CATCHING THE KILLER This newspaper article refers to the substance DNA. What is DNA?
A A chemical substance in cell membranes that stops the cell contents leaking out.
B A chemical substance that contains the instructions to build our bodies.
C A protein found in the blood that helps carry oxygen to all the tissues.
D A hormone in blood that helps regulate glucose levels in the b
Answers
Answered by
5
Answer:
B is the answer.........
Answered by
3
Answer:
ANS :- B
Explanation:
It builds our body , it is in chromosomes , it contains information about our body
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