Cytoplasm
Inside the membrane, filling the cell, is the cytoplasm. It is what the organelles are embedded in.
Cytoplasm
The jelly-like fluid part held within a cell, apart from the cell organelles, is called the cytoplasm. It contains organic as well as inorganic substances.
Its functions
- Giving the cell its shape
- Holding the cell organelles
- Carrying out various metabolic processes
Using the word "organelle" correctly
The structures sunk in the cytoplasm within a cell are what get called cell organelles. Some organelles are surrounded by membranes — mitochondria, the nucleus, the endoplasmic reticulum and the Golgi body are examples.
"Apart from" is the important phrase
The cytoplasm is not everything inside the membrane — it is the material the organelles sit in, not the organelles as well. Which is why "there are mitochondria in the cytoplasm" is the correct way to put it.