1. Hemoglobin in humans has the highest affinity for which of the following gases?
[A] Methane
[B] Carbon Monoxide
[C] Nitrous oxide
[D] Carbon dioxide
Show Answer
Correct Answer: B [Carbon Monoxide]
Notes:
Hemoglobin in humans has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Carbon monoxide is thus problematic for humans because it has affinity higher than that of oxygen.
2. Daltonism is the name referred to which of the following disorders as this name was kept in honour of John Dalton , the father of atomic theory?
[A] Deafness
[B] Color Blindness
[C] Night Blindness
[D] Astigmatism
Show Answer
Correct Answer: B [Color Blindness]
Notes:
Daltonism refers to the Colorblindness of the red-green type which is also known as deuteranopia or deuteranomaly.The term “Daltonism” is derived from the name of the chemist and physicist, John Dalton (1766-1844).
3. Who is the father of Botany?
[A] Adam Smith
[B] Greco-Roman
[C] Theophrastus
[D] Carl Linnaeur
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Correct Answer: C [Theophrastus]
Notes:
Botany is the study of plants. Theophrastus (370-287 B.C.) is known as the father of Botany
4. Zebrafish, which has been genetically modified in Glofish to be sold as a pet is native to which among the following countries?
[A] India and Sri Lanka
[B] Australia & New Zealand
[C] India and Pakistan
[D] Japan
Show Answer
Correct Answer: A [India and Sri Lanka]
Notes:
The zebrafish is a freshwater fish belonging to the minnow family. It is native to South Asia, it is a popular aquarium fish, frequently sold under the trade name zebra danio. It belongs to India and Sri Lanka.
5. Lipoproteins which are the large molecules and which transport the cholesterol in the bloodstream are ______-?
[A] protein molecules
[B] fat molecules
[C] protein and fat molecules
[D] Lipids
Show Answer
Correct Answer: C [protein and fat molecules]
Notes:
A lipoprotein is a biochemical assembly consisting of protein and fat molecules whose primary purpose is to transport hydrophobic lipid molecules in water, as in blood plasma or other extracellular fluids.
6. Any disease which has a name with a suffix encephalitis is a disorder of ______?
[A] Nerves
[B] Brain
[C] Lungs
[D] Heart
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Correct Answer: B [Brain]
Notes:
Encephalitis is an inflammation of the brain tissue. The most common cause is viral infections which is caused by bacteria or even fungi. There are two main types of encephalitis: primary Encephalitis and secondary Encephalitis.
7. Which among the following is NOT a true bast fiber?
[A] Jute
[B] Hemp
[C] Flax
[D] Cotton
Show Answer
Correct Answer: D [Cotton]
Notes:
Please note that Bast Fibers are obtained from Phloem
8. Turmeric belongs to from which one of the following family of plants?
[A] Radish
[B] Ginger
[C] Onion
[D] Clove
Show Answer
Correct Answer: B [Ginger]
Notes:
Turmeric is a product of Curcuma longa, a rhizomatous herbaceous perennial plant belonging to the ginger family Zingiberaceae. They are native to tropical South Asia. There are 133 species of Curcuma all around the world.
9. Which among the following are found in all viruses?
[A] DNA and proteins
[B] Nucleic acid and capsid
[C] DNA and cell membrane
[D] RNA and cell wall
Show Answer
Correct Answer: B [ Nucleic acid and capsid]
Notes:
Viruses are made up of nucleic acid (either DNA or RNA; but not both) surrounded by a protein coat called a capsid. They do not contain a cell wall, proteins, or cell membrane
10. Which one of the following is a useful functional association between fungi and the roots of higher plants?
[A] Mycorrhyza
[B] Lichen
[C] Root Nodules
[D] Cluster roots
Show Answer
Correct Answer: A [ Mycorrhyza]
Notes:
A Mycorrhyza is a composite organism consisting of a fungus (the mycobiont) and a photosynthetic partner (the photobiont or phycobiont) growing together in a symbiotic relationship.
