mid term exam 1407 (1)

Microscopic Organisms

Trypanosome sp.

• Shape: Spiral-shaped

• Kingdom: Protista

• Phylum: Euglenozoa

• Note: Causes African Sleeping Sickness

Bacillus subtilis

• Shape: Rod (Bacillus)

• Kingdom: Bacteria

• Characteristics: Gram positive (+), commonly found in soil, used in probiotics

Penicillium sp.

• Kingdom: Fungi

• Note: Produces penicillin antibiotic

Ulva sp.

• Shape: Sheet-like

• Kingdom: Plantae

• Phylum: Chlorophyta

• Description: Green algae (sea lettuce)

Saccharomyces cerevisiae

• Shape: Oval

• Kingdom: Fungi

• Note: Important in baking and brewing

Staphylococcus epidermidis

• Shape: Cocci (round)

• Kingdom: Bacteria

• Characteristics: Gram positive (+), commonly found on human skin

Plasmodium vivax

• Kingdom: Protista

• Note: Causes malaria

Forams

• Shape: Various shapes with calcium carbonate shells

• Kingdom: Protista

• Phylum: Foraminifera

• Description: Marine organisms

Escherichia coli

• Shape: Rod (Bacillus)

• Kingdom: Bacteria

• Characteristics: Gram negative (-), found in intestines, some strains harmful

Nostoc sp.

• Shape: Filamentous

• Kingdom: Bacteria (Cyanobacteria)

• Note: Fixes nitrogen in aquatic environments

Gram Staining Differences

• Gram Positive: Thick peptidoglycan layer, stains purple.

• Gram Negative: Thin peptidoglycan layer, outer membrane, stains pink.

Microscopic Organisms

Trypanosome sp.

• Shape: Spiral-shaped

• Kingdom: Protista

• Phylum: Euglenozoa

• Note: Causes African Sleeping Sickness

Bacillus subtilis

• Shape: Rod (Bacillus)

• Kingdom: Bacteria

• Characteristics: Gram positive (+), commonly found in soil, used in probiotics

Penicillium sp.

• Kingdom: Fungi

• Note: Produces penicillin antibiotic

Ulva sp.

• Shape: Sheet-like

• Kingdom: Plantae

• Phylum: Chlorophyta

• Description: Green algae (sea lettuce)

Saccharomyces cerevisiae

• Shape: Oval

• Kingdom: Fungi

• Note: Important in baking and brewing

Staphylococcus epidermidis

• Shape: Cocci (round)

• Kingdom: Bacteria

• Characteristics: Gram positive (+), commonly found on human skin

Plasmodium vivax

• Kingdom: Protista

• Note: Causes malaria

Forams

• Shape: Various shapes with calcium carbonate shells

• Kingdom: Protista

• Phylum: Foraminifera

• Description: Marine organisms

Escherichia coli

• Shape: Rod (Bacillus)

• Kingdom: Bacteria

• Characteristics: Gram negative (-), found in intestines, some strains harmful

Nostoc sp.

• Shape: Filamentous

• Kingdom: Bacteria (Cyanobacteria)

• Note: Fixes nitrogen in aquatic environments

Gram Staining Differences

• Gram Positive: Thick peptidoglycan layer, stains purple.

• Gram Negative: Thin peptidoglycan layer, outer membrane, stains pink.