Students Get handout - Trouble in Paradise – Story due FRIDAY Pull out Learning logs 80% = 21……parts a, b, c, etc are each 1 Phones in bin…muted or off…please & thank you

Graded “Pocket Mouse video” worksheet Answer key found on-line & used 1st – 1 2nd – 2 4th – 13 6th – 4 7th – 4 8th – 1 Wife read along with me %ages, same order, key common words for 4 questions Review Honor code….. Anyone who accessed answer key – directly or copied I expect some will contact me….that would be good If not by midnight then I will contact you….BAD

Essential Questions LO 1.14 The student is able to pose scientific questions that correctly identify essential properties of shared, core life processes that provide insights into the history of life on Earth. LO 1.15 The student is able to describe specific examples of conserved core biological processes and features shared by all domains or within one domain of life, and how these shared, conserved core processes and features support the concept of common ancestry for all organisms. LO 1.16 The student is able to justify the scientific claim that organisms share many conserved core processes and features that evolved and are widely distributed among organisms today. LO 1.27 The student is able to describe a scientific hypothesis about the origin of life on Earth. LO 1.28 The student is able to evaluate scientific questions based on hypotheses about the origin of life on Earth. LO 1.29 The student is able to describe the reasons for revisions of scientific hypotheses of the origin of life on Earth. LO 1.30 The student is able to evaluate scientific hypotheses about the

More Essential Questions LO 1.31 The student is able to evaluate the accuracy and legitimacy of data to answer scientific questions about the origin of life on Earth. LO 1.32 The student is able to justify the selection of geological, physical, and chemical data that reveal early Earth conditions.

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? Earth is 4.6 billion yrs old (byo) Oldest rocks – 3.8 byo – Greenland Oldest fossils – 3.5 byo How was primitive Earth different than current Earth? Little O2, much H2O, CH4, CO, CO2, N2 Lightning Volcanic activity UV radiation Meteorite bombardment How do we get “the living” from “the non-living?” 1920’s Oparin & Haldane postulated early Earth favored rxns that formed organic cmpds from inorganic cmpds 1953 Miller-Urey experiment test Oparin & Haldane’s hypothesis

Figure 26.2 Can organic molecules form in a reducing atmosphere? Repeated experiments have formed All 20 amino acids several sugars lipids purines & pyrimidines ATP (when phosphate is added) ALL MONOMERS needed for life

Students Thank you for texts, emails, etc – missing 2 students Working together…. Books Trade ins? On tables Phones in bin…muted or off…please & thank you

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? How was primitive Earth different than current Earth? How do we get “the living” from “the non-living?” 1920’s Oparin & Haldane postulated early Earth favored rxns that formed organic cmpds from inorganic cmpds 1953 Miller-Urey experiment test Oparin& Haldane’s hypothesis How were monomers connected to make polymers? Sydney Fox dripped monomers on hot sand, clay or rocks Created proteinoids – polypeptides created by abiotic means What’s next? Protobionts – abiotically produced molecules surrounded by a membrane Primitive cells Coacervate – stable protobiont droplet that self-assembles when a suspension of macromolecules is shaken Imprecise reproduction Simple metabolism & excitability (similar to neurons) How does natural selection fit in? - Protobionts best suited to their environment could reproduce & create others best suited to their environment

Figure 26.4 Laboratory versions of protobionts 20 m (a) Simple reproduction. This lipo- some is “giving birth” to smaller liposomes (LM). (b) Simple metabolism. If enzymes—in this case, phosphorylase and amylase—are included in the solution from which the droplets self-assemble, some liposomes can carry out simple metabolic reactions and export the products. Glucose-phosphate Phosphorylase Starch Amylase Maltose Phosphate Primitive glycolysis – common to all organisms

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? How was primitive Earth different than current Earth? How do we get “the living” from “the non-living?” How were monomers connected to make polymers? What’s next? Protobionts – abiotically produced molecules surrounded by a membrane Primitive cells Imprecise reproduction Simple metabolism & excitability (similar to neurons) How does natural selection fit in? Protobionts best suited to their environment could reproduce & create others best suited to their environment What was the first genetic material? RNA – single stranded Ribozymes – can replicate RNA

Figure 26.5 A ribozyme capable of replicating RNA (RNA molecule) Template Nucleotides Complementary RNA copy 3 5 Collections of RNA molecules best suited for their environment replicate their RNA & reproduce mRNA, rRNA, tRNA all interact with each other now during translation

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? How was primitive Earth different than current Earth? How do we get “the living” from “the non-living?” How were monomers connected to make polymers? What’s next? How does natural selection fit in? What was the first genetic material? 8. What is the origin of photosynthesis? Cyanobacteria (formerly known as blue-green algae) H2S metabolizing bacteria mutated to use……. H2O Released O2 reacted with dissolved iron Formed iron oxide precipitate

Figure 26.12 Banded iron formations: evidence of oxygenic photosynthesis

Students Get 2 handouts Cladogram Activity Investigation:….. (BLAST Lab) Trouble in Paradise – due Friday Parking announcement…. Phones in bin…muted or off….please & thank you

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? How was primitive Earth different than current Earth? How do we get “the living” from “the non-living?” How were monomers connected to make polymers? What’s next? How does natural selection fit in? What was the first genetic material? 8. What is the origin of photosynthesis? Cyanobacteria (formerly known as blue-green algae) H2S metabolizing bacteria mutated to use……. H2O Released O2 reacted with dissolved iron Formed iron oxide precipitate 9. How did eukaryotes originate? - Endosymbiosis

(a) Aerobic prokaryote (b) Photosynthetic prokaryote Figure 26.13 Endosymbiosis (a) Aerobic prokaryote (b) Photosynthetic prokaryote 0.2 m 1 m Respiratory membrane Thylakoid membranes Serial endosymbiosis gave rise to proposed phylogenetic tree

Figure 28.3 Diversity of plastids produced by secondary endosymbiosis Cyanobacterium Heterotrophic eukaryote Primary endosymbiosis Red algae Green algae Secondary Plastid Dinoflagellates Apicomplexans Ciliates Stramenopiles Euglenids Chlorarachniophytes Alveolates Plastid – plant organelle

Ch 26: The Tree of Life-An Intro to Biological Diversity What do you know about the origins of life on Earth? How was primitive Earth different than current Earth? How do we get “the living” from “the non-living?” How were monomers connected to make polymers? What’s next? How does natural selection fit in? What was the first genetic material? 8. What is the origin of photosynthesis? How did eukaryotes originate? What is the evidence for endosymbiosis? Similarities between bacteria and mitochondria & chloroplasts Size Reproduction by binary fission Small, circular genomes DNA sequence Enzymes & transport systems tRNA & ribosomes for transcription & translation Current endosymbiotic relationships 11. Natural selection over millions of years led to a diversity of the 1st prokaryotes Diversity of organisms led to classification

Figure 26.22 One current view of biological diversity Proteobacteria Chlamydias Spirochetes Cyanobacteria Gram-positive bacteria Korarchaeotes Euryarchaeotes, crenarchaeotes, nanoarchaeotes Diplomonads, parabasalids Euglenozoans Alveolates (dinoflagellates, apicomplexans, ciliates) Stramenopiles (water molds, diatoms, golden algae, brown algae) Cercozoans, radiolarians Red algae Chlorophytes Charophyceans Domain Archaea Domain Eukarya Universal ancestor Domain Bacteria Chapter 27 Chapter 28

Chapter 29 Chapter 30 Chapter 28 Chapter 31 Chapter 32 Chapters 33, 34 Bryophytes (mosses, liverworts, hornworts) Plants Fungi Animals Seedless vascular plants (ferns) Gymnosperms Angiosperms Amoebozoans (amoebas, slime molds) Chytrids Zygote fungi Arbuscular mycorrhizal fungi Sac fungi Club fungi Choanoflagellates Sponges Cnidarians (jellies, coral) Bilaterally symmetrical animals (annelis, arthropods, molluscs, echinoderms, vertebrate) Chapter 29 Chapter 30 Chapter 28 Chapter 31 Chapter 32 Chapters 33, 34

Students Turn in BLAST Lab Review Session – 7AM 3:15 Tomorrow FRQ Test (50 pts) 4 FRQ (1 long & 3 short) 25 pts x 2 Learning logs due Wednesday – MC & Math (50 pts) 36 MC questions (1.25 pts) 31 test bank 5 from AP exams 2 math questions (2.5 pts) Phones in bin… Off or muted Please & thank you

Students Cans (Transport is next week) Separate dry from canned Tie bags & place in bin Log into notebook 4 items from me 31 MC questions 5 AP questions (BLUE) 2 math questions (1/2 sheet) 1 scantron (BLUE) Form A or B?? Get calculator from counter…if needed REMINDER: You signed an Honor Code DO NOT SHARE INFO WITH LATER CLASSES Phones in bin…muted or off…please & thank you Place finished FRQs on my front table