Question

Which of the following can be made into a crystal?
A.Bacterium
B.Amoeba
C.Virus
D.Sperm

Answer 1

Hint:According to Whittaker’s Five kingdom classification, the kingdoms are Monera, Protista, Plantae, Fungi, and Animalia. Mycoplasma, bacteria form the Kingdom Monera. Paramoecium, amoeba are included in Protista. The kingdom Fungi has molds and yeasts. Eukaryotic photosynthetic plants fall under the category of Plantae. Animalia has multicellular animals. On the other hand, in order to survive, viruses need a host.

Complete answer: 1. The first form of life that appeared on Earth are bacteria. They are microscopic in size and maybe sphere-shaped, rod-shaped, or spiral-shaped. Prokaryotic microorganisms are generally bacteria.
2.Free-living single-celled organisms that move by extending finger-like projections of the protoplasm are known as Amoeba.
3.Sperm is the male reproductive cell or gamete and is involved in sexual reproduction.
4.Viruses are inert outside the host cell and are considered an obligate parasite. Such a virus is called a virion. It lacks biosynthetic machinery and is incapable of generating energy. Unlike typical organisms, it cannot divide or replicate. Irritability and motility are absent in a virus. For its multiplication, it utilizes the synthetic machinery of a living cell of another organism. Viruses can be crystallized and stored indefinitely. In 1935, The Tobacco Mosaic Virus was first crystallized by Stanley.
The fact that viruses are non-living entities without a host made led to the crystallization of viruses.
Thus, the correct option is C) Virus.

Note: Some important facts about virus crystallization are:
1.Crystallization may be defined as the procedure of transforming the virus components into organized particles. X-ray crystallography techniques help in describing the molecular structure of a virus. Thus, the characterization of a virus was done by crystallizing it.
2.Because of the pure nature of a virus crystal, it is preferred for chemical studies.