Algae -eukaryotic photoautotrophs -mostly aquatic
Chrysophyta -golden, yellow-green algae -have chlorophylls a and b and carotene -group also includes diatoms, water molds ----major source of the world's oxygen supply
Chloraphyta -green algae -have chlorophylls a and b
Rhodophyta -red algae -hav...
MCB 100 E2 L15 Test Questions and
Correct Answers
Algae ✅-eukaryotic photoautotrophs
-mostly aquatic
Chrysophyta ✅-golden, yellow-green algae
-have chlorophylls a and b and carotene
-group also includes diatoms, water molds
----major source of the world's oxygen supply
Chloraphyta ✅-green algae
-have chlorophylls a and b
Rhodophyta ✅-red algae
-have red accessory pigment phycoerythrin
-cell walls have agar and carrageenan
Phaeophyta ✅-brown algae
-have chlorophylls a and b, carotene, and xanthrophylls
-cell walls have cellulose and alginate
How do fungi replicate? ✅-by budding or producing spores
Yeasts ✅-unicellular fungi
-grow primarily as unicellular forms that form filaments or hyphae only during mating
-reproduce asexually by budding to form a blastosphere
Dimorphic Fungi w/ Two Forms: ✅-usually (but not always) at ambient temperatures
(~25C) grow as multicellular (multinuclear), filamentous molds
-at body temperatures (37C) they convert into unicellular pathogenic yeast forms
-most of the fungal pathogens we will discuss are dimorphic
Fungi Characteristics ✅-most are saphrobes (absorb nutrients from the remnants of
dead organisms)
-some have modified hyphae (called haustoria) that penetrate into host tissues to get
nutrients
-can cause disease (mycoses = fungal infections)
-cell walls made of chitin (acetylglucosamine polymers) and galactomannans
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