-The Nucleus Contains genetic material, including DNA, which controls the cell’s activities.

-Cell membrane’s structure is permeable to some substances but not to others. It therefore controls the movement of substances in and out of the cell.

-Mitochondria Organelles  contain the enzymes for respiration, and where most energy is released in respiration.

-Ribosomes A tiny organelle where protein synthesis occurs.

-Chloroplast contains the green pigment, chlorophyll, which absorbs light energy for photosynthesis. Contains the enzymes needed for photosynthesis.

-Cell wall is made from cellulose fibres and strengthens the cell and supports the plant.

-Permanent vacuole is filled with cell sap which helps keep the cell turgid.

Nucleus, in biology, a specialized structure occurring in most cells (except bacteria) and separated from the rest of the cell by a double layer. 

This membrane seems to be continuous with the endoplasmic reticulum (a membranous network) of the cell and has pores.

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. 

Nucleoli are small bodies often seen within the nucleus; they play an important part in the synthesis of ribonucleic acid (RNA) and protein.

A cell normally contains only one nucleus.


Nuclues parts
Nuclear Envelope

Location: The nuclear envelope, also known as the nuclear membrane, encloses the nucleus and nucleolus.

Structure: The nuclear envelope is composed of a phospholipid bilayer with many pores (small holes) that allow RNA and other materials to enter and exit the nucleus. 

Function: The many pores in the nuclear envelope allow it to decide what enters and exits the nucleus.

Location: The nucleolus is located inside of the nucleus. It is surrounded by the nuclear envelope. It is NOT membrane- bound.

Structure: The nucleolus is a dense region in the nucleus composed of DNA, RNA, and proteins.

Function: The nucleolus makes ribosomes. This is a very important job inside of the cell.

Location: The chromosomes are located inside of the nucleus.

Structure: Chromosomes are composed of nucleotides, which bond together to form a double helix. This double helix is  tightly wrap around a protein to form a chromosome.  The unraveled material from a chromosome that floats around in the nucleus is known as chromatin.

Function: Chromosomes contain the genetic information (DNA) of the cell. The chromosomes are the code for all of the  functions that occur in a cell.

- Which is a part of a continuous membrane organelle 

- within the cytoplasm of eukaryotic cells

- that plays a central role in the synthesis of proteins.

- It's named for the appearance of its outer surface, 

- which is studded with protein-synthesizing particles known as ribosomes. 

- RER is present in both animal and plant cells

 

Smooth endoplasmic reticulum (SER) Is similar to the Rough endoplasmic reticulum but without the ribosomes that are attached to the surface of the RER. It’s a meshwork of fine disk-like tubular membrane vesicle (a sac like structure)and it’s part of a continuous membrane organelle within the cytoplasm of eukaryotic cells. It’s involved in the synthesis and storage of lipids including cholesterol and phospholipids which are used in the production of new cellular membrane 

Golgi bodies