11. Study of the chemical nature of cells and tissues is known as__?
[A] Biochemistry
[B] Conchology
[C] Histochemistry
[D] Dermatology
Show Answer
Correct Answer: C [Histochemistry]
Notes:
Histochemistry combines the techniques of biochemistry and histology in the study of the chemical constitution of cells and tissues.
12. Who was awarded the Nobel Prize in Medicine for the discovery of Human Immunodeficiency Virus?
[A] Françoise Barré-Sinoussi
[B] Luc Montagnier
[C] Both 1 & 2
[D] None of these
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Françoise Barré-Sinoussi and Luc Montagnier were awarded the Nobel Prize in Medicine for the discovery of Human Immunodeficiency Virus in 2008.
13. Who gave the theory of Five King of Classification?
[A] RH Whittaker
[B] Ernest Haeckel
[C] Copeland
[D] Carolus Linnaeus
Show Answer
Correct Answer: A [RH Whittaker]
Notes:
The theory of Five Kingdom of classification (Monera, Protista, Fungi, Plantae and Animalia) is given by R. H. Whittaker in 1969.
14. Which sugar is present in DNA?
[A] Heptose
[B] Hexone
[C] Tetrose
[D] Pentose
Show Answer
Correct Answer: D [Pentose]
Notes:
Deoxyribose is present in DNA. It is also known as pentose sugar, consisting of 5 carbon atoms. The chemical formula of deoxyribose is C5H10O4. DNA is the genetic carrier in all living organisms. The full form of DNA is Deoxyribonucleic Acid.
15. Chemotaxis is a phenomenon of__?
[A] swimming away of bacteria
[B] swimming towards a bacteria
[C] swimming away or towards of bacteria in presence of chemical compound
[D] All of the above
Show Answer
Correct Answer: C [swimming away or towards of bacteria in presence of chemical compound]
Notes:
Chemotaxis is a phenomenon of swimming away or towards of bacteria in presence of chemical compound.
16. The cytoplasmic membrane of which of the following organisms contains sterols?
[A] Clostridum
[B] Proteus
[C] Mycoplasma
[D] Bacillius
Show Answer
Correct Answer: C [Mycoplasma]
Notes:
Mycoplasma is a genus of bacteria that do not have a cell wall surrounding the cell membrane.
17. Who coined the term Bryophyta?
[A] Darwin
[B] Brown
[C] Aristotle
[D] Galen
Show Answer
Correct Answer: B [Brown]
Notes:
The term Bryophyta was coined by Robert Brown in 1864. He included algae, fungi, lichens, and mosses under it.
18. By which gas do commercial fruit growers control the ripening time of fruits?
[A] Ethane
[B] Argon
[C] Benzene
[D] Ethylene
Show Answer
Correct Answer: D [Ethylene]
Notes:
Ethylene gas is used by commercial fruit growers to control the ripening time of the fruit.
19. Which fruit is produced by parthenocarpy?
[A] Brinjal
[B] Apple
[C] Banana
[D] Jackfruit
Show Answer
Correct Answer: C [Banana]
Notes:
Banana fruit is produced by parthenocarpy. The process of development of fruit without any prior fertilization is called parthenocarpy.
20. Sweet potato is an example of which root?
[A] Conical roots
[B] Fusiform roots
[C] Tuberous roots
[D] Both 1 and 2
Show Answer
Correct Answer: C [Tuberous roots]
Notes:
Sweet potato is an example of Tuberous roots. Tuberous roots have no distinctive shape, appearing thick and fleshy.
