Chemistry relating to carbon-containing compounds. Should relate to biology as opposed to being purely about chemistry.

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Glutamine analysis

I use to run a method to analyse all the amino-acids in a food sample. For that I have to hydrololyse the sample and in the last stage of the method I read the amino acids with a ion exchange ...
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1answer
49 views

How is the rate of transcription influenced by temperature?

How is the rate of transcription influenced by temperature? More precisely, I am looking for an article who quantitatively measured the rate of transcription of an "average gene" and show how this ...
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1answer
34 views

How long does it take for commercial fertilizers to break down? [closed]

Sometimes we buy carrots that are abit bitter, it's the taste of fertilzer. Once i put a tomato in the fridge, and when i ate it, it was bitter like shweppes, and i figured that was fertilizer also. ...
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1answer
42 views

What are the minimal chemical requirements for a food which we all can eat? [closed]

I've been puzzled by the following though experiment for the past few days: I want to make my own food from scratch, but I do not know where to start from. I want to be 100% sure that what I eat will ...
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2answers
96 views

How can you explain the origin of life out of nonliving matter (abiogenesis)? [closed]

According to biochemist Robert Shapiro, the "primordial soup" theory is as follows: Early Earth had a chemically reducing atmosphere. This atmosphere, exposed to energy in various forms, produced ...
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1answer
88 views

Solubility of Forskolin in ethanol

I am interested in using forskolin in cell culture medium. Does anyone know how to make solution of 10 microM forskolin in 5% ethanol or less. I would like to avoid using DMSO as a solvent. Thank you. ...
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1answer
131 views

What does the (-) in the molecule name mean?

I'm reading some text (purchase request) that has the following line in it. (-)-Norepinephrine What does the minus sign mean in front that is in parenthesis? Is this some kind of standard way of ...
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1answer
355 views

What is the effect of flash pasteurisation on Maillard reactions or production of AGEs in milk?

Does flash UHTP homogenision and pasteurisation change significantly the extent of maillard reaction in milk compared with traditional batch pasteurisation? If this is significant does this effect the ...
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1answer
110 views

What is the chemical composition of an egg shell?

It ought to be some combination of C, O, and H, I presume. But really why should I care if eggshell gets in my eggs while I'm cooking?
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127 views

Is Hydrogen gas present in biogas, and does it spontaneously ignite?

Is Hydrogen gas present in biogas? As it is highly inflammable, may it ignite the other gases like methane?
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1answer
31 views

cell uptake prediction

I'm generating random molecules I would like to know if they are able to pass through the cell membrane. Are there any ways (preferably computational) to predict cellular uptake of an organic molecule ...
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1answer
4k views

Melting point of a fatty acid?

What factors determine the melting point of a fatty acid? Chain length The number of methylene group The ionized state of the fatty acid Its degree of saponification Its ability to alter the ...
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1answer
346 views

Where are doxycycline's anti-inflammatory properties derived from?

I have been looking at this antibiotic called doxycycline which is used mainly as an antibiotic. It has however some interesting anti-inflammatory properties. Does anyone know where these ...
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1answer
201 views

What is the maximum potential sucrose concentration of plant sap? What keeps plants below this potential?

I am interested in identifying the maximum potential dissolved sucrose (%w/w) that plant sap could have, and which (biological, physical, chemical) factors constrain the observed sucrose ...
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1answer
277 views

What are the olfactory chemicals in whiteboard/permanent markers and what do they bind to in the nose, lungs, and brain?

What are the olfactory chemicals in whiteboard/permanent markers and what do they bind to in the nose, lungs, and brain?