Cell-Structure-And-Function-Cell-The-Unit-Of-Life-3
Lysosome:
- Lysosomes are membrane-bound organelles found in animal cells.
- They contain enzymes responsible for breaking down cellular waste and debris.
- Lysosomes play a crucial role in cellular digestion and recycling of biomolecules.
Endoplasmic Reticulum (ER):
- The endoplasmic reticulum is a network of membranes found in eukaryotic cells.
- There are two types: Rough ER, with ribosomes attached, involved in protein synthesis and processing; and Smooth ER, involved in lipid synthesis and detoxification.
Golgi Apparatus (Golgi Body):
- The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids produced in the endoplasmic reticulum.
- It consists of flattened membranous sacs called cisternae.
Nucleus:
- The nucleus is a membrane-bound organelle found in eukaryotic cells.
- It contains the genetic material (DNA) and is the control center of the cell, regulating gene expression and cell activities.
- The nucleolus within the nucleus is involved in ribosome production.
Heterochromatin:
- Heterochromatin is a tightly packed form of chromatin (DNA and associated proteins) within the cell nucleus.
- It is characterized by condensed and inactive DNA, typically associated with genes that are not actively transcribed.
