Organelles Flashcards
role of kinesins
move cargo towards cell periphery
role of dyneins
transport cargo towards cell centre
3 things the cytoskeleton components
actin filaments, microtubules, intermediate filaments
what is the cytosol
the liquid inside the cytoplasm
4 functions of the cytoskeleton
maintains shape, helps motion, intracellular transport and aid in mitosis
how do microtubules help in mitosis
form spindal fibers
role of actin filiments
allows cell to change shape and move
function of intermediate filaments
provide physical strength
what are vesicles coated with to fuse with the gogi?
COPII
what are vesicles coated with to fuse with the ER?
COPI
How do the folds in cristae allow for better ATP production
High surface area to allow for many proton gradients
function of a lysosome
digest intra/extracellular debris
function of proteasomes
degrade damaged proteins
how to proteasomes work
using proteolysis
function of peroxisomes
detoxify harmful substances
where are lysosomes found
cytoplasm
are lysosomes membrane bound?
yes
are proteasomes membrane bound?
no
are peroxisomes membrane bound?
yes
where are peroxisomes found
cytoplasm
where are proteasomes found
freely inside cell including nucleus
how to proteasomes know to degrade protiens
proteins are tagged with ubiquitin
what molecule do peroxisomes primarily break down
fatty acids and toxic substances like ethanol
SIMPLE - Whats lysosome remembered as?
Recycling centre
SIMPLE - whats a proteasome remembered as?
shredder
SIMPLE - whats a peroxisome remembered as?
detox centre or cleaning crew
purpose of glycolysis
break down glucose into pyruvate creating atp and NADH
where does glycolysis occur
in the cytosol
all products of glycolysis
2 pyruvate, 2 ATP, 2 NADH
what happens to pyruvate in aerobic conditions
converted into acetyl-CoA to enter krebs cycle
purpose of krebs cycle
produces NADH and FADH
where does the krebs cycle occur
matrix of the mitrocondria
role of NADH/FADH in ETC
donate high energy e creating a proton gradient for ATP production
where does the ETC occur
inner mitochondrial membrane
how does ATP synthase create ATP
H+ flows down their gradient where atp synthase uses this energy to ADP+P=ATP
what are the two stages of photosynthesis
Light dependent reaction and calvin cycle
where does the light dependent reaction occur
thylakoid membrane
purpose of light dependent reaction
produce ATP and NADPH for the calvin cycle
what is split during the light dependent reaction
Water - H2O
role of chlorophyll in the light dependent reaction
excites e- to start the ETC
purpose of calvin cycle
use ATP and NADPH to change CO2 into glucose
where does the calvin cycle occur
stroma