ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: Lols123 on June 02, 2011, 09:11:12 am

Title: DNA Sac?
Post by: Lols123 on June 02, 2011, 09:11:12 am

Hey guys

really worried about my DNA Sac tomorrow
if anyone has done it, would be great if they could share how/what to study for it besides the obvious stuff in the textbook.
Just any random stuff that my teacher may test me on :S

Title: Re: DNA Sac?
Post by: scocliffe09 on June 02, 2011, 10:57:48 am

Be able to draw a nucleotide from the parts (understand the differences between the bases and between Deoxyribose and ribose) given to you in the data book. Don't forget A-T are 2 & G-C are 3. (H bonds)
Understand the bonding within the double helix, and the meaning of antiparallel, 3' and 5'.
Be aware of the negatively charged phosphate groups and how we use this in electrophoresis. It wouldn't hurt to understand some more applications of DNA.

Title: Re: DNA Sac?
Post by: jane1234 on June 02, 2011, 04:26:54 pm

Know where the phosphate, sugar and base all join to each other to form a H20 molecule.
Know what a purine is (double ringed) and pyramidine (single ring).
Undertand how to intepret DNA profiles from gel electrophoresis.
Know the fundamental differences between RNA and DNA in their functions and structure.
Know that uracil is in RNA instead of thymine.

We just had ours, don't sweat it you should be fine :)

Title: Re: DNA Sac?
Post by: Lols123 on June 02, 2011, 04:39:53 pm

thanks for the help guys  :)
studying atm (or attempting to anyway xD)

@Jane you have to know the structure for RNA as well? its not in the textbook D:

Title: Re: DNA Sac?
Post by: cohen on June 02, 2011, 04:44:43 pm

From the study design:

Code: [Select]

Key knowledge for AoS2
This knowledge includes
• structure and systematic nomenclature of alkanes, alkenes, amines, chloroalkanes, alkanols and
carboxylic acids up to C10;
• common reactions of organic compounds: addition reactions of alkenes, substitution reactions of
alkanes and primary chloroalkanes, oxidation of primary alkanols, esterification;
• principles of fractional distillation;
• organic reaction pathways including the production of esters from alkenes, condensation and
polymerisation reactions that produce large biomolecules;
• primary, secondary and tertiary structure of proteins and the function of protein catalysts
(enzymes);
• biochemical fuels including fermentation of sugars to produce ethanol;
• the structure and bonding of DNA and its applications in forensic analysis;
• use of proteins as markers for disease;
• function of organic molecules in the design and synthesis of medicines including the production
of aspirin from salicylic acid.

So from my quick reading of the study design, it doesn't look like we need to know that much about RNA

Title: Re: DNA Sac?
Post by: pi on June 02, 2011, 05:53:27 pm

Quote from: cohen on June 02, 2011, 04:44:43 pm

So from my quick reading of the study design, it doesn't look like we need to know that much about RNA

+1, and uracil isn't on the data book, so RNA is a real minor issue in chem

Title: Re: DNA Sac?
Post by: jane1234 on June 02, 2011, 06:52:02 pm

We had a fair bit on our SAC, but they did give us some info about it and then made us answer RNA questions. Might be helpful to know just in case, but probably not necessary... :)

Title: Re: DNA Sac?
Post by: Lols123 on June 02, 2011, 08:33:01 pm

ah k, thanks!
just one more thing, our SAC will also cover Aspirin
so are there any major things you need to know other than the reaction pathways?
e.g. what relevance cold water has when creating aspirin in a lab? (if it has any)

Title: Re: DNA Sac?
Post by: pi on June 02, 2011, 08:51:46 pm

Whats funny is that MHS doesn't do a DNA SAC...


EDIT: thats fine Lols123 :) 

Title: Re: DNA Sac?
Post by: Zebra on June 02, 2011, 08:59:32 pm

Quote from: pi on June 02, 2011, 08:51:46 pm

Whats funny is that MHS doesn't do a DNA SAC...

LOL

@jane really? RNA?

Moderator action: removed real name, sorry for the inconvenience

Title: Re: DNA Sac?
Post by: cohen on June 02, 2011, 09:03:26 pm

here's whats on our dna/protein sac (which is tomorrow D:), so i guess this might help you for what to revise?

Code: [Select]

Proteins:

·         Amino acids

·         Peptide bonds

·         Primary, secondary and tertiary structures

·         Enzymes & denaturation

·         Proteins as indicators for disease

 

DNA:

·         Structure

·         Bonds between phosphate, deoxyribose and Base units (and b/w base units)

·         Electrophoresis

Medicine
- Synthesis of asprin


Title: Re: DNA Sac?
Post by: Lols123 on June 02, 2011, 09:19:58 pm

how would you guys describe the function of DNA?
WOuld it just be that it controls biological processes, ie the synthesis of proteins?

Edit: Thanks Pi, dont know why that was there :P

Moderator action: removed real name, sorry for the inconvenience

Title: Re: DNA Sac?
Post by: Keo on June 02, 2011, 11:13:00 pm

Quote from: Lols123 on June 02, 2011, 09:19:58 pm

how would you guys describe the function of DNA?
WOuld it just be that it controls biological processes, ie the synthesis of proteins?

Edit: Thanks Pi, dont know why that was there :P

I would say it is to instruct the cells to make a specific protein that determine biological traits.

Moderator action: removed real name, sorry for the inconvenience