General Bio/ EBIO 1200- week 4- Animal Diversity
General Bio/ EBIO 1200- week 4- Animal Diversity EBIO 1220
Popular in General Biology 2
verified elite notetaker
Popular in Science
This 4 page Class Notes was uploaded by Evan Gallagher on Wednesday January 27, 2016. The Class Notes belongs to EBIO 1220 at University of Colorado taught by Dr. Carol Kearns in Spring 2016. Since its upload, it has received 50 views. For similar materials see General Biology 2 in Science at University of Colorado.
Reviews for General Bio/ EBIO 1200- week 4- Animal Diversity
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 01/27/16
Bio notes 1/29 2/5 Animal diversity 1/29 evidence for endosymbiosis Presence of single loop of DNA in some organelles double membrane around some organelles presence of modern day endosymbiotic relationships Binary Fission of chloroplasts and mitochondria presence of ribosomes within chloroplast and mitochondria eRNA is similar ro bacteria Protists have considerably larger cells than prokaryotes. Compartmentalization, internal membranes that increase surface area, and the evolution if specialized structures help to overcome problems of surface area to volume ratio. Even so, there is probably a limit to cell size. Multicellularity Avoid surface area: volume ratio problems Specialization of parts advantages Less chance of being entirely eaten Review General features of protists: Eukaryotic cell membrane often complex cells with specific strictures cytoskeleton reproduce by mitosis sexual reproduction by meiosis variation in life cycles aerobic most, but not all are unicellular Ecological features Require moisture important in nutrient cycling important in primary productivity free living, epizootic and endoparasitic forms exists Trypanosomes Trypanosomes that cause african sleeping sickness; transmitted by tsetse fly. Effects central nervous system Leishmaniasis parasite transmitted by sand flies in tropical areas. Affects lymphatic system and causes skin lesions Diatoms Diatoms are responsible for 31% of the ocean’s primary productivity. They have a 2part silica shell. The shells are very strong and persist long after the organism dies. People use the shells for many things like cat litter, insulators and filters in pools Dinoflagellates “Whirling” flagellates with two flagella 28% of the oceans primary productivity. Auto troops and heterotrophs. Many of these are Bioluminescent Plates of silica and cellulose surround the living cell some have a complex eyespot and lens which can focus on prey Chapter 27: Introduction to animal diversity: Choanoflagellate Unicellular and colonial organisms; related to animals possibly uniellilat ancestor of animals. Choanoflagellate cells are found in sponges. Similar cells are found in cnidarians, flatworms, and echinoderms DNA sequences indicate that choanoflagellate and animals are sister groups Endoderm inner lining of digestive tract, respiratory tract and lungs, liver pancreas ectoderm outermost layers, nervous systems mesoderm muscle, bone, reproductive organs, kidneys, circulatory system. df Body layouts radial symmetry: the body is circular and can be cut down the middle at any point and it would be the same on both sides Bilateral symmetry: Can be cut down the center at one point and will be the same on both sides Advantages of an internal, fluid filled body cavity: cushion organs hydrostatic skeleton allows for enlargement of organs stores waste stores gametes simple circulatory system 2/3- Most animals have bilateral symmetry the bast majority of animal species belong to the clade bilateria which consists of animals wit h bilateral symmetry and triploblastic development 2/5 Echinoderms • sea stars, sea urchins, sand dollars, sea cucumbers, sea lilies • most Echinoderms are slow moving or sessile marine animals with a bumpy or spiny skin covering a hard calcareous endoskeleton • echinoderms have a unique water vascular system, a network of water filled tubes branching into tube feet that function for locomotion, feeding, and gas exchange
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'