Biological molecules

Which of the rows, A to D, correctly identifies the presence or absence of nitrogen, phosphorus, and sulfur in the given biological molecules?

	Biological molecule	Nitrogen ( $N\text{N}$ )	Phosphorus ( $P\text{P}$ )	Sulfur ( $S\text{S}$ )
A	ATP	Present	Present	Absent
B	Chitin	Absent	Absent	Absent
C	Keratin	Present	Present	Absent
D	Glucagon	Present	Present	Present

Row A

Row B

Row C

Row D

Which of the rows, A to D, correctly identifies the presence or absence of nitrogen, phosphorus, and sulfur in the given biological molecules?

	Biological molecule	Nitrogen ( $N\text{N}$ )	Phosphorus ( $P\text{P}$ )	Sulfur ( $S\text{S}$ )
A	ATP	Present	Present	Absent
B	Chitin	Absent	Absent	Absent
C	Keratin	Present	Present	Absent
D	Glucagon	Present	Present	Present

Row A

Row B

Row C

Row D

Biological molecules Questions