The first virus to be crystallised, proving that infectious agents could behave like chemicals, was
Correct answer: D. tobacco mosaic virus
- A. influenza virus
- B. poliovirus
- C. HIV
- D. tobacco mosaic virus
Explanation
Wendell Stanley crystallised tobacco mosaic virus in 1935 and the crystals remained infectious, blurring the line between living and non living. The achievement earned him a Nobel Prize and started modern virology.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
Practise Acellular Life
342 free Acellular 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 Viruses questions
Viruses that infect bacteria are called
Viruses can only be grown in the laboratory in
The first scientist to show that the cause of tobacco mosaic disease passes through filters that retain bacteria was
A typical bacteriophage consists of
The lytic cycle of a bacteriophage ends with
Which of the following diseases is caused by a virus?