<p>The question was:</p>
<p>Contains elements H, C, O and N</p>
<p>a) amino acid
b) hydrocarbon chain
c) nitrogenous base
d) carbohydrate
e) protein</p>
<p>the answer key said (e), BUT it could also be (a) as well, no?</p>
<p>isn't amino acid A U G C?</p>
<p>how do u access a free sparknotes test</p>
<p>^You make an account for each test you want to take.</p>
<p>yea it can also be A. sparknotes online tests are full of mistakes (idk about the book). i had a question where it told me that "You selected B. You should have selected B"</p>
<p>LOL that makes me feel better</p>