Viral envelopes are sometimes made of fats and what?\nOptions:\n- (A) cellulose\n- (B) glucose\n- (C) Energy.\n- (D) protein\n- (E) viral particles\n- (F) Energy\n- (G) food\n- (H) bacteria OK. Let's think hard:
User
Some viruses have an envelope of phospholipids and proteins. Phospholipids are body fats, too. Some viruses have an envelope of fats and proteins.
So, the final answer is (D).
Assistant