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Precursors

precursor

Something that precedes.

1. (Science: biochemistry) In biological processes, a substance from which another, usually more active or mature substance is formed.

2. In clinical medicine, a sign or symptom that heralds another.

Origin: L. Praecursor = a forerunner


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Facial hair

... put under skin..in some genetic disorders like congenital adrenal hyperplasia there's high production of testosterone from adrenal glands..some precursors of T are DHEA(athletes use it,and older people as suplementation).. And I wont write a novel here lol.. But I guess that beard and hair are ...

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by zami'87.
Sun Aug 23, 2009 3:36 am
 
Forum: Human Biology
Topic: Facial hair
Replies: 38
Views: 130649

Chloroplast, Mitochondria, Nucleus

... would only talk about human life, then I guess in theory you could artificially synthetize amino acids, proteins, sugars and lipids from inorganic precursors (or existing organic matter), so human life could that way survive even without chloroplasts. Of course not the 6 billion or so of us, but ...

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by biohazard
Tue Mar 03, 2009 2:51 pm
 
Forum: Cell Biology
Topic: Chloroplast, Mitochondria, Nucleus
Replies: 15
Views: 1804

Does anything prey on viruses?

... viruses are in the environment, I'd be surprised if no micro-organism would try to take advantage of them as a source of proteins and nucleic acid precursors... Some cells of the immune system (e.g. dendritic cells) also "eat" viruses among many other types of macromolecules. They do ...

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by biohazard
Mon Feb 23, 2009 7:09 am
 
Forum: Ecology
Topic: Does anything prey on viruses?
Replies: 3
Views: 971

Inhibition of RNA/DNA/protein synthesis

... by antibiotics with an non radioactive method. normally we use tritium-labelled leucine, thymidine, uridine. I know that these radioactive precursors are very sensitive, but is there a non radioactive method? Can someone help me in this case? THX

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by RuNkLi
Thu Nov 13, 2008 9:07 am
 
Forum: Microbiology
Topic: Inhibition of RNA/DNA/protein synthesis
Replies: 1
Views: 743

Investigation of neurons

... of further regulatory genes. The specific regulatory genes expressed by different motor neurons is determined by the signals that the neural precursors receive according to their position within the spinal cord as well as the signals they receive as their processes grow out of the spinal ...

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by inayat
Wed Sep 10, 2008 7:53 pm
 
Forum: Molecular Biology
Topic: Investigation of neurons
Replies: 0
Views: 470
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