Kinesin hyrolyses 80 atp per second. each atp takes vesicle 8nm forward.
how long take kinesin to transport a vesicle 20um? how long to travel 10cm?

The correct answer is 156250 seconds.

Explanation:

The size of a vesicle given is 20 micrometer.  

The rate of ATP hydrolysis is 80 per second

Each of the ATP takes the vesicle 8 nm forward, that is,  

8 nm = 8 * 10^-9 m

There is a need to transport a vesicle of 20 micrometer or 20 * 1000 nm

Thus, the required ATP will be = 20 * 1000 / 8 = 2500

1 ATP takes 1/80 sec, thus, 2500 ATP will take = 2500 * 1/80 = 31.25 seconds

Now, in order to travel 10 cm or 10 * 10000000 nm

The ATP required = 10 * 10000000 / 8

Time taken by each ATP = 1/80

Hence, time for 10 cm travel = 10 * 10000000/8 * 1/80 = 156250 seconds.  

segmentation=endoskeleton=backbone=coelom=tissues

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this