Search found 728 matches

by biostudent84
Thu Nov 10, 2005 6:24 pm
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 23196

Perhaps, I'm not making myself clear. A donor blood grp O has agglutinins a and b, right? Now this can be transfused into a person wih blood group A which has agglutinogen A... don't agglutinin 'a' and agutinogen 'A' clump!!!! No. Type O has neither protein marker. Type AB blood has both A and B ma...
by biostudent84
Thu Nov 10, 2005 6:21 pm
Forum: Cell Biology
Topic: Effects of temperature on plant cells(beetroot)
Replies: 6
Views: 17245

The pigments will gain kinetic energy as temperature rises. The membrane will not be destroyed...however, the proteins in the membrane will denature if the temperature raises high enough.
by biostudent84
Thu Nov 10, 2005 6:17 pm
Forum: Human Biology
Topic: A question about iron oxidation in hemoglobin
Replies: 1
Views: 2553

We actually went over this in my own anatomy class today The lower the acidity (more basic) the blood is, the more oxygen it can hold. Hemoglobin changes structure as it gains more oxygen molecules. The more oxygen molecules hemoglobin has, the more readily it will accept another oxygen molecule...u...
by biostudent84
Thu Nov 10, 2005 6:01 pm
Forum: Human Biology
Topic: left brain or right brain
Replies: 2
Views: 3298

Re: left brain or right brain

1.Does our surrounding affect which brain we use? 2.Does our brain affects the carrier that we choose? 3.Which website about brain can give me some clues? 4.Does our brain affects to how much we snooze? If you are talking about motor functions, then you must understand that the right brain controll...
by biostudent84
Thu Nov 10, 2005 5:56 pm
Forum: Human Biology
Topic: Sequence of events in heart
Replies: 4
Views: 8134

1. The Right Atrium, receives "used blood" from the body. Blood will be pushed through the tricuspid valve to the 2. Right Ventricle, the chamber which will pump to the lungs through the pulmonic valve to the 3. Pulmonary Arteries, providing blood to both lungs. Blood is circulated through the lungs...
by biostudent84
Thu Nov 10, 2005 5:52 pm
Forum: Human Biology
Topic: Matching blood groups
Replies: 22
Views: 23196

Yes!! REALLY . My tutor told us that it doesn't effect matching. So if clumping happens as Mistery said, perhaps it happens to such a small extent that it doesn't really matter in the end!.. or is it that the donor's aggluntinins are removed by some process?????... I can't seem to get to the bottom...
by biostudent84
Wed Nov 09, 2005 11:27 pm
Forum: Molecular Biology
Topic: Isotopes and pH's
Replies: 9
Views: 6189

the google sites are probibited for our school b/c too many people look up inappropriate things allong with yahoo and just about any site ex. HTTP Error Status : 403 Forbidden Your school SHOULD be able to block keywords in the searches, and allow the students to have some use of search engines...a...
by biostudent84
Wed Nov 09, 2005 11:25 pm
Forum: Cell Biology
Topic: brief answer question~ plz help~
Replies: 4
Views: 3132

Fortunately the cell can create controlled gradients of Ca2+, Na+ and H+ to keep the water inside Not about the Ca2 and the H+ being controlled. But you are definelty right about the Na+. There is a protein in the cell membrane called the Sodium-Potassium Pump (Abbreviated "Na+/K+ pump"). It is con...
by biostudent84
Wed Nov 09, 2005 10:28 pm
Forum: Molecular Biology
Topic: Questions
Replies: 11
Views: 12030

Lactose, the disaccharide, does react, but it only releases a large amount of carbon dioxide gas. This is because yeast cells do not possess the ability (enzymys) to break the disaccharides down to the monoccharide: glucose. Thus, bloating and gas is often experienced by individuals that are unable ...
by biostudent84
Wed Nov 09, 2005 10:10 pm
Forum: Molecular Biology
Topic: Questions
Replies: 11
Views: 12030

A quick question before I write out the answers...I've done this lab before.

Have you done this lab yet in class? Or are you just writing your hypotheses?
by biostudent84
Wed Nov 09, 2005 10:07 pm
Forum: Zoology Discussion
Topic: Extinct
Replies: 9
Views: 7776

Actually, it was humans that hunted the dodo into extinction. Unsurprisingly, there was a species of tree that became extinct at the same time. The dodo would eat the Mauritian "calvaria"tree's seeds, then the seeds would travel through the bird's digestive system, coming out the other end in it's o...
by biostudent84
Wed Nov 09, 2005 10:00 pm
Forum: Molecular Biology
Topic: Questions
Replies: 11
Views: 12030

Re: Questions

mikki wrote:Questions on this experiment on the following post. I want post this before something happens and I accidentally delete it or something.


A good plan ;)