asked 121k views
5 votes
Which substances contain nitrogen?

A. proteins
B. carbohydrates and fats
C. proteins and carbohydrates ​

2 Answers

3 votes

Answer:

A. Proteins

Step-by-step explanation:

Urea is a by product of protein digestion.

answered
User Marcoow
by
7.6k points
1 vote

Answer:

protiens

Step-by-step explanation:

in protiens in cells have nightogen

answered
User Universal Grasp
by
7.9k points

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