Search found 10 matches

by marineman
Tue Apr 16, 2013 12:49 pm
Forum: General Discussion
Topic: Practical Examination (AS)
Replies: 4
Views: 11861

Is your exam board OCR? if so get the OCR biology revision guild (everything you need to know about the as level exams are in there in a reduced format so it makes revising very easy! plus it has a summary of the factors effecting enzymatic activity in 2 pages) if not just read the pages in the book...
by marineman
Sun Apr 14, 2013 6:06 pm
Forum: General Discussion
Topic: Practical Examination (AS)
Replies: 4
Views: 11861

You really shouldn't worry about that. All they did for me is watched us to see if we did any stupid things in the lab (so don't set fire to people and you'll be fine, everyone i know got 100% pretty much for turning up). Just wear lab coats, safety glasses and be safe when handling harmful substanc...
by marineman
Sat Mar 02, 2013 10:47 am
Forum: Zoology Discussion
Topic: Need details for this type of crab
Replies: 5
Views: 5465

Re: Need details for this type of crab

Portunidae crab is its family (you can tell by the flattened back simming legs) probably the blue crab also known as Callinectes sapidus. You can easily search this name and find the family history, taxonomy etc
by marineman
Sat Mar 02, 2013 10:27 am
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 7453

There is too much variation in the parasite loading of gastropods.
by marineman
Mon Feb 25, 2013 6:54 pm
Forum: Zoology Discussion
Topic: Brown bears and polar bears, can they mate?
Replies: 2
Views: 3549

id assume it was possible as there has been evidence of grizzly bears mating with polar bears creating a hybrid. Here are some showing this hybridization.
http://www.newscientist.com/article/mg2 ... rming.html
http://www.nbcnews.com/id/12738644/?GT1 ... SuyOleetvE
Hope this helps.
by marineman
Sun Feb 24, 2013 1:36 pm
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 7453

Re: How can i asses the parasie loading of littorina littoria?

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could then see the released cercariae when the vial was held up to a ligh...
by marineman
Sun Feb 24, 2013 1:28 pm
Forum: Botany Discussion
Topic: the harm of algae
Replies: 2
Views: 7003

This is a very broad question, do you mean the harmful effects of harmful algae blooms, specific algae species e.g. pseudo-nitzschia produces a secondary metabolite called domoic acid which is a neurotoxin and bio accumulates in marine life causing respiratory problems and can lead to amnesiac shell...
by marineman
Sun Feb 24, 2013 12:59 pm
Forum: Botany Discussion
Topic: Rhodophycae, Secoundary metabolites effects on parasite load
Replies: 0
Views: 3385

Rhodophycae, Secoundary metabolites effects on parasite load

I was thinking of doing my honors project on the effects of Rodophycae on parasites. But i am unsure which species of red algae to choose. Does anyone know which species (located in the uk- preferably in south west of England) which would produce secondary metabolites which would effect the parasite...
by marineman
Fri Feb 22, 2013 6:38 pm
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 7453

I was hoping to assess the effect of secondary metabolites of several species of Rhodophycae to see if it produces an anti-parasitic response so i kinda need them to be as undamaged as possible. The trematodes would be located in the foot and digestive glands. Infection by the parasites would be in ...
by marineman
Fri Feb 22, 2013 1:09 pm
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 7453

How can i asses the parasie loading of littorina littoria?

I’m thinking of studying whether there is a parasite induced behavior in littorina littoria for my honors project but I’m not sure how to assess the parasite loading of them. Does anyone have any ideas about this? And if possible, if there is a way to assess the parasite load without damaging (too m...