3.2.1 Cell Structure Flashcards
What are Eukaryotic Cells?
Eukaryotic cells contain a nucleus and membrane-bound organelles
What is the STRUCTURE of the Cell-Surface Membrane
- Surrounds a cell
- Made of phospholipids and proteins
What is the FUNCTION of the Cell-Surface Membrane
Controls the movement of substance (ions, molecules) into and out of the cell
What are the STRUCTURES of a Nucleus 4
Nuclear Envelope - Double plasma membrane with pores which controls what goes in and out of the nucleus
Nucleoplasm - Similar to the cytoplasm. Contains Chromatin
Nuclear Pores - Allows the passage of large molecules such as mRNA out of the nucleus
Nucleolus - Manufactures ribosomal RNA and assembles ribosomes
What is the FUNCTION of a Nucleus
- Acts as the control centre through the production of mRNA and rRNA
- Retains genetic material to from DNA na d chromosomes
- Manufactures of rRNA and ribosomes
What is the STRUCTURE of Mitochondria
- DOUBLE MEMBRANE STRUCTURE
- Outer Membrane - Controls what goes in and out of the mitochondria
- Inner Membrane - Folds to from Cristae - Cristae
- Matrix
- Mitochondrial DNA is present so that the mitochondria can produce their own ribosomes
What is Cristae (Mitochondria)
Cristae is an extension of inner membrane. It has a large Surface Area for the attachment of enzymes and other protiens that are involved in areobic respiration
What is the Matrix (Mitochondria)
Remainder of the mitochondria. (Fluid) and contains enzymes for aerobic respiration, producing ATP.
What is the FUNCTION of Mitochondria