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March 30, 2024, 02:11:24 am

Author Topic: VCE Biology Question Thread  (Read 3571881 times)  Share 

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MM1

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Re: VCE Biology Question Thread
« Reply #255 on: January 19, 2014, 06:47:23 pm »
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Can someone please distinguish between a primary host and an intermediate host? Cheers!

alondouek

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Re: VCE Biology Question Thread
« Reply #256 on: January 19, 2014, 07:07:11 pm »
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Can someone please distinguish between a primary host and an intermediate host? Cheers!

Primary host --> Host that the adult parasite lives in/on

Intermediate host --> Host that the larval parasite lives in/on
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vox nihili

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Re: VCE Biology Question Thread
« Reply #257 on: January 19, 2014, 07:23:07 pm »
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Can someone please distinguish between a primary host and an intermediate host? Cheers!

Primary host: site of sexual reproduction
Secondary host: site of asexual reproduction
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howlingwisdom

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Re: VCE Biology Question Thread
« Reply #258 on: January 20, 2014, 05:57:42 pm »
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How does a coenzyme affect the rate of a reaction?
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alondouek

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Re: VCE Biology Question Thread
« Reply #259 on: January 20, 2014, 06:01:05 pm »
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How does a coenzyme affect the rate of a reaction?

This may or may not be beyond the VCE course but, simply speaking, coenzymes facilitate electron transfer between the enzyme and the substrates.
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Jason12

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Re: VCE Biology Question Thread
« Reply #260 on: January 20, 2014, 06:20:39 pm »
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If an amino acid is involved in the formation of a sulfur bond, what can you conclude about the molecular formula of that amino acid?
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MagicGecko

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Re: VCE Biology Question Thread
« Reply #261 on: January 20, 2014, 06:23:59 pm »
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If an amino acid is involved in the formation of a sulfur bond, what can you conclude about the molecular formula of that amino acid?
In this case out of the 20 amino acids only two contain sulfur atoms: cysteine or methionine
However only cysteine is able to form sulfur bonds so the molecular formula for cysteine is your answer.
 
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alondouek

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Re: VCE Biology Question Thread
« Reply #262 on: January 20, 2014, 06:25:11 pm »
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If an amino acid is involved in the formation of a sulfur bond, what can you conclude about the molecular formula of that amino acid?

Well, amino acids are the monomer units of proteins, which are biomacromolecules. All biomacromolecules have carbon, hydrogen and oxygen. We also know that amino acids will always have nitrogen (due to the amino group (NH2) on one side of the amino acid). Because this statement says that a sulfur bond in apparent, we also know that the amino acid contains sulfur.

So, the likely molecular formula of that amino acid is, generally speaking, CHONS.
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howlingwisdom

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Re: VCE Biology Question Thread
« Reply #263 on: January 20, 2014, 06:26:24 pm »
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This may or may not be beyond the VCE course but, simply speaking, coenzymes facilitate electron transfer between the enzyme and the substrates.
Also, would a coenzyme have any effect on the amount of product produced?
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alondouek

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Re: VCE Biology Question Thread
« Reply #264 on: January 20, 2014, 06:27:43 pm »
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Also, would a coenzyme have any effect on the amount of product produced?

If an enzyme requires a coenzyme to interact with a specific substrate, then the presence of that coenzyme would definitely have an effect on the amount of product produced in a given time.
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alchemy

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Re: VCE Biology Question Thread
« Reply #265 on: January 20, 2014, 06:28:45 pm »
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If an amino acid is involved in the formation of a sulfur bond, what can you conclude about the molecular formula of that amino acid?

Well, amino acids are the monomer units of proteins, which are biomacromolecules. All biomacromolecules have carbon, hydrogen and oxygen. We also know that amino acids will always have nitrogen (due to the amino group (NH2) on one side of the amino acid). Because this statement says that a sulfur bond in apparent, we also know that the amino acid contains sulfur.

So, the likely molecular formula of that amino acid is, generally speaking, CHONS.

So Sulfur would be present in the Amino Acids R-variable group, right?

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Re: VCE Biology Question Thread
« Reply #266 on: January 20, 2014, 06:30:17 pm »
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So Sulfur would be present in the Amino Acids R-variable group, right?

Yes, as the variable group is what varies between the different amino acids :p

alondouek

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Re: VCE Biology Question Thread
« Reply #267 on: January 20, 2014, 06:34:09 pm »
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All the magic happens in the R-variable group! :)
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MM1

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Re: VCE Biology Question Thread
« Reply #268 on: January 20, 2014, 08:24:20 pm »
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What resources/stationery would you guys recommend for Biol haha?

vox nihili

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Re: VCE Biology Question Thread
« Reply #269 on: January 20, 2014, 08:35:09 pm »
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What resources/stationery would you guys recommend for Biol haha?

I just had a notebook where I wrote up all my notes and looseleaf to record whatever we did in class. It meant I was writing my own notes. Probably a pretty shit way to learn to be honest, but it worked I guess.
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