Place the following in the order in which they are found in a host cell: (1) capsid proteins;
(2) infective phage particles; (3) phage nucleic acid.
a. 1, 2, 3
b. 3, 2, 1
c. 2, 1,3
d. 3, 1, 2
e. 1, 3, 2

Verified step by step guidance

1. Understand the life cycle of a bacteriophage, which is a virus that infects bacteria.
2. Recognize that the phage nucleic acid (DNA or RNA) is injected into the host cell first.
3. Next, the host cell machinery is used to produce capsid proteins, which are the protein shells of the virus.
4. Finally, the newly synthesized phage nucleic acid is packaged into the capsid proteins to form infective phage particles.
5. Based on this sequence, determine the correct order of the components as they appear in the host cell.

Key Concepts

Viral Structure and Components

Viruses consist of genetic material (nucleic acid) encased in a protein coat called a capsid. The capsid protects the viral genome and aids in the delivery of the nucleic acid into host cells. Understanding the structure of viruses is crucial for comprehending how they infect host cells and replicate.

Viral Infection Process

The viral infection process involves several steps, including attachment, penetration, and uncoating. Initially, the virus binds to the host cell, followed by the injection of its nucleic acid. The capsid proteins play a role in the assembly of new viral particles after the viral genome is replicated within the host cell.

Order of Viral Components in Infection

In the context of viral infection, the order of components is significant. The phage nucleic acid is injected first into the host cell, followed by the assembly of capsid proteins around the replicated nucleic acid to form new infective phage particles. Recognizing this sequence is essential for answering questions about viral life cycles.