NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The prokaryotic cell has this structure that helps to protect it from its environment.
A
cell membrane
B
cell wall
C
flagellum
D
capsule
Explanation: 

Detailed explanation-1: -All prokaryotic cells have a stiff cell wall, located underneath the capsule (if there is one). This structure maintains the cell’s shape, protects the cell interior, and prevents the cell from bursting when it takes up water.

Detailed explanation-2: -Most prokaryotes have a peptidoglycan cell wall and many have a polysaccharide capsule (Figure 4.2. 1). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment.

Detailed explanation-3: -A prokaryotic cell structure is as follows: Capsule– It is an outer protective covering found in the bacterial cells, in addition to the cell wall. It helps in moisture retention, protects the cell when engulfed, and helps in the attachment of cells to nutrients and surfaces.

Detailed explanation-4: -The cell wall provides an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. Many bacteria also have an outermost layer of carbohydrates called the capsule. The capsule is sticky and helps the cell attach to surfaces in its environment.

Detailed explanation-5: -Almost all prokaryotes have a cell wall, a protective structure that allows them to survive in both hyper-and hypo-osmotic conditions.

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