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Author Topic: Edexcel BIOLOGY Doubts!!!!  (Read 133063 times)

Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #135 on: June 07, 2010, 06:30:07 pm »
Quote from: damlaj on June 07, 2010, 06:27:21 pm
hey kim what are your expectations for bio tommorow

haha well i am kind of expecting plant reproduction as human reproduction was their in jan 2010
and then cloning might come though not so sure
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #136 on: June 07, 2010, 06:37:17 pm »
can anyone describe the pathway of amino acids through a cell?
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Offline Darth Austrakast

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #137 on: June 07, 2010, 06:44:00 pm »
The amino acids are synthesized  to proteins in ribosomes in RER by translation
Next the amino acids are bounded in vesicle that bud off frm cisternae of RER that transport the protein across the RER network and cytoplasm and fuse wid the golgi body-where the proteins are modified to glycoprotein/lipoprotein etc.Then secretory vesicles are again released by the Golgi body which fuses with the cell membrane and releases the protein outside cell by exocytosis
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #138 on: June 07, 2010, 06:45:48 pm »
Quote from: Darth Austrakast on June 07, 2010, 06:44:00 pm
The amino acids are synthesized  to proteins in ribosomes in RER by translation
Next the amino acids are bounded in vesicle that bud off frm cisternae of RER that transport the protein across the RER network and cytoplasm and fuse wid the golgi body-where the proteins are modified to glycoprotein/lipoprotein etc.Then secretory vesicles are again released by the Golgi body which fuses with the cell membrane and releases the protein outside cell by exocytosis

thanks
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Offline Uchia

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #139 on: June 07, 2010, 06:51:25 pm »
could someone give a quick review on the vaculor, symplast and apoplast pathways my teacher told me there is a possibility that they will come
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #140 on: June 07, 2010, 07:02:59 pm »
Quote from: damlaj on June 07, 2010, 06:51:25 pm
could someone give a quick review on the vaculor, symplast and apoplast pathways my teacher told me there is a possibility that they will come

ok apoplast-through the cell wall
symplast-through cytoplasm
vacuolar-through vacuole
only apoplast is disturbed wen it reached the endodermis in the root due to the casparian strips
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Offline Uchia

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #141 on: June 07, 2010, 08:04:43 pm »
hey kim do u have the organised papers that T.Q provided if so tell me cz i have a question in them
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #142 on: June 07, 2010, 08:05:47 pm »
Quote from: damlaj on June 07, 2010, 08:04:43 pm
hey kim do u have the organised papers that T.Q provided if so tell me cz i have a question in them

nope i dont
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Offline Uchia

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #143 on: June 07, 2010, 08:09:47 pm »
part b
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #144 on: June 07, 2010, 08:13:38 pm »
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Offline Uchia

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #145 on: June 07, 2010, 08:17:20 pm »
i did the same thing but in the answers file they said its wrong u see this A diagram is difficuilt to figure out

answer is

BADCE
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #146 on: June 07, 2010, 08:20:46 pm »
Quote from: damlaj on June 07, 2010, 08:17:20 pm
i did the same thing but in the answers file they said its wrong u see this A diagram is difficuilt to figure out

answer is

BADCE

really??
ok wait lemme think this out
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #147 on: June 07, 2010, 08:29:34 pm »
ok well this is wat i cud come up wid

in A u can say the start of the formation of the spindle fibers and the homologous chromosomes line up togather so it has to come before D as in D the spindle fibers are longer

hope u understand
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Offline Uchia

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #148 on: June 07, 2010, 08:35:16 pm »
yeah thnxs i got it but still i have a small question if we have 5 diagrams and last diagram we said is E which is anaphase as the one before it metaphase

what could A, B, D stands for one should be for prophase and interphase what about the last one seems like this question kind of rubbish
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Offline Kim

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #149 on: June 07, 2010, 08:42:06 pm »
Quote from: damlaj on June 07, 2010, 08:35:16 pm
yeah thnxs i got it but still i have a small question if we have 5 diagrams and last diagram we said is E which is anaphase as the one before it metaphase

what could A, B, D stands for one should be for prophase and interphase what about the last one seems like this question kind of rubbish

haha yeh it is knda annoying

A=Prophase
B-interphase
C-anaphase
D-metaphase as well
E-telophase(because the centrioles have returned to their original positions)
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After all is said and done, more is said than done.

By the time a man realizes that maybe his father was right, he usually has a son who thinks he’s wrong.

The early bird may get the worm, but the second mouse gets the cheese.
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