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July 02, 2025, 07:57:35 am
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Author Topic: Rishi's Biology Thread  (Read 24680 times)  Share 

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Rishi97

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Re: Rishi's Biology Thread
« Reply #15 on: March 31, 2014, 05:55:18 pm »
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oh ok thanks :)
So would I still be correct if I just wrote NADPH for the output of the light dependent stage?
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grannysmith

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Re: Rishi's Biology Thread
« Reply #16 on: March 31, 2014, 06:10:15 pm »
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Quote from: Rishi97 on March 31, 2014, 05:55:18 pm
oh ok thanks :)
So would I still be correct if I just wrote NADPH for the output of the light dependent stage?
I think so, because many textbooks just leave it at that
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Rishi97

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Re: Rishi's Biology Thread
« Reply #17 on: April 06, 2014, 08:30:15 pm »
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What is the role of NADP+ reductase in light dependent reactions?
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vox nihili

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Re: Rishi's Biology Thread
« Reply #18 on: April 06, 2014, 08:37:10 pm »
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Quote from: Rishi97 on April 06, 2014, 08:30:15 pm
What is the role of NADP+ reductase in light dependent reactions?

It reduces NADP+
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Rishi97

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Re: Rishi's Biology Thread
« Reply #19 on: April 06, 2014, 08:46:36 pm »
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Quote from: Mr. T-Rav on April 06, 2014, 08:37:10 pm
It reduces NADP+
It reduces NADP+ to make NADPH???
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alchemy

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Re: Rishi's Biology Thread
« Reply #20 on: April 06, 2014, 09:14:31 pm »
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Quote from: Rishi97 on April 06, 2014, 08:46:36 pm
It reduces NADP+ to make NADPH???

Yup :)
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Rishi97

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Re: Rishi's Biology Thread
« Reply #21 on: April 07, 2014, 01:50:27 pm »
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At school when we learnt about cellular respiration, our teacher explained that there are 4 stages:
- Glycolysis
- Link reaction
- Krebs cycle
- Electron transport chain
But in the textbook, they havent mentioned the link reaction at all. Why is that?
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alchemy

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Re: Rishi's Biology Thread
« Reply #22 on: April 07, 2014, 02:56:45 pm »
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Quote from: Rishi97 on April 07, 2014, 01:50:27 pm
At school when we learnt about cellular respiration, our teacher explained that there are 4 stages:
- Glycolysis
- Link reaction
- Krebs cycle
- Electron transport chain
But in the textbook, they havent mentioned the link reaction at all. Why is that?

Hmm, what textbook are you using btw? NoB (3rd edition) has it on page 83 Figure 3.30.
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Rishi97

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Re: Rishi's Biology Thread
« Reply #23 on: April 07, 2014, 03:00:04 pm »
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Quote from: alchemy on April 07, 2014, 02:56:45 pm
Hmm, what textbook are you using btw? NoB (3rd edition) has it on page 83 Figure 3.30.

I'm using NoB (4th edition) and the link reaction isn't even mentioned
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alchemy

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Re: Rishi's Biology Thread
« Reply #24 on: April 07, 2014, 05:14:48 pm »
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Quote from: Rishi97 on April 07, 2014, 03:00:04 pm
I'm using NoB (4th edition) and the link reaction isn't even mentioned

Ah, the newer books usually have some stuff cut out, so that's probably why..
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Rishi97

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Re: Rishi's Biology Thread
« Reply #25 on: April 07, 2014, 06:51:47 pm »
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Describe two mechanisms that operate to restore homeostasis after infection by a pathogenThe questions from biozone are soo hard :(
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swagsxcboi

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Re: Rishi's Biology Thread
« Reply #26 on: April 07, 2014, 07:17:06 pm »
+1
Quote from: Rishi97 on April 07, 2014, 06:51:47 pm
Describe two mechanisms that operate to restore homeostasis after infection by a pathogenThe questions from biozone are soo hard :(
biozone doesn't specifically cover VCE course

"In Unit 3, coordination and regulation are considered at the cellular, rather than whole organism, level. Hence, references to homeostasis and feedback mechanisms have been deleted from Unit 3. The treatment of homeostasis at a systems level, including feedback mechanisms, involving hormonal control (for example, regulation of blood glucose), water balance and temperature control, is included in Unit 2 Biology."
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Rishi97

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Re: Rishi's Biology Thread
« Reply #27 on: April 20, 2014, 01:12:18 pm »
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Why do hormones require a second messenger protein in order to have their signal detected within a cell?
Is it because they are soluble in water?
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nhmn0301

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Re: Rishi's Biology Thread
« Reply #28 on: April 20, 2014, 01:36:30 pm »
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Quote from: Rishi97 on April 20, 2014, 01:12:18 pm
Why do hormones require a second messenger protein in order to have their signal detected within a cell?
Is it because they are soluble in water?
Remember that for hormones to work in the body, we only require a very very very very very very small concentration of hormones, hence, by using second messenger, only that little amount can amplified itself in the signal transduction process and produce great effect, much more efficient.
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vox nihili

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Re: Rishi's Biology Thread
« Reply #29 on: April 20, 2014, 01:47:58 pm »
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Quote from: Rishi97 on April 20, 2014, 01:12:18 pm
Why do hormones require a second messenger protein in order to have their signal detected within a cell?
Is it because they are soluble in water?

This is actually technically not always the case. Some hormones don't have any second messenger.
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