The walls of xylem cells are lignified (strengthened with a substance called lignin ). This allows the xylem to withstand pressure changes as water moves through the plant.
The cell membrane is flexible because of the presence of oil like substances called phospholipids, which gives it a fluid nature. While as the cell walls are rigid because of the presence of the thick layers of the substances like cellulose in plants, chitin in fungi and peptidoglycon in bacteria.
Organs are made up of many tissues
Question:
The organelle shown consists of a stack of flattened membranes.
What is the primary function of this organelle?
- attaching amino acids to tRNA molecules
- long-term storage of molecules in the cell
- production of large and small ribosomal subunits
- repackaging proteins for export from the cell
Answer:
- repackaging proteins for export from the cell
Explanation:
The organelle consisting of a stack of flattened membranes is the Golgi apparatus.
The Golgi apparatus is like the packaging centre of the cell. It modifies, sorts, and packages proteins and from the endoplasmic reticulum to be stored in the cell or released outside the cell
Answer:
During the process of succession the successor develops first
