1) What are Protozoans? Are they animals? Then why are we studying them? Are protozoan cells more or less complex than the cells of multi-cellular organisms? Why? Of the 29 or so animal phyla, how many include vertebrates (fish, amphibians, reptiles, birds, or mammals)?

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Elin HesselLv2

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Write your big picture goal for this experiment, using language that a non-biologist could understand.

(I have been struggling using non-biologist lingo because the teacher has been docking me every time i've done a prelab so I need help with phrasing please. this is the summary of the experiment:

The banding patterns on your gel reveal information about the protein composition of muscle

from your seafood samples. Proteins are synthesized according to the genes of an organismâs DNA. Since closely related organisms share similar DNA sequences, the proteins encoded by their DNA should be very similar as well, and similar protein compositions should be reflected in banding patterns. Different branches of related organisms separated at different evolutionary times. The further apart species are on the tree, the less related they are. Mollusks and arthropods diverged from one another before the emergence of chordates, animals with backbones, very early in evolutionary time. These animals are only distantly related to fish, birds, reptiles, mammals and amphibians, which are more closely related to each other. We will compare the information we can obtain from protein samples with the information we can obtain from DNA analysis of these organisms.)

rubygnu811

1.What are the advantages of organisms having a 4-chambered heartover less chambers?

2. The differences of Nitrogen waste elimination between mostaquatic animals, mammals, and birds.

3. Domarine fish drink seawater? If so, how do they regulate the saltintake?

4.Organisms like jellyfish, spongesand flatworms do not have a circulatory system or lungs. Whatadaptations do these organisms have for oxygen delivery?

Please explainanswer FULLY (2-3SENTENCES) for each question for full points and 5 starrating!

turquoisecod681

. List and describe 3 synapomorphies for the clade Eukaryota 2. Define clade, homology, synapomorphy, and analogy in your own words. 3. Explain the role of symbiotic associations in the evolution of major eukaryotic organelles. What evidence supports this role? 4. Name and describe an example of a single-celled protozoan from each of the following Eukaryote lineages: Unikonts, Rhizaria, Aveolates, and Excavates (hint â we looked at each of these in lab). 5. Define the term parsimony and explain how it is used in determining evolutionary relationships among organisms. 6. Describe the cytoskeleton of Eukaryotes. What types of proteins does it consist of? What is it used for? 7. Examine Table 1.1 in your textbook. There are just 6 Phyla (not Subphyla) of animals that contain 1% or more of the wroldâs animal species. Which ones are they?