What is the viral envelope composed of?
Correct answer: C. Lipids and proteins
- A. Proteins
- B. Glycoproteins
- C. Lipids and proteins
- D. All of the above
Explanation
The viral envelope is a lipid-based layer that surrounds some viruses, derived from the host cell's membrane during viral replication. It is not made entirely by the virus but is borrowed from the host, with embedded viral glycoproteins that protrude from its surface. These glycoproteins are crucial for the virus to recognize and attach to specific receptors on host cells, allowing entry and infection. The envelope also helps the virus evade the host immune system, as the host-derived lipids can mask viral components, making it less visible to immune defenses.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Biodiversity and Variety of Life
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Biodiversity and Variety of Life questions
What are the subunits of capsids?
Identify the true fact about the virus:
A common polyhedral capsid shape of viruses is a _.
It refers to the final changes within an immature virion that result in a virus particle
All of the following descriptions concerning viral multiplication and nucleic acids are true EXCEPT that:
Which of the following is not true for virions?