Difference Between Mold and Yeast






Habitat Typically found in damp, dark or steam-filled areas. Very common. Can be found on fruit and berries, in the stomach of mammals and on skin, among other places.


Cell Multicellular (multiple celled) Unicellular (one cell)


Shape Filamentous fungi, Threadlike Round or oval in shape


Appearance Fuzzy appearance and can be an orange, green, black, brown, pink or purple in color. White and thready.


Hyphae Molds have microscopic filaments called hyphae. Yeasts do not have true hyphae. Instead they form

multicellular structures

called pseudo-hyphae.


Types There are 400,000 types of molds. There are 1500 types of yeasts.


Sporing Mold is a sporing fungi Yeast is a not a sporing species of fungi.


Reproduction Sexually and asexually reproduce into multi-cellular form. They reproduce mostly asexually (budding).


Asexual Spores Sporangiospores and Conidia Blastospore


Sexual Spores Zygospores, Ascospores, and Basidiospores No Sexual Spores.


Colorful Molds are very colorful compared to yeast. Yeast are less colorful compared to molds (colorless).


Examples Alternaria, Aspergillus, Fusarium, Mucor, Penicillium, Rhizopus, Trichophyton, etc. Saccharomyces cerevisiae, Cryptococcus neoformans, etc.


Energy Production Secrete hydrolytic enzymes that degrade biopolymers such as starch, cellulose and lignin into simpler substances that can be absorbed. Convert carbohydrates to alcohol and carbon dioxide in anaerobic through fermentation. Also obtain carbon from hexose sugars.


Uses Useful in biodegradation, food production (cheese) Making of alcoholic beverages which contain ethanol, used in baking, bioremediation, industrial ethanol production, probiotics, and food addictive or flavors.


Health Hazards Can cause allergic reactions and respiratory problems. Can cause infection in individuals with compromised immune systems.

2 thoughts on “Difference Between Mold and Yeast”

  1. Thanks for your clear answer. Can I ask you another question? Can Electro Magnetic Fields cause Candidiasis (yeast overgrowth). Our bedroom was 30 meters from a cell tower for approximately six years. It caused a number of symptoms which we were able to positively identify with wireless radiation. Later, after following an anti-candida diet for a few weeks, we had the same symptoms that we had from the EMF. Have you ever heard that wireless radiation can cause candida to overgrow? Thanks for your time.

    • Hello Lydia, I’m a PhD in Mycology and I can help you with that. While you are on the right track with that thinking, my research has found that cell tower radiation does nothing related to said overgrowth, however we have found out that the dissipate electromagnetic energy from televisions and most current generation screens does cause this overgrowth you speak of, perhaps you have a television in the house that’s regularly used – or maybe a neighbor of yours has a old CRT one, as we also discovered that the radiation from these has a stronger, more lingering effect than current generation ones.

      Kindest regards,
      Jeremy Robertson

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