J.R. S.

My question is actually referred to hallucinogenic substances, in particular to mushrooms.I can understand why alcohol or other substances that relate to body mass (fat in some cases) affect people... more

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Chemistry

03/16/19

how many moles of hydrogen are in 327.4 grams of H2O

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Pharmacology Structural Biology Medicinal Chemistry

03/16/19

Do drugs' levo isomers have a better interaction with the receptors in our body than dextro isomers?

Examples of *levo* drugs include levothyroxine, levocitrizine, and levodopa. Is there any specific reason why the receptors in our body exhibit this stereoisomerism and hold a high preference for... more

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Chemistry

03/15/19

Why is chemistry important?

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Biochemistry Enzymes Biophysics

03/15/19

Is the EC50 of an activating protein for an enzyme a good indicator for the binding affinity Kd?

We work with a membrane protein system where measuring the affinity between the enzyme and the upstream activating protein has been difficult, and when measured in detergent solution, it is almost... more

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Algebra 1

03/15/19

If x+1=17, what is x?

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Pharmacology Neuroscience Toxicology

03/15/19

Relationship between toxicity of drugs and negative effects on brain?

Are psychoactive drugs with lower lethal doses more neurotoxic (more damaging to the brain)? For example, tetrahydrocannabinol (one of the active components of cannabis) has a much higher lethal... more

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Physiology Pharmacology Cell Biology

03/15/19

Enzyme Inhibition in relation to Aspirin?

I see that aspirin (in part) works by inhibiting cycloxygenase isoenzymes and that this inhibiting is irreversible. I've had a few classes mentioning this topic in passing, but never with depth.I... more

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Chemistry

03/15/19

What is covalent bonding?

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Biochemistry Physiology Human Biology

03/15/19

What is the mechanism behind "acquired" alcohol tolerance?

I can understand natural variation in alcohol dehydrogenase (ADH) in a population leading to variation in rate of inebriation (after controlling for other variables -- e.g., mass, food consumption,... more

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Pharmacology Neurophysiology

03/15/19

How do drugs enter synapses?

Many psychopharmaceutical drugs change synapse chemistry or directly agonize neuroreceptors in the brain. For example, cabergoline is a D2 agonist.How do these compounds enter the physical... more

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Organic Chemistry

03/15/19

What defines an organic compound?

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Chemistry

03/15/19

Why does water expand when it's frozen?

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Pharmacology Autonomic Nervous System

03/15/19

Why should we preceed neostigmine by atropine in tubocurarine toxicity?

Why should we precede neostigmine by atropine in tubocurarine toxicity ?I know that neostigmine act as anticholinesterase thus increasing the number of Ach molecules rendering them able to displace... more

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Organic Chemistry

03/15/19