Search found 9 matches

by Elinor
Mon Apr 26, 2010 1:48 am
Forum: Ecology
Topic: Determine number of species in a country
Replies: 1
Views: 3462

Determine number of species in a country

Hi Everyone I got this essay question that asked - How would one go about determining the number of species of plants and animals in their country? I know for small areas you can use quadrats and what not but I have no idea how to approach this question that is asking me to evaluate an entire countr...
by Elinor
Wed Mar 04, 2009 2:44 am
Forum: Human Biology
Topic: Blood Pressure in Males and Females
Replies: 1
Views: 13324

Blood Pressure in Males and Females

Hey everyone, I recently did a lab on heart rate and blood pressure in males and females. The heart rate in females was higher than in males because males generally have larger hearts that can pump more oxygen per beat and therefore can beat less than female hearts. I thought since heart rate was hi...
by Elinor
Thu Oct 16, 2008 3:45 am
Forum: Molecular Biology
Topic: Protein Precipitation
Replies: 3
Views: 7967

Protein Precipitation

Hi everyone, I recently did a lab on protein precipitation and we used various reagents to precipitate the proteins from a standard protein solution. When I added copper sulphate solution and lead acetate solution, I got a white precipitate for both. I know that heavy metal ions are supposed to prec...
by Elinor
Sat Oct 04, 2008 4:14 pm
Forum: Molecular Biology
Topic: Ion Exchange Chromatography
Replies: 2
Views: 3476

Re: Ion Exchange Chromatography

Ok...all that makes alot of sense...thank you!!
by Elinor
Fri Oct 03, 2008 3:03 am
Forum: Molecular Biology
Topic: Ion Exchange Chromatography
Replies: 2
Views: 3476

Ion Exchange Chromatography

Hi everyone, I have a question about ion exchange chromatography: When using the ion exchange column in this method, why is it necessary to ensure that the liquid does not drain below the surface of the resin in the column? I cant find the answer anywhere. Does it have anything to do with disturbing...
by Elinor
Sun Sep 07, 2008 12:12 am
Forum: Molecular Biology
Topic: Preparing a Buffer Solution
Replies: 1
Views: 9235

Preparing a Buffer Solution

Hi everyone, I have a question about preparing buffer solutions. I've found some sites with some information on it but i'm having trouble understanding it and relating the info to my particular question. I need to prepare 4 litres of o.4 mol mops (propane sulphonic acid) buffer of pH 7.8. (mops is j...
by Elinor
Tue May 06, 2008 10:46 pm
Forum: Molecular Biology
Topic: Benedict's Test
Replies: 2
Views: 6383

Re: Benedict's Test

Ok I got the answer ...thanks.
by Elinor
Wed Apr 30, 2008 7:00 pm
Forum: Molecular Biology
Topic: Benedict's Test
Replies: 2
Views: 6383

Benedict's Test

Hey everyone, I did a lab a while ago using the Benedict's Test on a number of different carbohydates. I found that the glucose gave the characteristic brick red colour but other sugars gave green, yellow and orange colours. The Benedict's test is for reducing sugars and all the sugars that I tested...
by Elinor
Wed Apr 09, 2008 11:31 pm
Forum: Genetics
Topic: Genotype-phenotype
Replies: 1
Views: 1553

Genotype-phenotype

Hi everyone there is a question that I havent been able to find an answer for so if anyone can help it will be greatly appreciated. Thanks What factors affect the genotype-phenotype relationship? I believe the relationship refers to how the phenotype is an outward expression of the genotype but I'm ...