membrane
[D] None of the above
Show Answer
Correct Answer: A [Concentrated solution]
Notes:
This process requires that a high pressure be exerted on the high concentration side of the membrane.
6. Large concentrations of which of the following salts causes the Blue Baby Syndrome?
[A] Phosphates
[B] Nitrates
[C] Sulfates
[D] Carbonates
Show Answer
Correct Answer: B [Nitrates]
Notes:
Infants who drink water contaminated with high levels of nitrate or take foods made with water which is contaminated with nitrate may develop serious health condition due to which infant’s blood is unable to carry enough oxygen to body cells and tissue. This condition is known as methemoglobinemia or “blue baby syndrome.”
7. Which among the following have a ‘mixed heart’ ,that is the heart in which the oxygenated and the deoxygenated blood is mixed?
[A] Birds
[B] Fishes
[C] Reptiles
[D] Nematodes
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles and Amphibians have a mixed heart.
8. 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.
9. With reference to cellular organization, consider the following:
- Fungi
- Bacteria
- Algae
- Protozoa
Which of the above possess eukaryotic cells?
[A] Only 3 and 4
[B] Only 1 and 2
[C] 1, 2, 3 and 4
[D] Only 1, 3 and 4
Show Answer
Correct Answer: D [Only 1, 3 and 4]
Notes:
Eukaryotic cells feature a true nucleus and membrane-bound organelles. Fungi, algae, and protozoa are all eukaryotic organisms. In contrast, bacteria are prokaryotic, lacking a true nucleus and such organelles. Therefore, only Fungi, Algae, and Protozoa (1, 3 and 4) possess eukaryotic cells, while bacteria do not.
10. Haemoglobin is an important component of which of the following?
[A] Red blood cells
[B] White blood cells
[C] Plasma
[D] All options are correct
Show Answer
Correct Answer: A [Red blood cells]
Notes:
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Haemoglobin in the blood carries oxygen from the lungs or gills to the rest of the body.
