AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011

Before i forget: what did everyone put for why The lizards uptake of oxygen increased when it moved into hotter temps?

I put more enzyme activity/more atp needed/more o2 for respiration

also i noted there was a LOT of graphs to decipher in this exam

I started with DNA introduction: degenerate,non overlapping, universal.
Recombinant Dna technology( genetic engineering)
Gene therapy,
In vivo &in vitro (somewhere squished between these two topic)
DNA finger printing ands its use ( forensic science, investigate diversity in species, jeremy kyle)
Irrelevent but I wrote about ethical issues surrrounding Recombinant dna tech and all those.. and then times up! Hoping for the best

i talked about homeostasis?? :s

Before i forget: what did everyone put for why The lizards uptake of oxygen increased when it moved into hotter temps?

I put more enzyme activity/more atp needed/more o2 for respiration

also i noted there was a LOT of graphs to decipher in this exam

ahhyeahhh I said increase in kinetic energy and then said basically what you wrote.. also WHat did everyone write for that question ON PANTING?I ACTUALLY BEGAN TO PANT AND ASK MYSELF "HOW DOES THIS HELP" ? hahha! I just wrote about the release of hot air and evapouration of saliva O-o

But lizards are ectotherms? Their body temperature isn't controlled by homeostasis but behaviour mechanisms like moving in and out of the sun/shade, gaining heat from the ground or their colour variations.

I absolutely hated this exam! I was waiting for action potentionals and muscles and regulating heart rate to come up and I got all the stuff I'm worst at
Essay wan't too bad though!

i thought i did that wrong...

thanks

ahhyeahhh I said increase in kinetic energy and then said basically what you wrote.. also WHat did everyone write for that question ON PANTING?I ACTUALLY BEGAN TO PANT AND ASK MYSELF "HOW DOES THIS HELP" ? hahha! I just wrote about the release of hot air and evapouration of saliva O-o

For the DNA essay, would it have been okay to do a section on pcr and in vivo cloning, use in medicine e.g. Detecting genes using gene probes, stem cell therapy and gene therapy, then a section on plants like tissue cloning and gm crops and then genetic fingerprinting and paternity tests and crime scenes?

ahhyeahhh I said increase in kinetic energy and then said basically what you wrote.. also WHat did everyone write for that question ON PANTING?I ACTUALLY BEGAN TO PANT AND ASK MYSELF "HOW DOES THIS HELP" ? hahha! I just wrote about the release of hot air and evapouration of saliva O-o

I chose 5:2
You get plantlets and leaves. Evidence from the table showed that leaves could develop into full plantlets (from callus of course).

Which is better?
To get plantlets and then having to cut leaves or getting plantlets and some leaves so that new plantlets can form?