sale in biology and cells

Question 1

how do you convert micrometers to millimetres?

Answer 1

x1000

Question 2

why do we use logs?

Answer 2

lograthims put numbered on a human- friendly scale

Question 3

isometry

Answer 3

scaled up and down to perform the same function

Question 4

name the theory that some of the organelles in eukaryotic cells were once prokaryotic microbes

Answer 4

the endosymbiotic theory

Question 5

why are the cells of animals and plants a similar size

Answer 5

size is a limiting factor for cells

Question 6

what is the approximate ‘gap’ in the synapse

Answer 6

0.1 micro metres (100nm)

Question 7

name features of microtubules (tubules polymers)

Answer 7

hollow tubes consisting of alpha-tubulin and beta-tubulin, maintenance of cell shape, 25nm with 15nm lumen

Question 8

name features of microfilaments

Answer 8

two intertwines strands of actin, 7nm, maintenance of cell shape, changes in muscle contraction

Question 9

intermediate filaments

Answer 9

fibrous proteins coiled into cables, 8-12nm, maintenance of cell shape, anchorage of nucleus