Microbiology Chapter 5 UTA Tholen Correctly Answered Questions| UpToDate | Already Graded A+
Eukaryotic Microbes : Extremely diverse; Different life cycles & reproduction modes; Many morphologically specialized structures; Specialized nutritional needs Eukaryotic groups : protozoa, helminths, fungi, algae, and lichens Protozoa : Wide variety of unicellular, nonphotosynthetic, motile eukaryotic microbes, Not a formal taxa group Protozoa Life Stages : Trophozoites - feeding & growth stages; Cysts - encapsulated stage to protect against harsh environments Protozoa Reproduction : ITS BOTH ASEXUAL AND SEXUAL; asexual- binary fission, budding, or schizogeny; Sexual - fusing of 2 | P a g e haploid gametes (syngamy) or conjugation (different from bacteria) Protozoa Cell Structures : Plasmalemma - protozoan membrane; Pellicle membranes with bands of protein to provide rigidness; Shape is created by ectoplasm or endoplasm Protozoa Feeding Structures : Cytostome - taking up food/nutrients; Cilia sweep food towards openings; Holozoic protists-take in whole particles; Saprozoic protists-take in smaller molecules Protozoa Locomotion : pseudopods, flagella, cilia Protozoa Unique Organelles : Contractile vacuoles - help regulate osmotic pressure; Mitochondria may be absent or modified with; Kinetoplast DNA bundles located by basal body of flagella OR Hydrogenosomes to produce ATP without O2 Protozoan Taxonomy : Ameobozoa, Excavata Chromalveolata Ameobozoa 3 | P a g e : Group of protists that have amoeba-like movement thru pseudopodia Ameobozoa: Entamoeba histolytica : agent for amoebic dysenter
Content preview
Document information
- Uploaded on
- May 20, 2024
- Number of pages
- 9
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers