Citrus College Life in The Universe Questions

Here are the questions i just need the answers A cell uses ATP to build proteinsrepair DNAproduce enzymesstore energy A genome is the information required to make an organismthe rules used to read a string of DNAthe nolecule that takes genetic information to other places in the cellthe chemistry of organic moleculesthe chemistry of life Earth has a core-mantle-crust structure because of the carbon cycleconvectionplate tectonicsdifferentiation Which of the following is not key evidence in support of the idea that all life today shares a common ancestor? All life uses DNA to store genetic information.Mapping of gene sequences shows how life is all related.We have identified fossils of the first lifeforms that ever existed on Earth.All life builds proteins from the same amino acids The earliest evidence for life on Earth dates to about 65 million years ago.about 3.8 billion years ago.about 2 billion years ago.about 570 million years ago.about 4.5 billion years ago. The molecular building blocks of life have been found only on Earth only on terrestrial planetonly on planets in their star’s habitable zonesin many places Why are fossils of early life on Earth more rare than fossils of plants and animals from the past few hundred million years? Life was far less abundant prior to a few hundred million years ago.We find fossils in sedimentary layers, and no sediments were deposited until just a few hundred million years ago.Early organisms lacked skeletons and other hard structures that are most likely to be fossilized.Fossils could not form before there was oxygen in the atmosphere. Tardigrades are exceptional in that they are complex animals that can reproduce asexuallylive in high-salinity environmentswithstand radiationtravel between planets A fossil is found in a layer of rock above another layer dated at 2 million years. From this we can tell that the age of the fossil is between 2 and 3 million yearsolder than 3 million yearsolder than 2 million yearsyounger than 2 million years The fact that life on Earth seems to have appeared quite rapidly suggests that life is only possible on Earth-like planetson any kind of planet is inevitablecan only appear soon after a planet formscan arise on most habitalbe worlds Most of the universe is made up of hydrogen and helium.hydrogen and oxygen.carbon and oxygen.carbon and nitrogen. 12) Carbon, Oxygen, and Nitrogen, the main chemical building-blocks of life were formed in the center of the Earth and ejected onto the surface via volcanismin the Big Banginside interstellar gas clouds during star formationin the centers of stars and eject into space when they died 13) Which of the following is considered by biologists to be a likely place where life first arose on Earth? on meteorites that landed on Earthin hot water near undersea volcanoesdeep undergroundin places that got moderately heavy rainfall The possibility of extraterrestrial life was first considered at the turn of the 20th centuryduring ancient timesafter the invention of the telescopeduring the past few decades Earth’s current aatmosphere came primarily from gas pulled in by the Earth gravitationallyvolcanos on the Earth’s surfacematter blasted from the Earth’s surface in collisionsgas trapped by the Sun 16) The only place outside of Earth where there is irrefutable evidence for (ancient, microbial) life is Europa.Titan.None of the above–there is no irrefutable evidence for life beyond Earth.the Moon.Mars. 17) Short Answer:Answer one A question and one B question in several sentences to one paragraph each. 50 points per answer. Do not write more than one paragraph.A-1) Which categories of objects exist in the solar system and how does the nebular theory explain how these objects were formed? A-2) What are the geophysical conditions arising from the fact that Earth is still warm inside? How do these conditions contribute to our planet being suitable for life?B-1) How does the fossil record show that Earth experienced a mass extinction 65 million years ago? Which types of evidence point to this event being caused by a giant impact? B-2) What are the underlying beliefs of people with growth andfixed mindsets? How do these types of people differ in regards toexerting effort, facing challenges, reacting to mistakes, and receiving feedback