BIO SCI 94 Study Guide - Midterm Guide: Echinoderm, Collagen, Germination

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: Catherine Loudon

Document Summary

Bio midterm 2: b 15. b 14. b 13. d 12. b 11. c 10. lec 9. Many bacteria are necessary to life and health. Archaea and eukarya, sister taxa, more closely related. 3. peptidoglycan in cell walls - bacteria. 4. membrane lipids - bacteria + eukarya, unbranched hydrocarbons // archaea, some branched hydrocarbons. 5. rna polymerase - bacteria, one kind // archaea + eukarya, several kinds. 6. initiator amino acid for protein synthesis - bacteria, formyl-methionine // archaea + eukarya, methionine. 7. introns - bacteria, very rare // archaea, present in some genes // eukarya, present in many genes. 8. act on bacterial ribosomes - bacteria, growth inhibited // archaea + eukarya, growth not inhibited. 9. histones - bacteria, absent // archaea, present in some // eukarya, present. 10. circular chromosomes - bacteria + archaea, present // eukarya, absent. 11. growth at temp > 100c - only some archaea. Conjugation - exchange of genetic material, plasmid, between cells.