Mitochondria Flashcards
Why do mitochondria have a large SA?
For attachment of proteins needed for the final stages of aerobic respiration
What is the mitochondria the site of?
Aerobic respiration in eukaryotic cells
What does the inner membrane contain?
Protein complexes vital for the later stages of aerobic respiration embedded in it
What shape organelles are mitochondria?
Rod-shaped organelles
Are mitochondria large or small?
Large (1-2 micrometers in length)
What are mitochondria visible with?
Light and electron microscopes
What type of membrane does mitochondria have?
Double membrane
What type of membranes are they?
2 phospholipid membranes
What is the inner membrane like?
Folded, less permeable, the location of ATP synthase
What is the outer membrane like
Smooth, permeable to several smooth molecules
What type of solution is the matrix?
An aqueous solution
Where is the matrix found?
Within the inner membranes of the mitochondrial
What is the matrix formed by?
The cristae
What does the matrix contain?
Enzymes needed for aerobic respiration- producing ATP
Contains ribosomes and circular mitochondrial DNA
What type of pH does the intermembrane space have and why?
A low pH- high concentration of protons
What is the concentration gradient across the inner membrane formed during?
Oxidative phosphorylation
What is the function of the mitochondria?
To synthesise ATP- occurs during the last stage of respiration called oxidative phosphorylation
What does the mitochondria rely on?
Membrane proteins that make up the electron transport chain and the ATP synthase enzyme
What can the membrane do?
Hold many electron transport chain proteins and ATP synthase enzymes
How does the membrane have a large SA?
Due to the cristae
What do more active cell types have more of?
Have larger mitochondria with longer and more tightly packed cristae to enable the synthesis of more ATP due to the larger SA
What does the number of mitochondria in each cell depend on?
The cell activity
