What does this Microbiology cheat sheet cover?

It has 10 sections: Cell Structure, Gram Stain, Growth Curve, Metabolism, Genetics, Viruses, Fungi & Parasites, Antimicrobials, Immunity and Sterilization. Together they cover the topics a typical Microbiology exam tests, including bacterial cell structure, Gram staining, microbial growth curve and metabolism.

Is the microbiology cheat sheet free?

The first part is free to read on this page, with no account needed. The full sheet opens in the app with Unlimited ($4.99 a month or $19 for a semester), where you can edit it, print it or save it as a PDF. It is one US Letter page and prints cleanly in black and white or colour.

Can I bring this Microbiology cheat sheet to my exam?

Only if your course allows a note sheet, so check the syllabus. This one is a single US Letter page. If your exam allows a different size, such as a 3x5 or 4x6 index card or one page front and back, Cheat Sheet AI makes one at exactly that size from your own lecture notes.

The sheet was written by our engine from a standard course outline, then a second model fact-checked every formula and statement against it; it corrected 4 statements before publishing. Notation and emphasis vary between courses, so check it against your own lecture notes.

Can I make a Microbiology sheet from my own notes?

Yes. Upload your lecture slides, notes or study guide and Cheat Sheet AI writes a sheet in your course's notation, sized to exactly the space your exam allows. Your first sheets are free.

HealthMicrobiology

Microbiology Cheat Sheet — 1-page PDF

Bacterial structure, growth, genetics, viruses, fungi/parasitology, antimicrobials, immunity, sterilization. The whole course on one dense, printable page for your midterm or final, with every formula typeset and worked examples where they help.

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For a specific exam: Microbiology Final exam study sheet.

1 pageUS Letter
10 sections10 topics
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Preview of the one-page Microbiology cheat sheet: Bacterial structure, growth, genetics, viruses, fungi/parasitology, antimicrobials, immunity, sterilization — the whole course, one page

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What’s on it

The topics a typical Microbiology exam tests, all on the one page.

Bacterial cell structure
Gram staining
Microbial growth curve
Metabolism
Bacterial genetics: transformation, transduction, conjugation
Viruses and replication cycles
Fungi and parasites
Antimicrobial mechanisms and resistance
Innate and adaptive immunity
Sterilization and disinfection

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The free part, as text

The free part of the sheet, section by section. Unlock the full sheet to read the rest, edit any block, and print it or save it as a PDF.

01Cell Structure

Prokaryote: Cell w/o nucleus or membrane-bound organelles; DNA in nucleoid; 70S ribosomes.

Major structures

Structure	Key feature	Function
Capsule/glycocalyx	External polysaccharide/polypeptide	Adhesion; antiphagocytic
Cell wall	Peptidoglycan	Shape; osmotic protection
Outer membrane	LPS, porins	Barrier in Gram- $-$
Plasma membrane	Phospholipid bilayer	Transport; energy generation
Flagella	Flagellin filament	Motility
Pili/fimbriae	Protein appendages	Attachment; conjugation
Endospore	Dormant tough form	Survival; not reproduction

Peptidoglycan

N-acetylglucosamine $(N A G) +$ N-acetylmuramic acid $(N A M) cross-links$ rigid mesh

Bacterial cell wall polymer; target of many antibiotics.

Endospore: Highly resistant dormant structure formed by some Gram- $+$ rods, esp. Bacillus and Clostridium.

Gram- $+$ : thick peptidoglycan; teichoic acids; no outer membrane.
Gram- $-$ : thin peptidoglycan; outer membrane with LPS; periplasm.
LPS lipid A = endotoxin.
70S ribosome = 50S + 30S subunits.

02Growth Curve

Turbidity: Indirect measure of cell density in liquid culture; correlates with growth but not viability.

Watch out:Plate count measures viable cells; turbidity counts live + dead particles.

03Metabolism

Aerobe: Uses $O X_{2}$ as terminal electron acceptor.
Anaerobe: Grows without $O X_{2}$ ; obligate anaerobes may be poisoned by oxygen radicals.

Energy categories

Mode	Carbon source	Energy source
Photoautotroph	$CO X_{2}$	Light
Chemoautotroph	$CO X_{2}$	Oxidation of inorganic compounds
Photoheterotroph	Organic C	Light
Chemoheterotroph	Organic C	Organic chemicals

ATP

ADP + Pi + energy ATP

Main energy currency; made by substrate-level phosphorylation, oxidative phosphorylation, or photophosphorylation.

Glycolysis: glucose → pyruvate; ATP + NADH.
TCA cycle: acetyl-CoA oxidized; NADH/FADH2 produced.
ETC: e $^{-}$ flow drives proton motive force; ATP synthase makes ATP.

04Viruses

Basic parts

Part	Role
Genome	DNA or RNA; ss or ds
Capsid	Protein coat; symmetry
Envelope	Host-derived lipid membrane; spikes for attachment
Spikes	Receptor binding; entry

Lytic cycle: Attachment → entry → biosynthesis → assembly → release; host cell lysed.
Lysogenic cycle: Viral genome integrates as prophage/provirus; replicated with host; may later induce lytic cycle.

Baltimore

$I :$ dsDNA $I I :$ ssDNA $I I I :$ dsRNA $I V : (+)$ ssRNA $V : (-)$ ssRNA $V I :$ ssRNA-RT $V I I :$ dsDNA-RT

Genomes grouped by route to mRNA.

Watch out:Enveloped viruses are generally more fragile to drying, detergents, and heat than nonenveloped viruses.

Ex.Phage integrates into host chromosome, no immediate lysis?

Lysogeny; prophage state.

05Fungi & Parasites

Fungi: Eukaryotic heterotrophs with chitin cell walls and ergosterol membranes; yeasts are unicellular, molds filamentous.

06Antimicrobials

Resistance mechanisms: drug inactivation, target modification, decreased permeability, efflux pumps, bypass pathway, biofilm.
Beta-lactamases hydrolyze beta-lactam ring.
MRSA: altered PBP (PBP2a); vancomycin resistance via altered D-Ala-D-Lac target.

Watch out:Misuse selects resistance; biofilms reduce penetration and increase persistence.

07Immunity

Innate immunity: Rapid, non-specific, no memory; barriers, phagocytes, complement, inflammation, NK cells.
Adaptive immunity: Antigen-specific, clonal expansion, memory; B cells and T cells.

Cells and roles

Cell	Role
Neutrophil	Early phagocyte; acute bacterial infection
Macrophage	Phagocytosis; cytokines; antigen presentation
Dendritic cell	Major antigen-presenting cell
B cell	Antibody production
CD4 $^{+}$ T	Helper; cytokines
CD8 $^{+}$ T	Cytotoxic killing

Antibody

IgM $\to$ first response $; $ I g G$ → $major serum Ab$ ;$ IgA $\to$ mucosa $; $ I g E$ →$ allergy/parasites

Major immunoglobulin classes.

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Also on the full Microbiology sheet

9 more sections, with every definition, formula and worked example. Unlimited unlocks every full sheet in the library to edit, print or save as a PDF, and makes unlimited sheets from your own notes.

Gram Stain

Gram stain
Outcome

Growth Curve

Binary fission
Batch culture phases
Generation time
Exponential growth
log growth rate

Metabolism

Fermentation

Genetics

Transformation
Transduction
Conjugation
Horizontal gene transfer
Plasmid
Operon

Viruses

Virus

Fungi & Parasites

Fungal forms
Parasite
Key targets

Antimicrobials

Bactericidal
Bacteriostatic
Common mechanisms
β-lactam
Selective toxicity

Immunity

Complement
Vaccination

Sterilization

Sterilization
Disinfection
Control levels
Methods
Pasteurization

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FAQ

Questions

About the Microbiology sheet and making your own.

What does this Microbiology cheat sheet cover?: It has 10 sections: Cell Structure, Gram Stain, Growth Curve, Metabolism, Genetics, Viruses, Fungi & Parasites, Antimicrobials, Immunity and Sterilization. Together they cover the topics a typical Microbiology exam tests, including bacterial cell structure, Gram staining, microbial growth curve and metabolism.
Is the microbiology cheat sheet free?: The first part is free to read on this page, with no account needed. The full sheet opens in the app with Unlimited ($4.99 a month or $19 for a semester), where you can edit it, print it or save it as a PDF. It is one US Letter page and prints cleanly in black and white or colour.
Can I bring this Microbiology cheat sheet to my exam?: Only if your course allows a note sheet, so check the syllabus. This one is a single US Letter page. If your exam allows a different size, such as a 3x5 or 4x6 index card or one page front and back, Cheat Sheet AI makes one at exactly that size from your own lecture notes.
How accurate is it?: The sheet was written by our engine from a standard course outline, then a second model fact-checked every formula and statement against it; it corrected 4 statements before publishing. Notation and emphasis vary between courses, so check it against your own lecture notes.
Can I make a Microbiology sheet from my own notes?: Yes. Upload your lecture slides, notes or study guide and Cheat Sheet AI writes a sheet in your course's notation, sized to exactly the space your exam allows. Your first sheets are free.

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