Are these Biomolecules notes free?

Yes. The full 4-page Biomolecules sheet is free inside CapCompass, which runs in your browser with no account needed.

What does the Biomolecules revision sheet cover?

Biomolecules, the starting picture, Four classes, one building block each, Carbohydrates, Proteins, Lipids, Nucleic acids, Starch vs Cellulose, same sugar, different link, Starch, Cellulose, Proteins and amino acids, Levels of protein structure, Counting peptide bonds and water released.

Is this for Class 11 CBSE Biology?

It is written from the NCERT syllabus, so it serves CBSE and any board that follows NCERT for Biology.

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Biomolecules — Class 11 CBSE Biology revision notes

A 4-page visual revision sheet for Biomolecules, written for Class 11 CBSE Biology. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.

Biomolecules revision notes, page 1 of 4 — A preview of page 1 — all 4 pages open full size in the app.

Biomolecules in one look

the four macromolecules a living cell is actually built from

Biomolecules, the starting picture

any living tissue shows the same short list of elements
carbon, hydrogen, oxygen, nitrogen; smaller amounts of sulphur and phosphorus
these elements build small micromolecules first: amino acids, monosaccharides, fatty acids, nucleotides
micromolecules link up into the large macromolecules that do the work
the link-up reaction is almost always the same: dehydration (condensation), removing one water per bond
by weight, water is overwhelmingly a cell's largest single component
proteins are the largest fraction of the dry weight

Four classes, one building block each

Carbohydrates: built from monosaccharide sugar units, joined by a glycosidic bond
Proteins: built from amino acids, joined by a peptide bond
Lipids: mostly fatty acids and glycerol, joined by an ester bond
Nucleic acids: built from nucleotides, joined by a phosphodiester bond

Carbohydrates

classified by size: monosaccharides (glucose, fructose, ribose) can't be hydrolysed further
oligosaccharides carry two to ten sugar units; polysaccharides are chains of hundreds
a disaccharide like sucrose forms when two monosaccharides join, releasing one water at the glycosidic bond
polysaccharides serve two different jobs: starch and glycogen are storage forms, cellulose and chitin are structural

Page 1 of 4. The full sheet, all 4 pages, opens free in the app.

What this Biomolecules sheet covers

Biomolecules, the starting picture
Four classes, one building block each
Carbohydrates
Proteins
Lipids
Nucleic acids
Starch vs Cellulose, same sugar, different link
Starch
Cellulose
Proteins and amino acids
Levels of protein structure
Counting peptide bonds and water released
Enzymes, biological catalysts
Enzyme activity, how it responds
DNA vs RNA
DNA
RNA
Identifying an unknown biomolecule
Traps that cost marks
Tricks that save time

Open the full Biomolecules sheet →Free, works offline, no account needed. All 4 pages, plus a study plan built around your own exam dates.

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