The chemical composition of several nucleic acid molecules i

The chemical composition of several nucleic acid molecules in chart. Decide whether each is DNA or RNA and single-stranded or double-stranded.

molecule

%A

%G

%T

%C

%U

DNA/RNA?

single/double?

a

33

17

33

17

0

b

33

33

17

17

0

c

26

24

0

24

26

d

15

35

15

35

0

e

21

39

22

18

0

f

17

38

0

30

15

g

30

20

15

20

15

h. Which molecule has the higher melting temperature, a or d ?

molecule	%A	%G	%T	%C	%U	DNA/RNA?	single/double?
a	33	17	33	17	0
b	33	33	17	17	0
c	26	24	0	24	26
d	15	35	15	35	0
e	21	39	22	18	0
f	17	38	0	30	15
g	30	20	15	20	15

Solution

a is DNA because it contain ATCG nitrogen bases.

,b is DNA ,because it contain ATGC nitrogen bases

cis RNA,because it contain AUGC nitrogen bases

d is DNA,because it contain ATCG nitrogen bases   

e is DNA because it contains ATGC nitrogen bases

.cis single standered and rest are double standered .

d is having high melting temprature.

g is containing both thymine and urecil so five nitrogen bases are not forming DNA or RNA.