Search found 11 matches

by mistique
Wed May 02, 2007 6:34 am
Forum: Physiology
Topic: Compounds of neurotransmitters
Replies: 3
Views: 4499

Compounds of neurotransmitters

Hey all,
I am stuck on a biology practice question and i was wondering if anyone knew the answer.
The question is:
"What compound do neurotransmitters contain?"

-Thanks alot.
:)
by mistique
Sat Mar 03, 2007 7:24 am
Forum: Cell Biology
Topic: Primary Structure
Replies: 1
Views: 1344

Primary Structure

Hey everyone out there, I am stuck on a question, that i really need help with. Does anyone know the answer to this question?: "A piece of RNA has the base sequence: U-A-C-G-A-U-U-C-G-A-A-C-A-U-G a) Are you able to determine the kind of RNA this molecule is without any further information? b) I...
by mistique
Sat Mar 03, 2007 7:08 am
Forum: Cell Biology
Topic: Carbohydrate polymer
Replies: 2
Views: 1702

Carbohydrate polymer

Hey everyone out there,
I am stuck on a question, that i really need help with. Does anyone know the answer to this question?:

"How many water molecules would be required to completely hydrolyse a carbohydrate polymer that contained a 100 monomers?"

Thanks a lot :)
by mistique
Sat Mar 03, 2007 6:49 am
Forum: Cell Biology
Topic: classification of a compound
Replies: 14
Views: 10592

classification of a compound

Hey everyone out there, I am stuck on a question, that i really need help with. Does anyone know the answer to this question?: "During an experiment, you analyse a compound that has a chemical composition of carbon, hydrogen and oxygen in the ratio of 1:2:1 and a six sided molecular shape. What...
by mistique
Mon Feb 26, 2007 11:46 am
Forum: Cell Biology
Topic: fats and energy
Replies: 8
Views: 8141

fats and energy

Hey everyone.
Does anyone know:
"What is the characteristic of fats that makes them energy dense?"

I would be so happy if u could help me with this as i don't know what the answer could possibly be...
thank-you :)
by mistique
Mon Feb 26, 2007 11:38 am
Forum: Cell Biology
Topic: Amino Acids
Replies: 2
Views: 2378

Amino Acids

Hey everyone out there. Does anyone know what the answer to this question could possibly be: "If an amino acid is involved in the formation of a sulfur bond, what can you conclude about the molecular formula of that amino acid?" I find this question very confusing. It would be very helpful...
by mistique
Mon Feb 26, 2007 11:36 am
Forum: Cell Biology
Topic: Amino Acids
Replies: 1
Views: 1175

Amino Acids

Hey everyone out there. Does anyone know what the answer to this question could possibly be: "Amino acids have the same basic structure yet they are all different. Explain which part of their structure confers this." It would be very helpful if someone could help me with this question as i...
by mistique
Mon Feb 26, 2007 11:34 am
Forum: Cell Biology
Topic: Differences between structures of molecules
Replies: 2
Views: 6425

Differences between structures of molecules

Hey everyone out there. Does anyone know what the answer to this question could possibly be: "What are the two differences between the general structures of fat and phospholipid molecules and the steroid molecules (cholesterol, testosterone and oestrogen in this case)." It would be very he...
by mistique
Mon Feb 26, 2007 11:32 am
Forum: Cell Biology
Topic: The structures of Lipid molecules
Replies: 2
Views: 4834

The structures of Lipid molecules

Hey everyone out there. Does anyone know what the answer to this question could possibly be: "Note the structures of the three steroid lipid molecules (in this case, cholesterol, testosterone and oestrogen). Compare their structure with the general structures of fat and phospholipid molecules....
by mistique
Mon Feb 26, 2007 11:26 am
Forum: Cell Biology
Topic: Synchrotron microscopes
Replies: 3
Views: 3723

Synchrotron microscopes

Hey everyone, I am stuck on a question that i have no idea about. It says: "You wish to carry out some research on molecular structure. What advantage might it be to use a synchrotron, compared the light and electron microscopes currently in use?" I have searched in my textbook and the int...
by mistique
Tue Feb 20, 2007 6:28 am
Forum: Physiology
Topic: Tadpoles
Replies: 3
Views: 6803

Tadpoles

Hello all, I just started doing Year 12 biology at school, but I'm already stuck with a question which I can't find answers for in the text book. - Explain why tadpoles living in a puddle of water may die well before the water has completely dried up. have searched everywhere but haven't found any s...