December 13, 2005 at 7:11 am #2912backtoschoolParticipant
Please bear with my thought process on this one. I’m hoping someone can confirm if I’m getting it or not.
I’ve recently learnt about cell membrane transport. One of the questions at the end of the chapter deals with an airborne supervirus being inhaled and asks the specific structure through which the virus entered the cell and the transport mechanism used. Is it safe to assume it wouldn’t be through osmosis because osmosis is the diffusion of water? If it’s airborne is it safe to assume bulk transport wouldn’t be used? I’m left with diffusion or facilitated diffusion. I’m not so sure if it’s facilitated diffusion because even though the cell didn’t recognize it as harmful I’m not sure it would mistake the virus for something extra that it needs. That leads me to believe the transport mechanism used is diffusion. Am I on the right track?
December 13, 2005 at 6:36 pm #34901mithParticipant
Try endocytosis and injection
December 14, 2005 at 8:07 pm #34974MrMisteryParticipant
Viruses do not diffuse through the membrane, they are too big. Generally each virus has it’s own way of getting in the cell. I have no idea what the answer the want is…
But for your knowledge, each virus has it’s own mechanism.
December 15, 2005 at 10:02 am #35024kaylinParticipant
hey not endocytos
4.originating genom of virus
December 16, 2005 at 9:10 am #35078Geordie BoyParticipant
I would have said endocytosis in most animal viruses. The cell wraps it in a vesicle and tries to digest it, which releases the virons RNA or DNA
December 16, 2005 at 9:53 am #35079biostudent84Participant
When learning about how Viruses get their genetic material into the cell, the bacteriophage is usually used to show one way.
http://www.humnri.com/Humex/Submission/ … ophage.jpg
The “feet” of the bacteriophage (shown in the picture) rest on the cell membrane. Then the “legs” have the virus “sit down” to press the Tail Pins into the membrane. Then the bacteriophage injects its genetic material directly into the cytoplasm.
December 16, 2005 at 12:24 pm #35082victorParticipantquote Geordie Boy:
Mostly like that and it’s thru the receptors and anti-receptors mechanisms…
January 2, 2006 at 10:32 am #36010laraParticipant
the steps-attach insert genetic material etc.is ok for phages.but in animal viruses a process similar to endocytosis is involved called viropexis.
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