1. Which of the following Vitamin is required for Normal Blood Circulation ?
[A] Vitamin A
[B] Vitamin K
[C] Vitamin D
[D] Vitamin E
Show Answer
Correct Answer: B [Vitamin K]
Notes:
Vitamin K is required for Normal Blood Circulation. Vitamin K is a fat-soluble vitamin which plays a key role in helping the blood clot, preventing excessive bleeding.
2. Apart from sugarcane (most commonly Saccharum officinarum) which among the following plants is widely known in the world as a commercial source of table sugar ?
[A] Toona cilata
[B] Gloriosa superba
[C] Asparagus pulmosus
[D] Beta vulgaris
Show Answer
Correct Answer: D [Beta vulgaris]
Notes:
Beta vulgaris is beet or sugarbeet or Chukandar and has been widely used as a commercial crop for table sugar. Glorisoa superba is Glory Lily which is an ornamental plant. Asparagus pulmosus is also an ornamental plant. Brassica alba is common mustard. Toona cilata is a timber plant from which Indian Redwood is obtained.
3. Which among the following is essential gene material ?
[A] Protein
[B] Fat
[C] DNA
[D] RNA
Show Answer
Correct Answer: C [DNA]
Notes:
The correct answer is DNA. DNA (deoxyribonucleic acid) is the essential genetic material in most living organisms, encoding the instructions for development, functioning, growth, and reproduction. It is composed of nucleotides and forms a double helix structure. RNA (ribonucleic acid) plays a crucial role in protein synthesis and can also serve as genetic material in some viruses, but DNA is the primary carrier of genetic information in cells.
4. In human body, the largest amount of the carbon dioxide produced by body cells is carried to the lungs as__:
[A] CO2 attached to haemoglobin in the red blood cells
[B] The bicarbonate ion attached to haemoglobin
[C] CO2 gas in solution in the plasma
[D] Bicarbonate ion dissolved in the plasma
Show Answer
Correct Answer: D [ Bicarbonate ion dissolved in the plasma]
Notes:
Although a small amount of CO2 is carried by the red blood cells, most is carried as the bicarbonate ion in plasma. Carbon dioxide can travel in the bloodstream in many forms. It can mix with water and form carbonic acid. It can also attach to hemoglobin in red blood cells.
5. What is plant cell wall mainly composed of?
[A] Vitamin
[B] Lipids
[C] Cellulose
[D] Protein
Show Answer
Correct Answer: C [Cellulose]
Notes:
A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth.
6. Which of the following inferences can be drawn from the following statements?
A well balanced nutritious diet is essential for good athletes. This means (UPSC Prelims 1986)
[A] Bad athletes are having under-nutritious food
[B] Well-balanced diet produces good athletes
[C] Athletes should take nutritious food
[D] None of the above
Show Answer
Correct Answer: C [Athletes should take nutritious food]
Notes:
Physical health is crucial for athletes and so is nutrition. We must take special care to get enough of the calories, vitamins. The amount of food you need depends on your age, height, weight, and sport or activity level. To keep their bodies performing optimally, endurance athletes should be familiar with these 10 important nutrients. The first seven essential supplements are the minerals calcium, iron, magnesium, potassium, selenium, sodium and zinc. Their benefits range from keeping bones strong to minimizing fatigue.
7. Which vitamin helps in the clotting of blood?
[A] Vitamin C
[B] Vitamin B
[C] Vitamin K
[D] Vitamin E
Show Answer
Correct Answer: C [Vitamin K]
Notes:
Vitamin K helps in the clotting of blood preventing excessive leakage of blood.
Extra info: Its name is derived from German which means Koagulationsvitamin.
8. Name the signal that helps the protein to move in or out of the nucleus?
[A] Notch signal
[B] Paracrine signal
[C] Nuclear localization signal
[D] Chemical signals
Show Answer
Correct Answer: C [Nuclear localization signal]
Notes:
Nuclear localization signals are also known as nuclear-export signals. It helps in importing and exporting proteins into the nucleus through nuclear pores. These signals are the sequence of specific amino acids present on the protein.
9. What are the major types of cytoskeleton filaments?
[A] Actin filaments
[B] microtubules
[C] Intermediate filaments
[D] All of them
Show Answer
Correct Answer: D [All of them]
Notes:
Three major types of filaments make up the cytoskeleton: actin filaments, microtubules, and intermediate filaments.
10. Which of the following viruses can rescue adenovirus in simian cells?
[A] Rabies
[B] Vaccinia
[C] Simian virus 40
[D] Cytomegalovirus
Show Answer
Correct Answer: C [Simian virus 40]
Notes:
Simian virus 40 (SV40) has been one of the most intensively studied animal viruses. Simian virus 40 has been used as a model eukaryotic promoter for the study of DNA sequence elements and cellular factors involved in transcriptional control and initiation.
