Bio 1108

BIO 1108 -BIODIVERSITY EXAM QUESTIONS AND ANSWERS A+ GRADED What types of data are used in creating phylogenetic trees? Morphological data - structural features, organs, skeletal arrangements, developmental features Genetic data - mtDNA, Ribosomal RNA, lots of different genes Homology - similarity due to common ancestry, trait shared by all descendants and common ancestor, define monophyletic groups Parsimony the most likely pattern is the one requiring the fewest changes What is the ...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED ________ is general name for a close, extended relationship between two different species; one or both species benefits symbiosis _________succession occurs when plants become established on barren soil or rocks where there has been no previous growth or where all previous traces of life have been destroyed primary ________ is the set of factors acting upon an organism to determine its survival environment _______ is the living factors rel...

BIO 1108 DEUTEROSTOMESEXAM QUESTIONS AND ANSWERS A+ GRADED Echinodermata and Chordata What two phylums make up Deuterostomes? radial; indeterminate Deuterostomes have _____ and _______ cleavage and cell fate at the early stage of development. anus the first mouth of deuterostomes becomes the _____ pinches In deuterostomes, the coelom forms as the mesoderm germ layer _____ off the gut. echinoderms includes sea urchins, sand dollars, sea stars, sea cucumbers; bottom dwelling marine ...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED what organism is most closely related to animals choanoflagellates choanoglagellates a group of single celled eukaryotes how are choanoflagellates similar to sponges there are similarities in cell shape between choanoglagellates and the feeeding cells of sponges. what organisms are multicellular? plants fungi animals are animals heterotrophs? yes what is a heterotroph An organism that cannot make its own food. what organisms are hete...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED Choose the right term Gram - bacteria cell wall contains a (thin/thick) peptidoglycan layer Gram + bacteria cell wall contains a (thin/thick) peptidoglycan layer Gram - : THIN Gram + : THICK Bacteria uses ____ as a core component of the cell walls peptidoglycan Archaea uses ____ as a core component of the cell walls pseudopeptidoglycan What type of cell undergoes mitosis? Eukaryotes Mitosis divides into ____ cells 2 genetically identic...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED Is it possible for 2 red snapdragons from species 1 to have white offspring if they are both heterozygous? yes, because heterozygotes are red and if 2 heterozygotes were to cross, 1/4 of their offspring will be white. Is it possible for 2 red snapdragons from species 2 to have white offspring if they are homozygous? No, because the red ones in species 2 are all homozygous A individuals. That means none of their offspring will be white. This i...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED Why does meiosis result in more genetic variation than can be explained by mutation alone? crossing over At the end of mitosis, daughter cells are ___, whereas at the end of meiosis, daughter cells are ___. diploid; haploid A zygote is: diploid. A parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place _____. the parent cell must first achieve a specified size Which one ...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED Plants Originated from green algae multicellular eukaryotic photosynthetic autotrophs cell walls made of cellulose Derived traits of plants 1. alternation of generations 2. multicellular, dependent embryos 3. walled spores produced in sporangia 4. multicellular gametangia 5. apical meristems Multicellular, dependent embryos WThe diploid embryo is retained within the tissue of the female gametophyte Nutrients are transferred from pare...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED -They have organelles and need more space to house them -They are more complex and divide biological functions up among organelles -Organelles increase the surface area in a cell, allowing for more efficient exchange of resources and biological work in the cell Why are eukaryotic cells big? The origin of eukaryotic cells through the integration of prokaryotic cells (now mitochondria and chloroplasts) into an ancient cell line What does endo...

BIO 1108 EXAM QUESTIONS AND ANSWERS A+ GRADED Animals cell structure multicellular organisms cells lack cell walls extracellular matrix for cellular support unique cell functions anchoring junctions tight junctions cell junctions locations where cells are linked together anchoring cell junctions link cells to each other and extracellular matrix - found where cells link together to form linings - example (lining of small example) tight cell junctions form a tight seal between c...