what is cell wall...........
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Answer:
cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.[1] Cell walls are present in most prokaryotes (except mollicute bacteria), in algae, fungi and eukaryotes including plants but are absent in animals. A major function is to act as pressure vessels, preventing over-expansion of the cell when water enters.
Cell biology
The plant cell
Components of a typical plant cell:
a. Plasmodesmata
b. Plasma membrane
c. Cell wall
1. Chloroplast
d. Thylakoid membrane
e. Starch grain
2. Vacuole
f. Vacuole
g. Tonoplast
h. Mitochondrion
i. Peroxisome
j. Cytoplasm
k. Small membranous vesicles
l. Rough endoplasmic reticulum
3. Nucleus
m. Nuclear pore
n. Nuclear envelope
o. Nucleolus
p. Ribosome
q. Smooth endoplasmic reticulum
r. Golgi vesicles
s. Golgi apparatus (Golgi body)
t. Cytoskeleton
The composition of cell walls varies between species and may depend on cell type and developmental stage. The primary cell wall of land plants is composed of the polysaccharides cellulose
Explanation:
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Answer:
Cell wall is the protective covering of the cell
It protects the cell from the external harmful factor
Explanation:
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