Question

question 39
which of the following is considered an inorganic molecule?
a carbon dioxide
b glucose
c protein
d sugar
e lipid

question 40
the nitrogenous base found in rna but not dna is.
a thymine
b adenine
c uracil
d cytosine
e guanine

Explanation:

Question 39

Inorganic molecules are generally not based on carbon - hydrogen bonds. Glucose ($\ce{C6H12O6}$), protein, sugar, and lipid are organic molecules as they are carbon - based and have carbon - hydrogen bonds. Carbon dioxide ($\ce{CO2}$) does not have carbon - hydrogen bonds and is an inorganic molecule.

DNA has the nitrogenous bases adenine, thymine, cytosine, and guanine. RNA has adenine, uracil, cytosine, and guanine. So the nitrogenous base found in RNA but not in DNA is uracil.

Answer:

A. carbon dioxide

Question 40