lesson 2 sizes of cells Flashcards
1
Q
what does centi means
A
1/100th
2
Q
1 centimetre (cm) is 1/100th of a…
A
metre
(1cm= 1x10^-2m)
3
Q
if we divide 1cm by 10 equal parts we have….
A
1mm (millimetre)
4
Q
milli means…
A
1/1000th
5
Q
1 millimetre is 1/1000th of a….
A
metre
(1x10^-3m)
6
Q
micro means…
A
1/1 000 000th
7
Q
1 micrometre is 1/1 000 000th of a …..
A
metre
(1μm= 1x10^-6m)
8
Q
what is the unit for micrometres
A
μm
9
Q
how long is a typical human cell
A
10-20 μm
10
Q
what does nano mean
A
1/1 000 000 000th of a metre (billionth
(1x10^-9m)
11
Q
how long is a molecule of haemoglobin
A
5nm