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IB biology 2014 Freeze-etched micrograph

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Can anyone please help me out with the following question from Oxford IB course companion - 2014 edition

 

Identify three mitochondria in the freeze-etched electron micrograph given below

 

post-141975-0-26913600-1414573475_thumb.

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Hi Frazer, thank you for your reply. Would it be possible for you to upload the picture with the mitochondria marked (by arrows or circles)?Else I can email the picture to you as well.

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tumblr_inline_ne8m09n6mD1r338gi.png

 

I'm not 100% but i'm pretty sure those 2 folds are the mitochondira, but i am not sure about the top one, i've always hated electron micrographs D:

Edited by Frazer

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the arrow on the right hand side is not pointing to a mitochondria; I think it's Golgi Apparatus or something

I knew I got it confused! Basically ignore my diagram, the electron micrographs we study are a lot different and are a lot easier to identify so I was very confused when I saw this diagram. I'll refrain from replying next time if I am not 100% sure of my answer :)

Edited by Frazer
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Thanks Frazer, Susanne. Yes, I'm pretty sure the ones marked in red are Golgi apparatus stacks. SEM micrographs aren't my favourite either.

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Frazer, the topmost (and the biggest) blue question mark is the nucleus

Haha, yes I know, the blue question marks were meant to be surrounding the red circle where I thought the mitochondria was placed, :D

 

Usually you look for folds surrounded by a membrane but i cant see any  :dontgetit: , hope you can find your answer, try googling some SEM micrographs and compare :)

Edited by Frazer

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