Zoology 570- Unit 4 test questions and answers(with diagrams).
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Course
Nurs 570
Institution
Nurs 570
what is kinesin used for?
walk along microtubules (towards plus end)
what type of distances do kinesin move items?
long distances
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what are the two types of dine...
Zoology 570- Unit 4 test
questions and answers(with
diagrams)
what is kinesin used for?
walk along microtubules (towards plus end)
what type of distances do kinesin move items?
long distances
Previous
Play
Next
Rewind 10 seconds
Move forward 10 seconds
Unmute
0:01
/
0:15
Full screen
Brainpower
,Read More
what are the two types of dineins?
cytoplasmic, cilia/flagella
what do cytoplasmic dinein do?
move inwards in cell
what is an example of cilia movement?
moving dust out of lungs
what is an example of flagella?
sperm
how does dynein bind to the molecules its moving?
1.5 million Da complex on molecule with Arp
section
what are axons?
long, singular molecule
,how do things move out of axons?
kinesin
at what rate do kinesin move things out of axons?
1 uM / sec
how do things move into axons?
dynein
at what rate do dyneins move things into axons?
2 uM / sec
what is responsible for slow transport on axons?
kinesin with low processivity
how does the 9+2 arrangement work?
dynein connect pairs of microtubules
why does dextrocardia occur?
cilia doesn't move fluid in cell (concentration
gradients can't form, cell has to 'flip a coin' to
choose side of body)
how is muscle structured?
cells fused together with muscle fiber
, what are muscle fibers made of?
myofibril
what are myofibrils made of?
sarcomeres
what are the different bands of sarcomeres?
I/Z/A/H bands
which bands shrink during muscle contraction?
I and H bands
how are thick filaments orientated
across Z bands?
pointed-barbed LINE barbed-pointed
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