Edexcel 6BIO2 ~ 3rd June 2013 ~ AS Biology

Original post by Nowshin Khan

Can I get a free download link or read online SNAB revision guide?
PLZ sumbody help me.. :frown:

SNAB student book or revision guide?

Reply 1223

Branny101

Original post by billyfisher100

In transpiration (which is not even on the spec) water vapour diffuses out through stomata, because water evaporates in sponges mesophyll and guard cells. This causes water to be replaced through capillary action in xylem, then osmosis to the leaf cells. Water is drawn up through xylem through cohesion tension (which is also not on the spec).

Transpiration isn't in the spec?! What about pathways through the root to the Xylem?

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Reply 1224

Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?

Reply 1225

Whostolemycookie

Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?

Reply 1226

Nowshin Khan

Original post by billyfisher100

SNAB student book or revision guide?

SNAB revision guide

Reply 1227

Original post by Whostolemycookie

Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?

Urrrr... Totipotent gives rise to all the cells but plruipotenet does give rise to all the cell types except extra-emryonic stem cells therefore it's limited to produce only specific cells like for treating type 1 diabtetes.

?? :curious:

hELP

(edited 10 years ago)

Reply 1228

Branny101

Original post by Whostolemycookie

Question: What is a benefit of using pluripotent stem cells rather then totipotent for the treatment of type 1 diabetes?

Can be taken from left over IVF embryos instead of having to produce new ones? Fused cells maybe? Dunno :dontknow:

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(edited 10 years ago)

Reply 1229

Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?

HELP

Reply 1230

Original post by Branny101

Transpiration isn't in the spec?! What about pathways through the root to the Xylem?

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http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20Issue%204%20250510.pdf

Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!

Reply 1231

Original post by billyfisher100

http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20Issue%204%20250510.pdf

Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!

TRUE most of then are garbage.. or for extension. :redface:

Reply 1232

Original post by Jacksgap

Guys does anyone know what core practicals may come up this time? ANTIMICROBIAL and PLANT deficiencies came up in Jan anyways.. suggestions?

HELP

Root tip squash almost for sure
Totipotency
Actually describing ntimicrobial properties of plants.
tensile strength

There was so much practical and HSW emphasis in January that maybe a practical wont even come up

Reply 1233

Original post by Jacksgap

TRUE most of then are garbage.. or for extension. :redface:

Or if edexcel decide to give us a nice little off-spec surprise as they often do...

Reply 1234

Branny101

Original post by billyfisher100

http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20Issue%204%20250510.pdf

Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!

Its true, but are the pathways there? :frown:

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Reply 1235

Nowshin Khan

Original post by billyfisher100

http://www.edexcel.com/migrationdocuments/GCE%20New%20GCE/UA024831%20GCE%20in%20Biology%20Issue%204%20250510.pdf

Read the spec and you'll find out that half the stuff in that bloody snab student book isn't even in the spec!!

SNAB revision GUIDE plz???

Reply 1236

wbrian

is genetic screening in unit 2 (pls reply soon )

Reply 1237

Original post by wbrian

is genetic screening in unit 2 (pls reply soon )

Nope

Reply 1238

wbrian

Original post by billyfisher100

Nope

thankss

Reply 1239