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Virus Morphology and Replication

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Questions and Answers

What is the main reason viruses are considered non-living entities?

They can replicate within living cells

They are parasites of living cells

They lack enzyme systems (correct)

They have nucleic acid genomes

Which statement accurately describes the morphology of viruses?

Viruses only have a helical shape

All viruses have a lipid envelope

The protein coat of viruses is called a nucleic acid core

Viruses have a nucleic acid core surrounded by a protein coat (correct)

What is a characteristic feature of the capsid of a virus?

It houses the nucleic acid core of the virus (correct)

It is capable of independent replication

It is always helical in shape

It is composed of lipids only

Why can viruses only replicate within living cells?

They lack enzyme systems Signup and view all the answers

Which component of some viruses may be derived from their host cell?

Lipid envelope Signup and view all the answers

Which statement accurately describes the nucleic acid genomes of viruses?

Viruses have either DNA or RNA genomes, but not both. Signup and view all the answers

Why is it challenging to develop a broad-spectrum antiviral drug?

Viruses can mutate rapidly and have a wide range of cellular targets. Signup and view all the answers

What is the primary function of the envelope found in some viruses?

To protect the virus from the host immune system Signup and view all the answers

Why do viruses rely on a host cell's enzyme systems for replication?

Viruses lack enzymes of their own. Signup and view all the answers

What sets viruses apart from other living organisms in terms of reproduction?

Viruses require living cells to reproduce. Signup and view all the answers