1. viruses (1 point) have large central nuclei. vary greatly in size and structure. rarely contain dna or rna. can be seen with a basic compound light microscope.

Viruses vary greatly in size and structure. Viruses are small particles which are neither living nor dead. they are having RNA or DNA and a protein coat. They have different size and structure. Viruses attacking bacteria called bacteriophages have complex structure and size.