General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
41
Which amino acid is the precursor for the neurotransmitter Serotonin?
Answer:
Tryptophan
Tryptophan is an essential amino acid. Once consumed, it is converted into 5-HTP and then into serotonin, which regulates mood, sleep, and appetite.
42
Which mineral is a key component of 'ATP' (Adenosine Triphosphate), the primary energy currency of the cell?
Answer:
Phosphorus
Phosphorus is part of the phosphate groups in ATP. The breaking of the bond between the second and third phosphate groups releases the energy used for cellular work.
43
Which B-vitamin is also known as 'Riboflavin'?
Answer:
B2
Vitamin B2 is riboflavin. It is essential for energy production and gives urine a bright neon yellow color when consumed in excess from supplements.
44
An excess of which fat-soluble vitamin can lead to 'Hypercalcemia' (excessive blood calcium)?
Answer:
Vitamin D
Because Vitamin D enhances calcium absorption, taking extremely high doses of supplements can cause the body to absorb too much calcium, leading to kidney stones and heart damage.
45
Which of the following has the highest Glycemic Index (GI)?
Answer:
White bread
White bread is made from highly refined flour, which is rapidly converted into glucose by the body, resulting in a high GI score (typically 70 or higher).
46
What is 'Colostrum'?
Answer:
The first milk produced by a mother, rich in antibodies
Colostrum is produced in the first few days after birth. It is thick, yellowish, and contains high concentrations of immunoglobulins (antibodies) to boost the newborn's immune system.
47
Which nutrient is the most important for maintaining the osmotic pressure of the blood and fluid balance?
Answer:
Protein (Albumin)
Albumin, a protein made by the liver, exerts 'oncotic pressure' which keeps fluid from leaking out of blood vessels into the tissues. Low albumin leads to edema.
48
Which vitamin is destroyed most easily by cooking and exposure to light or air?
Answer:
Vitamin C
Vitamin C is highly unstable. Heat, oxygen, and alkaline conditions (like baking soda) quickly degrade its nutritional value.
49
The 'Whole30' program is primarily a 30-day version of what type of diet?
Answer:
Elimination diet
Whole30 is a strict elimination diet designed to identify food sensitivities by removing potentially inflammatory groups (sugar, alcohol, grains, legumes, dairy) and then slowly reintroducing them.
50
Which of the following is an example of an 'Antinutrient' that can inhibit the absorption of minerals like calcium and iron?
Answer:
Phytates
Phytates (phytic acid) are found in whole grains, seeds, and legumes. They bind to minerals in the digestive tract, making them unavailable for absorption.