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10 results for "secondary metabolite"

R_5_10 — Plant Defense: Chemical Warfare, Thorns, and Allelopathy

Plants, being sessile organisms unable to flee from herbivores, have evolved an extraordinary arsenal of defenses — mechanical, chemical, and ecological — that collectively represent one of evolution's most creative solu

plant defense secondary metabolite alkaloid terpene tannin phenolic

Y_1_21 Credible Altered States

Y_1_21 — Plant Medicine & Alkaloid Chemistry

Alkaloids — nitrogen-containing organic compounds produced by plants as secondary metabolites — constitute one of the most important classes of biologically active molecules in both medicine and human culture. Over 20,00

alkaloids ethnobotany plant medicine pharmacognosy morphine quinine

Z_1_21 Verified Molecular Biology

Z_1_21 — Riboswitches and RNA Thermometers

Riboswitches are structured RNA elements typically found in the 5' untranslated regions (5' UTRs) of bacterial messenger RNAs that directly sense and bind specific small-molecule metabolites — changing their three-dimens

riboswitch RNA thermometer aptamer gene regulation metabolite sensing mRNA structure

Q_2_03 Cosmology & Physics

Q_2_03 — Cosmic Rays and High-Energy Astrophysics

Cosmic rays — high-energy particles from space, mostly protons and atomic nuclei — were discovered by Victor Hess in 1912 via balloon flights that measured ionization increasing with altitude, earning him the Nobel Prize

cosmic rays muons Victor Hess Pierre Auger Observatory IceCube neutrino astronomy

ZB_3_04 Ecology & Biology

ZB_3_04 — Ecological Succession

Ecological succession — the process of community change over time following a disturbance or the creation of new habitat — is one of ecology's oldest and most studied concepts. Primary succession occurs on newly exposed

ecological succession primary succession secondary succession climax community pioneer species sere

T_2_10 Psychology & Social

T_2_10 — Psychology of Resilience and Post-Traumatic Growth

The dominant narrative — that trauma inevitably causes lasting psychological damage — is contradicted by extensive research. Resilience — the ability to maintain or quickly recover stable psychological functioning after

resilience post-traumatic growth adversity coping stress inoculation hardiness

L_5_13 Credible Genetics & Origins

L_5_13 — The Microbiome-Brain Axis: Gut Bacteria, Mood & Consciousness

The microbiome-gut-brain axis — bidirectional communication between the trillions of gut microorganisms and the central nervous system — has emerged as one of the most significant frontiers in neuroscience and consciousn

microbiome-brain-axis gut-brain-axis psychobiome vagus-nerve microbial-metabolites serotonin-gut

R_5_08 Verified Biology & Evolution

R_5_08 — Human Microbiome: Gut Ecology and Symbiotic Partnerships

The human microbiome — the vast community of trillions of microorganisms (bacteria, archaea, fungi, viruses) that inhabit the human body, primarily the gastrointestinal tract — is now recognized as a critical organ-like

microbiome gut bacteria symbiosis probiotics dysbiosis gut-brain axis

F_3_03 Lost Connections

F_3_03 — Domestication of the Horse and the Wheel: Technologies That Reshaped Civilization

The domestication of the horse and the invention of the wheel were among the most transformative technological developments in human history, fundamentally altering transportation, warfare, trade, and social organization

horse domestication wheel invention chariot Botai Sintashta spoked wheel

ZB_2_25 Verified Ecology & Biology

ZB_2_25 — Short-Chain Fatty Acids: Microbial Metabolites and Host Signaling

Short-chain fatty acids (SCFAs) — predominantly acetate (C2), propionate (C3), and butyrate (C4) — are the principal metabolites produced by anaerobic bacterial fermentation of dietary fiber in the mammalian colon, reach

short-chain fatty acids SCFA butyrate propionate acetate gut microbiome

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