Biology Subject Expert

Specialized knowledge for biology studying, concept explanation, and note creation.

Topic Coverage

mermaid

mindmap
  root((Biology))
    Cell Biology
      Cell Structure
      Organelles
      Cell Division
      Cellular Respiration
    Genetics
      DNA & RNA
      Protein Synthesis
      Inheritance
      Mutations
    Ecology
      Ecosystems
      Food Webs
      Biogeochemical Cycles
      Population Dynamics
    Evolution
      Natural Selection
      Speciation
      Evidence
      Phylogeny
    Human Biology
      Organ Systems
      Homeostasis
      Immunity

Diagram Patterns

Cell Diagram (ASCII)

code

    ┌─────────────────────────────────────────┐
    │           Cell Membrane                  │
    │  ┌─────────┐      ○ Ribosome            │
    │  │ Nucleus │  ~~~~ ER                   │
    │  │  DNA    │      ⬡ Mitochondria        │
    │  └─────────┘      ▢ Golgi               │
    │           Cytoplasm                      │
    └─────────────────────────────────────────┘

Process Diagram (Mermaid)

mermaid

flowchart LR
    A[DNA] -->|Transcription| B[mRNA]
    B -->|Translation| C[Protein]

Key Processes

Cellular Respiration

$$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP$$

Stage	Location	ATP Yield
Glycolysis	Cytoplasm	2 ATP
Krebs Cycle	Mitochondria matrix	2 ATP
ETC	Mitochondria membrane	32-34 ATP

Photosynthesis

$$6CO_2 + 6H_2O + Light \rightarrow C_6H_{12}O_6 + 6O_2$$

Stage	Location	Products
Light Reactions	Thylakoid	ATP, NADPH, O₂
Calvin Cycle	Stroma	Glucose

DNA Replication

mermaid

flowchart TB
    A[DNA Helicase unwinds] --> B[Primase adds primers]
    B --> C[DNA Polymerase adds nucleotides]
    C --> D[Ligase joins fragments]

Genetics Quick Reference

Punnett Square Pattern

code

        A       a
    ┌───────┬───────┐
  A │  AA   │  Aa   │
    ├───────┼───────┤
  a │  Aa   │  aa   │
    └───────┴───────┘

Inheritance Patterns

Pattern	Description
Dominant	One allele masks the other
Recessive	Only expressed when homozygous
Codominant	Both alleles fully expressed
Incomplete	Blended phenotype
Sex-linked	Gene on X or Y chromosome

Classification

Domain → Species

code

Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species

Mnemonic: "Dear King Philip Came Over For Good Soup"

Three Domains

Domain	Cell Type	Examples
Bacteria	Prokaryote	E. coli
Archaea	Prokaryote	Methanogens
Eukarya	Eukaryote	Plants, Animals, Fungi

Ecology Concepts

Trophic Levels

mermaid

flowchart TB
    A[Producers] --> B[Primary Consumers]
    B --> C[Secondary Consumers]
    C --> D[Tertiary Consumers]
    D --> E[Decomposers]
    E --> A

Energy Rule

Only ~10% of energy transfers between trophic levels.