BIOL 101 Lecture Notes - Lecture 10: Proteoglycan, Collagen, Motility
13 Jan 2016
School
Department
Course
Professor
Document Summary
Use pre-formed organic materials as energy & carbon source. Most use internal processes to break down food. Most have internal gut continuous with outside environment, permits internal digestion of food items. Prokaryotes, protists, fungi and plants all have: multicellularity: heterotrophic members. Cells can become specialized to carry out specific functions. Helps overcome the surface area/volume constraint on growth: no cell walls; types of structural support: Non-living covering that does not grow with animal. Some invertebrates (non-living, caco3: motile at some life stage. E. g. barnacle (belongs to crustacea: somatic (body) cells are diploid (2n, animals are diplontic. Having a life cycle in which the main form, except for gametes, is diploid. Tissues: groups of similar cells organized into a functional unit. Can function together as organs to complete more complex tasks. > 1 million species classified, even more exist. Closest living relatives to ancestral animals are colonial choanaflagellate protists. Ancient fossils found in burgess shale, b. c.
