asked 131k views
3 votes
Which of the following is NOT made of proteins?

A. muscle
B. polypeptide chains
C. hydrogen
D. ligaments

asked
User Barnyr
by
8.4k points

1 Answer

3 votes

Answer:

c. Hydrogen

Step-by-step explanation:

Do I really need to explain...

answered
User Kajman
by
7.2k points

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