In humans, Creutzfeldt-Jakob disease (CJD) is caused by
Correct answer: A. Prions
- A. Prions
- B. Viroid
- C. Retrovirus
- D. Bacteriophage
Explanation
Creutzfeldt-Jakob disease (CJD) in humans is caused by prions, which are infectious proteins. Prions cause neurodegenerative diseases by inducing abnormal folding of certain normal cellular proteins, primarily found in the brain. This misfolding leads to brain damage and the characteristic symptoms of CJD. Other options, such as viroids, retroviruses, and bacteriophages, do not cause CJD: viroids infect plants, retroviruses insert their RNA into host DNA and are related to diseases like HIV, and bacteriophages infect bacteria.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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
The given diagram shows different stages of lysogenic cycle of a temperate bacteriophage
Prions are infectious proteins known to cause
Viruses are considered living organisms because__________?
During the lytic cycle, the function of lysozymes released by phage is to
Transduction is a type of genetic recombination in which DNA transfers from one bacterium toanother through
The causative agent of Hepatitis D is