1) A virus generally first encounters a potential host cell primarily by means o
ID: 274025 • Letter: 1
Question
1) A virus generally first encounters a potential host cell primarily by means of interactions with one or the other of which two of the following? Note: points will be deducted for wrong answers.
The endoplasmic reticulum
Cell surface receptors
The phospholipid head groups of the plasma membrane
Attachment factors such as glycans
The clathrin-coated pit
The nuclear membrane
The nuclear pore complex
The endosome
2) Which one or more of the following statements is/are true about viral attachment factors and receptors? Note: points will be deducted for wrong answers.
Glycoproteins are the only components of viruses that can interact with attachment factors and receptors
Binding of attachment factors is usually irreversible, whereas receptor binding is usually reversible
Receptor binding is more specific than attachment factor binding
Receptor binding actively promotes viral penetration, whereas attachment factor binding does not
Some viruses bind to two or more cell surface receptors to initiate the viral entry process.
a.The endoplasmic reticulum
b.Cell surface receptors
c.The phospholipid head groups of the plasma membrane
d.Attachment factors such as glycans
e.The clathrin-coated pit
f.The nuclear membrane
g.The nuclear pore complex
h.The endosome
2) Which one or more of the following statements is/are true about viral attachment factors and receptors? Note: points will be deducted for wrong answers.
a.Glycoproteins are the only components of viruses that can interact with attachment factors and receptors
b.Binding of attachment factors is usually irreversible, whereas receptor binding is usually reversible
c.Receptor binding is more specific than attachment factor binding
d.Receptor binding actively promotes viral penetration, whereas attachment factor binding does not
e.Some viruses bind to two or more cell surface receptors to initiate the viral entry process.
Explanation / Answer
A virus generally first encounters a potential host cell primarily by means of interactions with one or other of which two of the following?
Cell surface receptors and attachment factors such as glycan
Which one of the following statement is true about viral attachment factors and receptors?
Glycoproteins are the only components of viruses that can interact with attachment factors and receptors.
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