Ultimate Gobblement
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Why does Rigor Mortis occur after death?
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15 votes

You are right that ATP is needed in relation to Rigor Mortis: This for ion pumps to maintain concentration gradients in cells. Without a constant supply of ATP to the pumps, calcium starts to diffuse ...

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What's the maximum and minimum temperature a human can survive?
11 votes

As Rory explained, internal body temperature needs to be highly regulated. Sweating is the main built in mechanism for removing excess heat from the human body. According to my biology book, in (100%)...

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Mitosis in human body
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7 votes

In many cases cell division depends on the stage of development an organism is in. The rate of cell division is obviously much faster in a developing organism and from what I understand fully ...

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Why do people look different after a long sleep?
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5 votes

Puffy eyes are caused by fluid build up in tear ducts from extended periods of lying down. Gravity from sitting or standing slowly drains them during the day. The crusty 'sleep' that accumulates in ...

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DNA methylation and genome size
4 votes

Is there any relationship between DNA methylation as a level of stability to epigenetic states and genome size? I would say yes, because methylation is used to disable genes in differentiated cells....

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Is there any reason for the variation in mitochondrial DNA size?
3 votes

Shorter DNA would allows easier synthesis, but more introns could allow for more different transcription factors to influence gene expression. Human mitochondria probably does not need to be as ...

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What effect does ambient temperature have on the cardiovascular system?
3 votes

In relation to the cardio vascular system a combination of adrenaline from exercise and the bodies natural response to the cold causes constriction of blood vessels in the skin and extremities. This ...

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Who is organizing the heartbeat and its roles in the body?
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2 votes

The Sinoatrial Node is a ganglion (clump of nerves) attached to the heart, which regulates heartbeat independently from the brain (http://en.wikipedia.org/wiki/Sinoatrial_node). Heart rate can also ...

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Why can't we feel pain when the eye lid touches the eye ball?
0 votes

This probably isn't advisable to try, but if you lick your finger first you can touch your eyeball directly without it hurting. It would appear to be that a lack of lubrication causes the painful ...

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Exactly which amino acids are phosphorylated in higher plants during state transitions?
0 votes

is the system flexible enough to compensate by phosphorylation at another site such as a serine residue If we are just talking about substituting a residue, I think that functionality would be ...

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