Biochemistry

Step 1: The correct matches are as follows:
- Acidic amino acid = Glutamic acid (This is correct, as glutamic acid is an acidic amino acid).
- Neutral amino acid = Tryptophan (This is correct, as tryptophan is a neutral amino acid).
- Aromatic amino acid = Tyrosine (This is correct, as tyrosine is an aromatic amino acid).
- Basic amino acid = Lysine (This is correct, as lysine is a basic amino acid).
Step 2: The wrong match is:
- Acidic amino acid = Valine (This is incorrect, as valine is a neutral amino acid, not acidic).
Thus, the correct answer is option (2) "I and II."

Viruses can contain either DNA or RNA as their genetic material, but not both. The type of nucleic acid varies depending on the virus. Some viruses, such as bacteriophages, contain DNA, while others, like the influenza virus, contain RNA. Here's why the other options are incorrect:
- DNA only: While some viruses contain only DNA (e.g., adenoviruses), many viruses contain RNA instead.
- RNA only: Similarly, while some viruses are RNA-based (e.g., retroviruses), there are also many DNA-based viruses.
- DNA and RNA: This is incorrect as no virus contains both DNA and RNA as its genetic material simultaneously. Thus, the correct answer is DNA or RNA, depending on the virus.