Question

Choose the correct answers from the alternatives given.
Which of the following groups of components is found in all viruses?

• A. Envelope, nucleic acid, capsid
• B. DNA, RNA and proteins
• C. Proteins and a nucleic acid
• D. Proteins, nucleic acids, carbohydrates, and lipids

Answer 1

Answer: (C)

Proteins and a nucleic acid

• Generally, plant viruses are single-stranded RNA viruses.
  
• Bacteriophages are generally double-stranded DNA viruses.
  
• The protein coat of the virus is called Capsid made of small subunits called Capsomeres. These capsomeres are arranged in helical or polyhedral geometric forms.
  

Hence, the correct answer is 'proteins and a nucleic acid'.