1.3 - Eukaryotic Cells

What are the holes in the nuclear envelope called?

nuclear pores- to transfer molecules in and out of the cell.

Eukaryotic cells have...

organelles - specialized subunits within a cell that perform specific functions.

Meaning of compartmentalized:

Meaning they are separated by single or double membranes.

Advantages of compartmentalization:

1. Enzymes and substrates for particular processes can be held together in higher concentration. 2. Substances that could damage the cell can be held safely inside the membrane of an organelle. Ex: lysosomes 3. Conditions such as pH can be maintained at an ideal level for a particular process. 4. organelles can be moved around a cell.

The organelles in a Eukaryotic cell are all...

Compartmentalized

What does the nucleus contain?

Contains the cells DNA. The DNA is wrapped around histone proteins and coiled into chromatin and chromosomes.

Where are the ribosomes made?

In the nucleolus - located in the nucleus

Eukaryotic cells have a (more complicated/ less complicated) Internal cell structure than prokaryotic cells.

More complicated

What is the nucleus surrounded by in a eukaryotic organelle?

a double membrane called the nuclear envelope.

What is the rER made of?

it is made of flattened membrane sacs called cisternae.