Life Lesson 1 PDF

B WHAT ARE CALLED THE REMAINS OF LIVING ORGANISM USED IN UNDERSTANDING THE HISTORY OF LIFE ON EARTH? a. bone c. seeds b. fossils d. shells  WHICH STATEMENT IS NOT TRUE OF FOSSILS? a. Plants can form fossils. b. Some bacteria can form fossils. c. Most extinct organisms have been prese...

B WHAT ARE CALLED THE REMAINS OF LIVING ORGANISM USED IN UNDERSTANDING THE HISTORY OF LIFE ON EARTH? a. bone c. seeds b. fossils d. shells  WHICH STATEMENT IS NOT TRUE OF FOSSILS? a. Plants can form fossils. b. Some bacteria can form fossils. c. Most extinct organisms have been preserved. d. A small percent of extinct organisms is preserved.  WHICH OF THE FOLLOWING CAN BE CONSIDERED AS A FOSSIL? a. a billion-year old rock b. a billion-year old piece of amber c. a billion-year old amber with a primitive insect inside d. the choices are all correct WHICH STATEMENT BEST SHOWS THE MAIN SIGNIFICANCE OF STUDYING THE PAST? a. The past is attractive to look back. b. It will give jobs for many scientists and paleontologists. c. It will allow them to think what they need to study. d. Understanding the past allows us to predict the future and help in creating it. ONE SIGNIFICANCE OF KNOWING THE HISTORY OF LIFE IS TO DETERMINE THE ORIGIN OF ONE LIVING ORGANISM. ACCORDING TO RESEARCHERS, WHICH OF THE FOLLOWING ARE THE ONLY SURVIVING SPECIES OF THE GENUS HOMO AND ONE OF THE LIVING EVIDENCES THAT LIFE HAS EXISTED ON EARTH? a. birds c. human beings b. dinosaurs d. sponges OVER THE PAST DECADES, THERE ARE CHALLENGES THAT THE ENVIRONMENT HAS FACED. PANDEMICS AFFECTED THE LIVES OF VARIOUS LIVING ORGANISMS. WHAT IS THE SIGNIFICANCE OF KNOWING THIS HISTORY? a. It will give them an income. b. They will just be informed about it. c. It will lead them to know the history of life. d. It will give an idea on how medical world will seek for the treatment.  WHY DO YOU THINK THE EMERGENCE OF PLANTS AND ANIMALS CAME LATER THAN SIMPLE LIVING ORGANISMS? A. They are too big and take time to form. B. They are the least important factor in the environment. C. Their cell structures are more complex. D. They contain more nucleus compared to lower forms of organisms. CONSIDERING THE PRESENT CONDITION OF THE ENVIRONMENT, DO YOU THINK LIVING ORGANISMS ARE STILL EVOLVING TODAY? A. Yes, because humans continuously alter the environment that triggers evolution among living organisms in order to survive. B. No, because the environment remains favorable to living organisms. C. Yes, because it is a natural phenomenon which we cannot stop from happening. D. No, because there is no condition outside their bodies that will trigger evolution. WHERE IS THE FIRST FORM OF LIFE SEEN? A. microfossils B. layers of rocks C. oceanic crusts D. sediments WHICH OF THE FOLLOWING PROCESSES BROUGHT CHANGES IN THE EARLY ATMOSPHERE? A. earthquake C. photosynthesis B. extreme condition D. volcanic eruption WHAT IS LIFE SCIENCE? A collection of disciplines that is made up of theories and principles that tackles the structure and function of living things starting from the molecules up to the entire ecosystem. EVOLVING CONCEPTS OF LIFE BASED ON EMERGING PIECES OF EVIDENCES PRIMORDIAL SOUP THEORY PROPOSED BY ALEXANDER OPARIN AND JOHN HALDANE LIFE STARTED IN A PRIMORDIAL SOUP OF ORGANIC MOLECULES WHERE ENERGY IS ADDED TO THE GASES THAT MADE UP EARTHS’ EARLY ATMOSPHERE, THE BUILDING BLOCKS OF LIFE WOULD BE CREATED  ACTIVITY TIME: MY LIFE IN A TIMELINE IN A 1 WHOLE SHEET OF PAPER, CREATE A TIMELINE THAT REFLECTS THE MEMORABLE EVENTS THAT HAPPENED TO YOU IN THE PAST GEOLOGIC TIME SCALE REPRESENTATION OF TIME BASED ON THE ROCK RECORD ON EARTH. A SYSTEM OF CHRONOLOGICAL DATING CALENDAR OF EVENTS IN EARTHS HISTORY FOSSILS ARE THE PRESERVED REMAINS OF PLANTS AND ANIMALS WHOSE BODIES WERE BURIED IN SEDIMENTS UNDER ANCIENT SEAS, LAKES AND RIVERS. PRESERVED TRACES OF LIFE MICROFOSSILS ARE TINY REMAINS OF BACTERIA, PROTISTS, FUNGI, ANIMALS AND PLANTS  TIMELINE OF APPEARANCE OF LIFE FORMS  HADEAN (EARLY EARTH DEVELOPMENT) 4.6 -3.8 BILLION YEARS AGO THE EARLY EARTH IS SAID TO BE VIOLENT BECAUSE OF METEORSITES AND VOLCANIC ERUPTIONS. THIS CONDITIONS CREATED ZIRCON CRYSTALS  ARCHEAN (PERIOD OF APPEARANCE OF THE FIRST PROKARYOTES) 3.5 BILLION YEARS AGO LIFE ON EARTH INITIALLY BEGAN WITH PROKARYOTES, DISCOVERED IN SEDIMENTARY ROCK FORMATIONS CALLED STROMATOLITES  INSIDE OF STROMATOLITE 3 BILLION YEARS AGO THE FIRST PHOTOSYNTHETIC ORGANISMS THRIVED THE EARTH WHICH IS A BLUE GREEN ALGAE CALLED CYANOBACTERIA  PROTEROZOIC EON (PERIOD OF APPEARANCE OF THE FIRST EUKARYOTES) 2 BILLION YEARS AGO APPEARANCE OF THE FIRST EUKARYOTES AND THE INFLUX OF MULTICELLULAR ORGANISMS  PALEOZOIC ERA (DOMINANCE OF APPEARANCE OF THE FIRST TRILOBITES) 5OO MILLION YEARS AGO THE PALEOZOIC ERA WHEN TRILOBITES AND CEPHALOPODS BECAME DOMINANT IN THE OCEAN PARTICULARLY DURING THE CAMBRIAN AND ORDOVICIAN.  MESOZOIC ERA (DOMINANCE OF DINOSAURS) 251-65.5 MILLION YEARS AGO THE AGE OF REPTILES DIVIDED INTO TRIASSIC, JURASSIC AND CRETACEOUS PERIOD CENOZOIC ERA (RECENT LIFE) 250 THOUSAND YEARS AGO THE RECENT LIFE AGE OF MAMMALS PLANTS AND ANIMALS LOOK MOST LIKE WHAT WE SEE TODAY HOMO ERECTUS HAS EVOLVED GENUS HOMO GAVE RISE TO MODERN HUMANS THAT COINCIDES WITH THE FIRST EVIDENCE OF STONE TOOL USAGE AMNIOTES FIRST MAMMALS THAT ARE DIRECT ANCESTORS EVOLVED FROM EOZOSTRODON EARLIEST KNOWN MAMMALS A MARINE ANIMAL FIRST EVOLVED AT THE BEGINNING OF THE CAMBRIAN PERIOD EXTINCT SPECIES OF THE GENUS HOMO FROM WHICH THE MODERN HUMANS HAS EVOLVED FROM A BASIC CELL TYPE THAT LACKS A TRUE NUCLEUS GIANT REPTILES THAT ROAMED THE EARTH DURING THE MESOZOIC ERA THIS BASIC CELL TYPE CONTAINS A TRUE NECLEUS THAT CONTAINS DNA BLUE GREEN ALGAE THAT IS THE FIRST PHOTOSYNTHETIC ORGANISM THAT THRIVED DURING THE PROTEROZOIC EON FIRST CRYSTAL FORMED DURING THE HADEAN ERA THAT PRESERVES THE CHEMICAL CHARACTERISTICS OF ROCKS. MOUNDS THAT ARE THE OLDEST FOSSILS THAT CONTAINS LIFE ON EARTH THIS IS THE OF AGE OF DINOSAURS. PRESERVED REMAINS OF PLANTS AND ANIMALS WHOSE BODIES ARE BURIED IN SEDIMENTS.