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I'm a parent and I think the teacher had been a bit harsh with marking most of these questions but can someone help me answer the very last question on the paper please (where someone has written SP against it). Is the answer mitochondria?

enter image description here

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closed as off-topic by Remi.b, rg255, AliceD, James, anongoodnurse Aug 13 '16 at 17:16

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Homework questions are off-topic on Biology unless you have shown your attempt at an answer. For more information see our homework policy." – rg255, AliceD, anongoodnurse
If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ As I already mentioned in the other post, questions like this are not generally useful for others because it is not really about a scientific query. The annotations/diagrams are not from a well known book/journal or other such published sources and therefore it is more about having an understanding with the teacher. Moreover, this would be considered a "homework" as per our site standards and such questions are expected to have some research effort from the asker. $\endgroup$ – WYSIWYG Jul 22 '16 at 11:01
  • $\begingroup$ what did the teacher say the answer was? $\endgroup$ – Vance L Albaugh Jul 22 '16 at 11:17
  • $\begingroup$ HI WYSIWYG I wasn't ignoring you - I didn't see your previous posts in time - I was too busy writing this one out :) But I won't post any more like this now - if anything I might post a question if I've tried many other avenues first together showing where I've checked. $\endgroup$ – MasterSQL Jul 22 '16 at 11:27
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    $\begingroup$ The question is off-topic here as it is not about science but about teaching. If you happen to have doubts on how to deal with how the grade affects your kid, you might want to ask a question on parenting.SE. $\endgroup$ – Remi.b Jul 22 '16 at 17:47
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    $\begingroup$ The community decides what is off topic, not you @masterSQL $\endgroup$ – rg255 Jul 23 '16 at 6:10
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So, to go through the question in total:

(a) Part A nucleus is correct, but Part B ist the cytosol/cytoplasm, as the line does not stop at the border, but goes through it and ends in the gray part of the cell.

(b) For part C, it is the same problem as in your first question. Yes, the picture may be a plant cell, however, upon this drawing one cannot differentiate a mitochondrium from a chloroplast. In my opinion, a good teacher should have marked this answer as correct, even if he/she wanted to hear the other possibility. Part D is correct.

(c) 'Photosynthesis takes place here': Photosynthesis takes place in the chloroplasts. Mitochondria would have been correct, if the teacher would have asked for the respiratory chain or for the often in school simplified powerhouses of the cell. 'Many of the cell's chemical reactions take place here': I think, the teacher wanted to hear the cytosol as answer.

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  • $\begingroup$ Hi SeRe I very appreciate your answer, thank you. I think if the very last question had said 'Jelly-like material surrounding the nucleus of a cell; chemical reactions take place here' then it would have given the pupils a better clue so yes the answer is cytoplasm. Thanks again. $\endgroup$ – MasterSQL Jul 22 '16 at 13:43

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