structure of mitochondria Flashcards
what is the cristae
highly folded inner membrane
name A and B
A- atp synthase enzymes
B- intermembrane space
name all the components of mitochondria
cristae
atp synthase enzymes
fluid filled matrix
mitochondrial envelope - outer and inner membrane
intermembrane space
what is held in the fluid filled matrix
mitochondrial ribosomes- similar to prokaryotic ribosomes
enzymes
loop of mitochondrial dna
describe the outermembrane of mitochondria
smooth
permeable to several molecules
describe the inner membrane
less permeable
folded into cristae
site of electron transport chains
location of atp synthase enzymes
why does the intermembrane space have a low ph
high concentration of hydrogen ions/ protons
does having more protons increase or decrease ph
the more protons the lower the ph
what type of solution is the fluid filled matrix
aqueous gel like solution
why is the cristae having a high sa useful for mitochondria
can hold many atp synthase enzymes.
More active cells can have a tightly packed cristae to synthesis more atp due to a higher sa
what do atp synthase catalyse
the process of atp synthesis from adp and pi
why is the intermembrane space useful for mitochondria
it is close to the matrix, therefore reduced nad and fad can easily deliver protons to the etc
describe the atp synthase structure
the base piece is embedded in the inner membrane with a proton channel
has an axle
head piece
what do examiners prefer you to say, outer membrane or mitochondrial envelope.
Envelope, because it consists of two membranes
how is the membrane of mitochondrion related to the function
membranes contain electron transport chains and atp synthase provide site for oxidative phosphorylation and chemiosmosis
allow formation of proton gradient
