Question

mark this and return
ribosome
lipid envelope
protein tail
capsid protein

Explanation:

1. Ribosomes are cellular organelles not present in viruses, so this is incorrect.
2. The labeled point is not the outer lipid bilayer with spike proteins, so lipid envelope is wrong.
3. Protein tails are found on bacteriophages, not this enveloped virus, so this is incorrect.
4. The label points to the protein shell surrounding the viral genetic material, which is the capsid protein.

Answer:

capsid protein