Not the point
Trigllyceride already has 3 Fatty acids and 1 Glycerol sochudrolysing them just seperates them. No net gain. Only water is added when hydrolysis takes place

Reply 284

Hussain96

Would circular chromosome be accepted??

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Reply 285

Ordo

Original post by Biffalo_

Sure, link me? :smile:

http://www.thestudentroom.co.uk/showthread.php?t=4122319

(edited 7 years ago)

Reply 286

fugeefari

Was question about change in ph 2 marks?

Reply 287

BigDaddy97

Original post by fugeefari

Was question about change in ph 2 marks?

Just 1

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Reply 288

fugeefari

Original post by BigDaddy97

Just 1
Posted from TSR Mobile

The one with hydrolysis of triglyceride to fatty acids?

Reply 289

jadder1224

Hey guys for the ph meter, i put the ph meter will produce numerical data, so it is objective, wherea, the ph indicator is subjective ?
Will this be right ?

Reply 290

Ordo

Original post by fugeefari

The one with hydrolysis of triglyceride to fatty acids?

Yes, fatty acids are acidic so lower the pH

Reply 291

Ordo

Original post by jadder1224

Hey guys for the ph meter, i put the ph meter will produce numerical data, so it is objective, wherea, the ph indicator is subjective ?
Will this be right ?

Yes its correct. I put 'ph meter will give you more precise result' - would that still be right?

Reply 292

jadder1224

Original post by Ordo

Yes its correct. I put 'ph meter will give you more precise result' - would that still be right?

Sounds right to me, cos it gives you a precise number :smile:

Reply 293

Ordo

Original post by Hussain96

Would circular chromosome be accepted??

Posted from TSR Mobile

I think so. A circular bacterial chromosome is a bacterial chromosome in the form of a molecule of circular DNA. Any of these words - Circular chromosome/plasmid/loop of DNA/Circular DNA is correct.

Reply 294

jadder1224

I put it has no nucleus, the dna is free in the matrix

Reply 295

Jboyn247

Just a quick question:

For the questions On triglycerides and pH. I spoke about how the products of hydrolysis have a lower pH than the products which means that there is a higher concentration of H+ because I wasn't Certain if I should mention fatty acids or not. I know it's quite a bit of chemistry but would I at least get some marks since it is scientifically correct but doesn't use biological key terms.

Also, is it ok to say for the question on why mitochondria comes from bacteria that it has a double membrane?

Reply 296

jadder1224

Guys, honestly what would you say the grade boundaries will be? To be honest i found it more difficult than last year

Reply 297

Ordo

Original post by jadder1224

I put it has no nucleus, the dna is free in the matrix

It is right but I'm not sure tbh. You could get a mark.

Reply 298

username1133132

Horrible paper :frown:

Reply 299

username1133132

Original post by nk18444

on the last question i talked about how oxygen is a small, fat soluble, uncharged molecule that can pass through the fluidity if the phosphlipid bilayer
i put that the chloride ions are charged, water soluble and large therefore cannot diffuse through the membrane
i talked about facilitated diffusion with carrier proteins and diffusion with water filled protein channels
do you think this is okay for all 5 marks?
I didn't like the paper. I enjoyed doing past papers for biol1 and this caught me off guard.

Nk

i wrote that too snapsss