Question

Bacteria are considered more as plants than animals because of the presence of
(a) DNA
(b) Plasma membrane
(c) Cell wall
(d) Mitochondria

Answer 1

Hint: It is a layer present outside the cell membrane that provides structural support. This strong and flexible layer surrounds the cell membranes and helps to counteract the osmotic pressure so that the cell does not burst when water diffuses into it.

Complete answer:The cell wall is the main feature that is present in both bacteria and plants. The cell walls in plants and bacteria perform a similar function but made up of different materials. The bacterial cell wall is made up of peptidoglycan which is made from polysaccharides chain cross-linked by containing D- amino acids. However, plant cell walls are made up of cellulose which is the strong fibers of cellulose.

Additional information:-In bacteria, the large membrane-bound structures are absent such as the nucleus, mitochondria, chloroplast, etc.
1. Bacteria constitute a large domain of prokaryotic microorganisms.
2. They mostly live in symbiotic and parasitic relationships with plants and animals.
3. They do not have a membrane-enclosed nucleus.
4. The genetic material of bacteria is generally a single circular bacterial chromosome of DNA located in the cytoplasm.
5. In some bacteria, an S-layer of rigidly arranged protein molecules covers the outside of the cell.
6. They have rigid protein structures called flagella which are used for motility.

So, the correct answer is ‘cell wall’.

Note:1.Penicillin is an antibiotic produced by a fungus called Penicillin inhibits a step in the synthesis of peptidoglycan and is able to kill bacteria.
2. Some bacteria such as cyanobacteria and purple bacteria are autotrophic. They can synthesize their food by photosynthesis.