Question

A DNA model was built using the scale
2 cm :0.0000001 mm. If the model of the DNA chain
is 17 cm long, what is the length of the actual chain?

Answer 1

Answer:

(a) Let x cm be the length o python

ACQ,

60% of x=558

⇒

100

60

×x=558

⇒x=

60

558×100

⇒x=930

(b) We have,

length

mass1

=

length1

mass2

∴

2

24

=

3

mass2

⇒mass2=

2

24×3

=36kg

(c) Length of actual chain 0.000001 mm is measured as 2 cm in the model.

Hence, length of actual chain when length of chain is 17 cm in the model

=

2

0.0000001

×17

=0.00000085mm