Medical Quiz
Biology Quiz

The three particles that make up an atom are ___.

A. protons, neutrons, and isotopes

B. neutrons, isotopes, and electrons

C. positives, negatives, and electrons

D. protons, neutrons, and electrons

Select your answer:
A  B  C  D  E 


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Other quiz: Food and Nutrition

How many nutrients are there in all?

A. 6

B. 5

C. 4

D. 3