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Viroid

viroid

(Science: plant biology, virology) Extremely small viruses of plants. Their genome is a 240-350 nucleotide circular rNA strand, extensively base paired with itself, so they resist RNAase attack.

at one time the term was also used casually of self replicative particles such as the kappa particle in paramecium.


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Living or not? (viruses,viroids and prions).

... organism is the one with protein or nucleic acid or both and imposes its own form and function into another, i would like to say that prions,viroids and viruses ARE LIVING as a prion changes a normal protein to function like itself, a viroid corrupts the normal RNA or DNA TO function like ...

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by Sumanth001
Sun Jun 30, 2013 3:30 am
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
Replies: 15
Views: 4550

Biology HW HELP?

... (A) species (B) genus (C) family (D) archetype 5. A virus that infects a bacterium is known as: (A) caspid (B) bacteriophage (C) prion (D) viroid 1. Which of the following is not an example of a fossil? (A) a hardened paw print left by an animal (B) an insect trapped in amber (C) a petrified ...

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by safasoliman
Tue May 25, 2010 1:27 am
 
Forum: General Discussion
Topic: Biology HW HELP?
Replies: 3
Views: 5934

"Twenty questions"-biology game

virus? viroid? protein? aminoacid? sugar? lipid? nucleic acid?

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by MrMistery
Wed Aug 30, 2006 6:10 am
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 316390

microb problems

... flask would contain beta_galactosidase? a. A b. B c. C d. A and B e. B and C My answer: e because lactose can be degraded to galactosidase. 4. Viroid contain a. only RNA b. only DNA c. only protein d. RNA and DNA My answer: d I read that viroid consist only of nucleic acid, not sure if it means ...

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by kabuto
Sun Apr 16, 2006 12:55 pm
 
Forum: Microbiology
Topic: microb problems
Replies: 4
Views: 3027

"Twenty questions"-biology game

Viroid, right?

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by MrMistery
Wed Mar 29, 2006 6:01 pm
 
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 316390
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