Search found 35 matches

by rob3
Sat Dec 09, 2006 5:26 pm
Forum: Genetics
Topic: i want answer!
Replies: 4
Views: 2412

The study of this activation and inactivation of genes is known as epigenetics. You can find out a bit about it on this page:

http://en.wikipedia.org/wiki/Epigenetics
by rob3
Wed Nov 29, 2006 6:39 pm
Forum: Molecular Biology
Topic: enzymes in viruses
Replies: 10
Views: 4675

Yes, but werent we trying to find an enzyme present in viruses that COULD remove introns?
by rob3
Wed Nov 29, 2006 12:23 pm
Forum: Molecular Biology
Topic: enzymes in viruses
Replies: 10
Views: 4675

Are you talking abou reverse transcriptase? Because I dont think that removes introns.
by rob3
Tue Nov 28, 2006 7:09 pm
Forum: Zoology Discussion
Topic: Testing for life
Replies: 13
Views: 6911

True, what about viruses, they are on the borderline. A lot of people regard them as life that can be killed, but some say it isnt life. A definition of life still has to be known if you want to know if you have just ceased the function of a very complex mineral (what some people regard viruses as b...
by rob3
Tue Nov 28, 2006 6:48 pm
Forum: Zoology Discussion
Topic: Testing for life
Replies: 13
Views: 6911

If we do not have a defenition for life there can be no test for life, as this in itself could be a definition.
by rob3
Tue Nov 28, 2006 3:39 pm
Forum: Cell Biology
Topic: Please help with my homework?
Replies: 16
Views: 10569

nucleus-brain plasma membrane-skin cell wall-armour? mitochondria -generator ER- blood vessels microtubles- skeleton lysosome-stomach cytosol vacuole-liver chlorophlast -solar panel centrioles Your teacher sets strange homeworks, wouldnt it be easier and more useful for him just to get you to write ...
by rob3
Tue Nov 28, 2006 1:18 pm
Forum: Molecular Biology
Topic: enzymes in viruses
Replies: 10
Views: 4675

I agree; the intons are still present in the elephants DNA, since the bacteria is a prokaryote, it has no mechanism for removing the introns from the pre-mRNA. Im not sure of the enzyme that would be used to remove them, maybe it is some sort of restriction enzyme? A way that the whole problem could...
by rob3
Mon Nov 27, 2006 7:36 pm
Forum: General Discussion
Topic: Alevel biology
Replies: 2
Views: 2921

Try the website of your exam board. I am also taking A2 biology, but I dont know much about biomedical science courses. If your school/college has a careers department, you could try looking ther for info.
by rob3
Mon Nov 27, 2006 7:25 pm
Forum: Genetics
Topic: DNA analysis
Replies: 21
Views: 26302

The white blood cells, red blood cells contain no DNA so cannot be used for sequencing; white blood cells do and can.
by rob3
Mon Nov 27, 2006 12:00 pm
Forum: General Discussion
Topic: can you help me?
Replies: 4
Views: 2137

Its amazing how many people dont know how to use google
by rob3
Mon Nov 27, 2006 11:58 am
Forum: Genetics
Topic: two questions in biology... please help
Replies: 7
Views: 6417

You are unlikely to get much help from a biology forum full of people who enjoy biology, if your screen name is: hate-BIO
by rob3
Mon Nov 27, 2006 9:43 am
Forum: Cell Biology
Topic: Please help with my homework?
Replies: 16
Views: 10569

1. complex 2. digests Cellular shapes - no idea The composition of protoplasm is continuously changing, therefore, thousands of different (molecules?- not 10 letters but i am sure it is not organelles, as they are not brought into the cell) are brought into or made by the cell. 10-letter word. Each ...