I have 10 questions, MCQ and Fill in the blank. biology lab

• Classify protists based on phylogenic relationships, nutritional mode and method of locomotion

• Distinguish between phylogenic relationships and classification schemes (Texas ACGM Student Learning Outcomes)

• Identify structural adaptations of protists (Texas ACGM Student Learning Outcomes)

• Identify evolutionary relationships between protists and other eukaryotic organisms (Texas ACGM Student Learning Outcomes)

The protists are an extremely diverse group of eukaryotic organisms that were once classified in a single kingdom alongside plants, animals and fungi. Today we understand that protists are a polyphyletic group consisting of members that should be separated at a taxonomic level above that of the kingdom (supergroups and subgroups). Some of these groups are more closely related to fungi and animals, others contain the ancestors of plants and some have entirely distinct lineages. Individual species may be multicellular or unicellular and many exhibit unique adaptations. They vary greatly in their morphology, motility, nutritional strategy, and life cycle. In this activity, you will classify protists based on their current taxonomy and other characteristics. Use the “Protists in Motion” video, the information below, internet resources and taxonomy from your lecture material to complete the summary tables.

This parasite causes the diarrheal illness commonly referred to as “Beaver Fever”. It is found on surfaces or in soil, food, or water that has been contaminated with feces from infected humans or animals. Species belonging to this genus have a characteristic tear-drop shape, twin nuclei and an adhesive disk. Four pairs of flagella function for locomotion. Giardia reproduce by binary fission and must be attached to a surface for this to occur.

Trichonympha is a pear-shaped excavate with a tuft of numerous flagella. This genus of protists lives in the hindgut of termites in an obligate mutual relationship. The termites ingest wood particles from which the protist derives its nutrition while it assists the termite in digesting cellulose from wood. Individuals may reproduce asexually via cellular division. Sexual reproduction is stimulated by molting of the host.

The parasitic eukaryote, Trypanosoma is a heterotrophic organism that causes African Sleeping Sickness. The parasite is transferred to the bloodstream by the bite of infected tsetse flies. Within the blood it mutates and invades the central nervous system (CNS). Once inside the CNS, it causes severe fatigue and other symptoms. Its single flagellum is anchored along the length of the cell membrane, producing an undulating membrane. A specialized structure called the kinetoplast is found within a large mitochondrion at the base of the flagellum. These protists reproduce primarily via asexual reproduction.