Tag: bacteria; benefits and harmful effects

Hens egg is a single cell structure inside the shell before the fertilization that can be seen by naked eyes. But after fertilization, the cells fused and divide into two cells inside the shell.

Hence, option B is correct.

The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions, unlike a multicellular organism that consists of multiple cells e.g., yeast, bacteria. Thus, the correct answer is option B.

Bacteria are prokaryotes grouped in Kingdom Monera. Prokaryotes have a pro or primitive karyon. Thus the true nucleus is absent in bacteria. The chromosome, a single, continuous strand of DNA, is localized, but not contained, in a region of the cell called the nucleoid. All the other cellular components are scattered throughout the cytoplasm.

Nucleic acids constitute the genetic material and help in cellular expressions in bacteria, while proteins are important for constitutive activities in the bacterial cells. 15% of bacterial cell is protein, while 7% nucleic acids (DNA and RNA).
So answer is -'nucleic acid and proteins'.

An organism made of just one cell is called an unicellular organism. Bacteria, Amoeba,  Paramoecium and Euglena are some examples of unicellular organisms.

The mucilage capsule present in bacteria serving as an extra covering is present outside the cell because it is a temporary layer surrounding the cell wall and protects the bacteria from antibiotics and dessication.