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Class: Date: Namer Bio 341 Exam3 17. Linnacus simplified scientific classificati

ID: 254330 • Letter: C

Question

Class: Date: Namer Bio 341 Exam3 17. Linnacus simplified scientific classification by developing a clades. b. kingdoms e. supergroups d. phylogenetic trees. e. binomial system of nomenclature. h disease is caused by an exotoxin released by the gram-positive, endospore-forming bacteria, often because food was not heated sufficiently to kill the endospores? a. cholera b. botulism c diphtheria d. salmonella e. travelers" diarrhea 19. The phylogenetic analysis of nucleotide sequences for a group of retroviruses has allowed there are major types of HIV that originate from one ancestral leativirus. to discover that b. two cfour d. ten ?.fourteen 20. How do some bacteria respond to adverse environmental conditions? a. Bacteria shrink in size b. Bacteria form endospores. c. Bacteria release exotoxins d. Bacteria develops a cyst and fills it with luid e. Bacteria build up more protein in their capsules 21. An example of homoplastic structures is the wing of a butterftly and a wing of a moth. b. wing of a bird c. antenna of a moth. d. legs of the butterfly e. antenna of the butterfly 22. Shared homologous structures would indicate that two taxa are: a outgroups b. monophy letic. c. polyphyletic. e. in different clades. Page A Copyright Cengage Leaming Powered by Cogner

Explanation / Answer

17. e- Linneaus simplified the scientific classification by developing the binomial system of nomenclature.

18.b- botulism is a disease that is caused by the bacteria when it releases endotoxin, when the food is not properly heated to kill the endospores.

19. b- two, The phylogenetic classification of the nucleotide sequences for a group of viruses have revelaed that there are two types of HIV that are derived from single lentivirus.

20.b- Bacteria form endospores in response to adverse environmental conditions.

21. b- Wings of a bird are homoplastic or analogous to wings of a butterfly.

22. d- Homoplastic shows that the two taxa share homologous structures