Chapter:7 Cell Structure

Cell organelles.

• Cell membrane
• Cytoplasm
• Cytosol
• Nucleus
• Nucleolus
• Mitochondrion
• Lysosome
• Ribosome

• Cell membrane
• Cell wall
• Cytosol
• Nucleus
• Nucleolus
• Mitochondrion
• Lysosome
• Ribosome
• Chloroplast
• Large central vacuole

• Keeps the cytoplasm in place.
• Controls movement of substances in and out of the cell.
• Porus-has pores meaning it’s selectively permeable.
• Semi/Selectively permeable allows only some substances in and out depending on size.

The cell membrane controls the movement of substances in and out of the cell.

It porus- has pores meaning it’s selectively / semi permeable.

• Surrounded by a membrane called the nuclear membrane.
• The nuclear membrane is porus to allow communication between the the nucleus and the rest of the cell.
• There’s a substance inside the nucleus called nucleoplasm.
• The nucleolus is also inside the nucleus.
• Extra 3p: (Cells are always either dividing or preparing to divide. When the cell isn’t actively dividing these chromosomes aren’t visible. Instead, appear as a dense mesh of threads- referred them as chromatin. )

The nuclear membrane is the membrane that surrounds the nucleus.

The nuclear membrane is porus to allow communication between the nucleus and the rest of the cell.

Nucleoplasm- substance inside the nucleus.

Cells are always either dividing or preparing to divide.

The chromosomes aren’t visible when the cell isn’t actively dividing.

The dense mesh of threads are referred then as chromatin.

In the nucleus.