Recent content by Jack the Stri

There is a lot more in the brain than just nerve cells, if that's what you're getting at. Immune cells, vascular cells, extracellular matrix, ...

What do you mean by "double structured"? Whether or not cells have matured doesn't matter, if they have 1 copy of each chromosome that makes them haploid, per definition.

You're welcome ^^

Your method is correct, just fill in the correct figures and don't forget to divide by two (because for each mole of e.g. ethane you use 3.5 moles of oxygen, not 7!)

Remember that you're taking seven (or nine) molecules of oxygen for every two molecules of ethane (propene). Also, you're mixing up the percentages of ethane and propene.

The speed of a reaction, say A -> B, at any point in time is given by the difference between the speed of A reacting to B and the speed of B reacting to A (v = vforward - vreverse). These speeds are determined by the height of the activation energy, or 'the hill' in my previous post (see also...

Well, you don't 'need' a catalyst for any reaction, all a catalyst does is speed up the process, it has no influence on the final outcome. The reason why reactions occur is because they lead to lower enthalpy/higher entropy (or, less heat (inside the system, which you can feel as the system...

You are correct, the allergic reaction only occurs after the second sting and due to presence of IgE antibodies. IgA is not involved in this because it functions in mucosal immunity.

For starters, prokaryotes are single-celled organisms and thus by definition any transfer of a gene will result in that gene being present in all its progeny. For eukaryotes, this is much less straightforward. In addition, prokaryotes have certain mechanisms of gene transfer (independent of...

A denatured protein is devoid of its original structure and thus would be easier to digest (since it's more accessible to the enzyme). However, if denatured proteins clump together, this could produce the opposite effect. Most proteins do not clump together in an ordered way though, so any...

Maybe also useful to note that it enhances cancer progression.

It depends what framework in biology you're thinking of. Whereas ecologists etc. have a more than basic grasp of statistics because they work with large sample sizes, cell biologists usually rely on quantitative and somewhat subjective results (colorimetric assays), with t-tests being a very...

It's for the same reason asthma is localised to the airways and eczema is localised to the skin. I remember something about it being due to the responsive immune cells only being present in a certain tissue instead of going systemic, but I'm not sure.

Allergies result from an excessive response to an allergen (no secrets there). Basically what happens is that histamines and other molecules are released (by mast cells and basophiles I believe, it's been a while) that cause a difference in permeability of the blood vessels. Pressure then causes...

It equates to 0.00014g/0.1l, so 0.0014g/l or 1.4 mg/l, if I'm not mistaken.