Unanswered Questions

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7 views

How do CO2 and carbonic acid (H2CO3) work in buffering the blood?

Been struggling with this for the past few days even after reading half of the acid base tutorial here: http://www.anaesthesiamcq.com/AcidBaseBook/ABindex.php, if someone could help me that'd be ...
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0answers
18 views

The skin color of bonobos

Why is that bonobos skin color on the areas not covered by hair are dark throughout life unlike the chimpanzee? Here is where I got this idea from "The portions of body not covered with hair (i.e. ...
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0answers
18 views

Advantage of opponent color?

Opponent process is a color theory that states that the human visual system interprets information about color by processing signals from cones and rods in an antagonistic manner. What is the ...
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0answers
7 views

Why should I diversify my diet?

This is a motto nowadays, but I don't understand why I should diversify my diet. I understand that the human body needs all kinds of nutrient (carbohydrates, fats, amino acids, vitamins, mineral...) ...
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0answers
4 views

Can you hold your breath longer when scubadiving deep under water?

If a person scuba dives to e.g. 50 m depth, the body will be exposed to a pressure approximately 6 times that of surface level. If the diver is breathing air from the tanks, this means that the lungs ...
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1answer
15 views

About the apoptosis mechanisms in a cell

The apoptosis mechanisms in a cell are like a type of 'self-destruction mechanism': is this correct? As with any type of complex system with various necessary functions, if it has a set of ...
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0answers
39 views

How is Calcium regulated in myocardic AP and plateau phase?

The plateau phase is maintained by influx of calcium and outflux of potassium in the second stage: My conjecture is that calcium transforms between two phases ionated phase (free calcium from i/c ...
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0answers
106 views

Using the IMGT/GENE-DB service to find RSS

I'm trying to get the data for the Human and Mouse 12 and 23 Recomination Signal Sequences (RSS), to run a classification algorithm on it. I'm not a biologist, so I apologise in advance for my ...
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0answers
124 views

How does Sodium Valproate cause neural plasticity

I have been reading a fascinating paper: Valproate reopens critical-period learning of absolute pitch 18 individuals were given Sodium Valproate (VPA) for a fortnight during which they trained on a ...
6
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0answers
74 views

effect of pupil responses on the electroretinogram

The electroretinogram is generally considered to reflect the retinal processing of a light stimulus, typically a photoreceptor response followed by secondary neuronal activity. However, I am wondering ...
6
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1answer
95 views

What are the effects of long-term liquid breathing?

I just saw a recent Physics question that mentioned liquid breathing (which I had never heard of before) and I started to wonder about its long-term effects. Let's imagine a person underwent liquid ...
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0answers
172 views

Additive genetic variance components from LMER in R

I've set up some dummy data in R which makes 40 genetically related lines, they are all siblings within a line so are genetically related by a factor of ½ thus additive genetic variance should be ...
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0answers
64 views

How many eukaryotes are there on Earth?

I have been reading: William B. Whitman, David C. Coleman, and William J. Wiebe, "Prokaryotes: The unseen majority", Proc. Natl. Acad. Sci. USA 95, pp. 6578–6583, June 1998. [Full Text] [PDF] ...
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0answers
41 views

How to define “Quasifixation” in continuous approximation of finite population?

Background Many models including the famous very first models derived by Sir Ronald Fisher in his early career, assume infinite population size. In an infinite population, an allele can rise in ...
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0answers
52 views

Hill's function for translational regulation

Transcriptional regulation is generally modeled as a Hill's function (similar to Michaelis-Menten Kinetics): $$\frac{dm_X}{dt}=\alpha _{m_X}.\frac{R}{K+R} -\beta _{m_X}.m_X$$ Where $m_X$ is the mRNA ...

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