Lecture 9

Question 1

cytoskeleton provides

Answer 1

structural support (cell shape)
framework for positioning organelles
intermediate filaments

Question 2

cytoskeleton is a protein filament complex made up of

Answer 2

microtubules
microfilaments
intermediate filaments

Question 3

microtubules

Answer 3

tubulin
hollow
rigid tubular strucutre

Question 4

microfilaments

Answer 4

actin
flexible helical filament with ATP
electrical charge

Question 5

intermediate filaments

Answer 5

mechanical strength
combination of microtubules and actin

Question 6

result of the TCA cycle

Answer 6

1 fadh2
2 nadh

Question 7

role of o2 in etc

Answer 7

terminal electron acceptor (oxidizing agent)

Question 8

what is the limiting factor in oxidative phosphorylation

Answer 8

o2

Question 9

atp yields

Answer 9

2 net ATP in glycolysis
2 net ATP in TCA
34 net ATP in oxidative phosphorylation

Question 10

which cells in the body do not have mitochondria

Answer 10

erythrocytes

Question 11

mitchondria have their own

Answer 11

dna
ribosomes

Question 12

leaky etc results in

Answer 12

lost electrons results in fewer H+ pumped
less ATP synthase activity
less ATP generated

Question 13

what does UCP1 do (therogenin)

Answer 13

alternative flow of protons back to the inner mitochondrial matrix (mictochondrial membrane of brown adipose tissue)

Question 14

reults of tca cycle

Answer 14

• oxidation of two carbonds of CO2
• energy captured by electron transfer to nadh and fadh2
• 1 gtp