https://en.m.wikipedia.org/wiki/Glossary_of_biology#I

Vitamin-D
Cholecalciferol
Cholesterol
Steroid
Sterol

Steroidogenesis
Pregnenolone
Androstane
Enzyme
CYP11A1
DHEA Sulfate
DMSO

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(steroid nucleus) Gonane is a chemical compound molecule described as three molecules of cyclohexane and one of cyclopentane, fused in a particular way.

https://en.m.wikipedia.org/wiki/Gonane

https://en.m.wikipedia.org/wiki/Dehydroepiandrosterone

Dehydroepiandrosterone (DHEA), also known as androstenolone, is an endogenous steroid hormone precursor.

Phenanthrene

https://en.m.wikipedia.org/wiki/Phenanthrene

Chrysene

https://en.m.wikipedia.org/wiki/Chrysene

Anthracene

https://en.m.wikipedia.org/wiki/Anthracene

Polycyclic aromatic hydrocarbon

https://en.m.wikipedia.org/wiki/Polycyclic_aromatic_hydrocarbon

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Synthesizing sugars: Chemists develop method to simplify carbohydrate building

https://phys.org/news/2020-04-sugars-chemists-method-carbohydrate.html

Nucleic acid

https://en.m.wikipedia.org/wiki/Nucleic_acid

Adenine

https://en.m.wikipedia.org/wiki/Adenine

(G–C–A–T)
Guanine
Cytosine
Adenine
Thymine

DNA
ATP
NAD

Nucleic acid is composed of nucleotides, which are the monomers made of three components:

Pentose
(5-carbon sugar)

Phosphorus
(phosphate group)

Nitrogen
(nitrogenous base)

H20
(hydrogen & oxygen)

Carbon

https://en.m.wikipedia.org/wiki/Nucleoside

https://en.m.wikipedia.org/wiki/Glycosylamine

https://en.m.wikipedia.org/wiki/Glycosyl

using energy from the sun, a plant can transform carbon dioxide and water into glucose and oxygen.

Dioxide oxygen atoms per molecule.

Sun+ O2 + Carbon = Glucose

https://en.m.wikipedia.org/wiki/Carbonic_acid

hexachloride

..

https://en.m.wikipedia.org/wiki/Chalcogen

https://en.m.wikipedia.org/wiki/Chalcogen_bond

Chalcogen Bond
Halogen Bond

Chalcogen Bond is an attractive interaction in the family of σ-hole interactions, along with hydrogen bonds and halogen bonds.

σ* orbital of a C-X bond:

X=

Hydrogen
Halogen
Chalcogen
Pnictogen

Halogen Bond:

Iodine (I)
Bromine (Br)
Chlorine (Cl) <
Fluorine (F)

Chalcogens are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family.

Chalcogen Bond:

Oxygen (O)
Sulfur (S) <
Selenium (Se)
Tellurium (Te)
polonium (Po)

Pnictogen is any of the chemical elements in group 15 of the periodic table. This group is also known as the nitrogen family.

Pnictogen Bond:

Nitrogen (N)
Phosphorus (P)
Arsenic (As)
Antimony (Sb)
Bismuth (Bi)
Moscovium (Mc)

..

chelation Chalcogen Bond

Tetrel‐Bonding Interaction: Rediscovered Supramolecular Force?

..

https://en.m.wikipedia.org/wiki/Neutralization_(chemistry)

https://en.m.wikipedia.org/wiki/Sodium_acetate

Vitamin-C
Ascorbic Acid (Ascorbate)

https://en.m.wikipedia.org/wiki/Vitamin_C

Ascorbic acid is a weak sugar acid structurally related to glucose. In biological systems, ascorbic acid can be found only at low pH.

Chelation
chemical weathering is attributed to organic chelating agents (e.g., peptides and sugars) that extract metal ions from minerals and rocks.[13] Most metal complexes in the environment and in nature are bound in some form of chelate ring (e.g., with a humic acid or a protein). Thus, metal chelates are relevant to the mobilization of metals in the soil, the uptake and the accumulation of metals into plants and microorganisms.

https://en.m.wikipedia.org/wiki/Conjugate_acid

https://en.m.wikipedia.org/wiki/Protonation

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https://en.m.wikipedia.org/wiki/Sol–gel_process

https://en.m.wikipedia.org/wiki/Phosphor

https://en.m.wikipedia.org/wiki/Zinc_sulfide

https://en.m.wikipedia.org/wiki/Strontium_aluminate

https://en.m.wikipedia.org/wiki/Tetraethyl_orthosilicate

https://en.m.wikipedia.org/wiki/Stöber_process

https://en.m.wikipedia.org/wiki/Forbidden_mechanism

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https://en.m.wikipedia.org/wiki/Magic_acid

https://en.m.wikipedia.org/wiki/Fluoroantimonic_acid

..

Water splitting in photosynthesis

https://en.m.wikipedia.org/wiki/Water_splitting

https://en.m.wikipedia.org/wiki/Copper–chlorine_cycle