AAMC exam 8 #140

[kabtq9s]

---

Members do not see this ad.

Guys I'm a little confused about this question. Correct me if I'm wrong but the distortion in the plasma membrane is caused by the virus leaving the cell which also distorts/ damages the microfilaments. However the question is making it sound as if the microfilaments are assisting the virus in leaving the cell which doesn't appear to me to be true.

Any comments are appreciated

 

[CodeBlu]

Guys I'm a little confused about this question. Correct me if I'm wrong but the distortion in the plasma membrane is caused by the virus leaving the cell which also distorts/ damages the microfilaments. However the question is making it sound as if the microfilaments are assisting the virus in leaving the cell which doesn't appear to me to be true.

Any comments are appreciated

The question simply states, which of the following would suggest/support that microfilaments are involved in exocytosis of viral particles? (aka, moving along the microfilament highway on its way out of the cell).

So if the rate of microfilament polymerization is proportional to the rate of exocytosis of viral particles, then microfilaments are involved in exocytosis of viral particles. Basically the question asked...

What would make you believe that A is dependent on B?
-Answer, if the rate of A is proportional to the rate of B, they are dependent on one another.

(This is part of the reason why, arts and humanities kids do really well on the MCAT)

 

[movax]

Guys I'm a little confused about this question. Correct me if I'm wrong but the distortion in the plasma membrane is caused by the virus leaving the cell which also distorts/ damages the microfilaments. However the question is making it sound as if the microfilaments are assisting the virus in leaving the cell which doesn't appear to me to be true.

Any comments are appreciated

This is pure analysis and knowing how to read experiments. Let's say I tell you: "Microfilaments are involved in the release of virus particles."

Now look at the choices:

A - Exocytosis of viral particles is proportional to rate of microfilament polymerization. This supports my theory, because the more microfilament polymerization, the more viral particles are released. There's a correlation.
B - Phalloidin from the passage is told to block subunit loss from either end, aka kills microfilament polymerization. This defeats my hypothesis, because it's saying that exocytosis happens even without microfilaments.
C - Might be true, might be false, doesn't help my hypothesis though. Those genes aren't getting expressed until it infects a cell anyways.
D - Viruses have capsules compromised of myosin. Personally, I don't know if this is true or not offhand (I don't think it is), but again it doesn't really help my theory as much as choice A would.

B and C are super wrong. A is a far better linkage than D. A is the correct answer. Smells of VR, doesn't it? 😉