Broth Culture Growth Studio

Temperature, oxygen, and bacterial growth in a virtual broth

Use simple sliders to see how changing temperature and oxygen availability affects bacterial growth rate, turbidity color, and a basic growth curve. Designed for early undergraduate microbiology.

Teal-themed, low-cognitive-load

37°C + high O₂ → fast growth (model organism). Lower / no O₂ → slower or limited growth (for aerobes).

Low cell density (clear / pale broth)

Moderate growth (light teal-green)

High growth (deep teal, turbid)

Growth curve line

Broth turbidity & growth curve

Temperature

Incubation (°C) — assume mesophilic aerobe (optimum ~37°C)

37°C

Oxygen level

Relative O₂ (%) for an obligate aerobe-style organism

80%

At 37°C and 80% O₂, conditions are near optimal for a typical aerobic lab bacterium: the broth deepens in teal as cells multiply quickly, and the growth curve rises steeply.

Relative growth rate

0.95

0 = no growth, 1 = very fast

Carrying capacity (visual)

High

How dense culture can get

Lag/Log tendency

Rapid log phase

Qualitative phase behavior

Conceptual outcome

Vigorous growth

For the chosen conditions

How to read this simulation

We model an aerobic mesophile (like many lab strains) with an optimum near 37°C and high oxygen.
Growth rate increases as you approach this optimum, and drops off at low/high temperatures or when O₂ is low.
The broth color deepens from pale to rich teal as population increases (a stand-in for turbidity).
The growth curve (teal line) shows relative cell density over a short incubation period.
This is a qualitative teaching tool, not a quantitative growth kinetics simulator.

Try these quick checks

Set 37°C & 90–100% O₂: observe deep teal broth and a steep growth curve.
Set 20°C & high O₂: curve is shallower, color change slower → cooler temps slow metabolism.
Set 45–50°C or 0% O₂: growth rate drops near zero; broth stays pale → stress/unsuitable conditions.

Encourage learners to match each visual pattern with terms like optimal range, suboptimal, and no growth for aerobic bacteria.