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March 28, 2024, 09:17:19 pm

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stonecold

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Re: Biology Students
« Reply #105 on: March 24, 2010, 07:04:14 pm »
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thanks TL.

i checked wiki but it was pretty general.

so basically it is the exact same amylase, which means the functional properties are the same.
if that is the case then whoever wrote this sac really screwed up!
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TrueLight

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Re: Biology Students
« Reply #106 on: March 24, 2010, 07:30:29 pm »
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yep same pretty much ... break down starch to simpler sugars

read through this
http://en.wikipedia.org/wiki/Alpha-Amylase

although seriously... u dont need to know all that.. and personally i think its a stupid question lol
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simpak

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Re: Biology Students
« Reply #107 on: March 24, 2010, 10:30:43 pm »
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Enzymes are a pretty cool topic.
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akira88

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Re: Biology Students
« Reply #108 on: March 24, 2010, 10:34:50 pm »
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Enzymes are a pretty cool topic.
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simpak

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Re: Biology Students
« Reply #109 on: March 26, 2010, 03:42:27 pm »
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Nah seriously they were probably my favourite; hf with energy.  Krebs cycle and electron transport chain are pretty great to get your head around.
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slothpomba

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Re: Biology Students
« Reply #110 on: March 26, 2010, 11:53:48 pm »
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Yeah, im a fan of the enzymes section too.

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TrueLight

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Re: Biology Students
« Reply #111 on: March 27, 2010, 12:56:27 am »
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so so so so many enzymes to remember and what they do......dam u micro and ur little dog too!

but yes enzymes fun... and expensive..lol

anyway...
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stonecold

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Re: Biology Students
« Reply #112 on: March 31, 2010, 07:16:04 pm »
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Okay, I'm confused!  Please help...

The electron transport chain in cellular respiration involves:

A. Cytochrome's on the inner mitochondrial membrane             or
B. Cytochrome protein on the outer mitochondrial membrane.

there were two other answers but they were redundant.
now the ETC takes place along the cytochrome's in the cristae
isn't that the outer membrane?

the answer sheet says A. is the correct answer, but yeah, unless the outer membrane is the mitochondrial matrix.  (which makes no sense as it is on the inside), then i don't see why I am wrong. also, i'm pretty sure cytochrome's are proteins.
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shinny

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Re: Biology Students
« Reply #113 on: March 31, 2010, 07:32:22 pm »
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Okay, I'm confused!  Please help...

The electron transport chain in cellular respiration involves:

A. Cytochrome's on the inner mitochondrial membrane             or
B. Cytochrome protein on the outer mitochondrial membrane.

there were two other answers but they were redundant.
now the ETC takes place along the cytochrome's in the cristae
isn't that the outer membrane?

the answer sheet says A. is the correct answer, but yeah, unless the outer membrane is the mitochondrial matrix.  (which makes no sense as it is on the inside), then i don't see why I am wrong. also, i'm pretty sure cytochrome's are proteins.

Mitochondria are structured so that they have an outer membrane, an inner membrane, an intermembrane space in between these two layers, and the matrix filling the inner membrane. The spaces created by the folds of the inner membrane are known as the cristae. This diagram will probably help visualising that. I'm not sure what level of detail you've learnt in VCE since I'm pretty sure you don't go very in-depth into the electron transport chain, but it seems like you already knew that the proteins are found on the cristae at least. Just keep in mind that the cristae are formed from the inner membrane then I guess; not outer.
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stonecold

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Re: Biology Students
« Reply #114 on: March 31, 2010, 08:04:34 pm »
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oh i think i get it.  thanks shinny.  basically the cytochrome's sit on the outside of the inner membrane(the intermembrane space)?
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lexitu

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Re: Biology Students
« Reply #115 on: March 31, 2010, 10:04:18 pm »
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Yeah correct answer is A - they are called crystae like you said and are the compartments formed by the inner membrane. The matrix is the fluid inside the mitochondrion. You could think about it similarly to photosynthesis - the grana being similar to the crystae and the matrix being similar to the stroma.

You are right about cytochromes as well, they are protein complexes.