Joy of Science
... long protein chains and nucleic acid can be made using more simple chemical molecules such as nitrogen (N2) and carbon dioxide (CO2) than methane or ammonia à Early Earth’s oceans produced a rich broth of amino acids and other molecules created by M-U process for perhaps several hundred million yea ...
... long protein chains and nucleic acid can be made using more simple chemical molecules such as nitrogen (N2) and carbon dioxide (CO2) than methane or ammonia à Early Earth’s oceans produced a rich broth of amino acids and other molecules created by M-U process for perhaps several hundred million yea ...
energy, chemical reactions and organic compounds list the four
... are amphiphilic, the fatty acid tail is hydrophobic and the phosphate head is hydrophilic. Eicosanoids – are derived from a fatty acid called arachidonic acid. They primarily function as hormone‐like chemical signals between cells. Prostaglandin is a cell which is produced in all tissues and play ...
... are amphiphilic, the fatty acid tail is hydrophobic and the phosphate head is hydrophilic. Eicosanoids – are derived from a fatty acid called arachidonic acid. They primarily function as hormone‐like chemical signals between cells. Prostaglandin is a cell which is produced in all tissues and play ...
get Assignment File
... Cell membrane controls what goes in and outselective permeablility – some stuff can move others not ...
... Cell membrane controls what goes in and outselective permeablility – some stuff can move others not ...
video slide
... How did life on earth get its start? • Stanley Miller and Harold Urey conducted lab experiments that showed abiotic synthesis of organic molecules is possible • Amino acids have also been found in meteorites • Small organic molecules polymerize when they are concentrated on hot sand, ...
... How did life on earth get its start? • Stanley Miller and Harold Urey conducted lab experiments that showed abiotic synthesis of organic molecules is possible • Amino acids have also been found in meteorites • Small organic molecules polymerize when they are concentrated on hot sand, ...
Big Bang Theory
... The First Supercontinent • By the end of the Precambrian period, approximately 700 million years ago, all land masses had gathered into the single supercontinent Rodinia, surrounded by the Panthalassic Ocean. ...
... The First Supercontinent • By the end of the Precambrian period, approximately 700 million years ago, all land masses had gathered into the single supercontinent Rodinia, surrounded by the Panthalassic Ocean. ...
sugar
... Proteins have many different functions. Proteins are build from individual units called called an amino acid. Examples include: ...
... Proteins have many different functions. Proteins are build from individual units called called an amino acid. Examples include: ...
Document
... product of a series of extremely fortunate accidents (astronomical, geological, chemical, and biological events unlikely to have happened anywhere else in the universe). ...
... product of a series of extremely fortunate accidents (astronomical, geological, chemical, and biological events unlikely to have happened anywhere else in the universe). ...
Notes
... All living things are “chemical factories” driven by ________________________________ Sometimes the input and amount of energy needed for a reaction to occur is so _____________, that the reactions would occur incredibly slow if allowed to occur on their own In order to reduce the activation e ...
... All living things are “chemical factories” driven by ________________________________ Sometimes the input and amount of energy needed for a reaction to occur is so _____________, that the reactions would occur incredibly slow if allowed to occur on their own In order to reduce the activation e ...
Chapter 6: Chemistry in Biology
... Substances that release hydrogen ions ( H ) when dissolved in water are called __________. Substances that release hydroxide ions ( OH ) when dissolved in water are called __________. pH and Buffers: The measure of concentration of H in a solution is called __________. ...
... Substances that release hydrogen ions ( H ) when dissolved in water are called __________. Substances that release hydroxide ions ( OH ) when dissolved in water are called __________. pH and Buffers: The measure of concentration of H in a solution is called __________. ...
C7 Revision Earth and atmosphere[1].
... as Earth’s temperature cooled, water vapour c………………………………….. and formed the oceans ...
... as Earth’s temperature cooled, water vapour c………………………………….. and formed the oceans ...
C7 Revision Earth and Atmosphere
... as Earth’s temperature cooled, water vapour c………………………………….. and formed the oceans ...
... as Earth’s temperature cooled, water vapour c………………………………….. and formed the oceans ...
Chapter 2 – Chemical Composition of the Body
... • Electronegativity is the property that describes an atom’s attraction for a shared pair of e-. • If two atoms with different electronegativity values share e-, i.e. form a covalent bond, one of the atoms will have a “larger share” of the e-. • This produces a molecule with differently charged en ...
... • Electronegativity is the property that describes an atom’s attraction for a shared pair of e-. • If two atoms with different electronegativity values share e-, i.e. form a covalent bond, one of the atoms will have a “larger share” of the e-. • This produces a molecule with differently charged en ...
Chapter 3 Review - Nutley Public Schools
... D. Atoms are found in living things, but molecules are found in nonliving things. 7. The two elements found in every organic ...
... D. Atoms are found in living things, but molecules are found in nonliving things. 7. The two elements found in every organic ...
The History of Life
... Life in the oceans continued to evolve at the end of the Cambrian period. ...
... Life in the oceans continued to evolve at the end of the Cambrian period. ...
The Necessities of Life
... Food • Food gives organisms energy and the raw materials needed to perform life processes. • Organisms use nutrients to replace cells and to build body parts. • Producers – Make their own food. Plants use energy from the sun to make food from water and carbon dioxide. • Consumers – Gets its energy ...
... Food • Food gives organisms energy and the raw materials needed to perform life processes. • Organisms use nutrients to replace cells and to build body parts. • Producers – Make their own food. Plants use energy from the sun to make food from water and carbon dioxide. • Consumers – Gets its energy ...
4 Types Biological Molecules in plants and animals
... catalysts for chemical reactions in living things. Thousands of chemical reactions are going on in your body EACH SECOND. Sugar does not turn into water and carbon dioxide by itself. Outside the body, this reaction would need a flame. How does the body do this at a lower temperature? Enzymes allow y ...
... catalysts for chemical reactions in living things. Thousands of chemical reactions are going on in your body EACH SECOND. Sugar does not turn into water and carbon dioxide by itself. Outside the body, this reaction would need a flame. How does the body do this at a lower temperature? Enzymes allow y ...
Chapter 11
... Enzymes allow your body to initiate chemical reactions at low temperature and to control the rate of reactions. Catalyst – a chemical that allows a reaction to have a much lower activation energy than it normally would The body controls the rate of reactions by regulating the amount of enzymes produ ...
... Enzymes allow your body to initiate chemical reactions at low temperature and to control the rate of reactions. Catalyst – a chemical that allows a reaction to have a much lower activation energy than it normally would The body controls the rate of reactions by regulating the amount of enzymes produ ...
ppt - Castle High School
... • anything that has mass and takes up space • can you think of solids, liquids, and gases that might be found in the body? ...
... • anything that has mass and takes up space • can you think of solids, liquids, and gases that might be found in the body? ...
astro20 chap27 - Las Positas College
... – few days of exposure resulted in production of amino acids ...
... – few days of exposure resulted in production of amino acids ...
Origins of Life
... Paleozoic – explosion of multicellular diversity 543-248 million years ago Mesozoic – Dinosaur era, 248-65 million years ago Cenozoic – Era of Mammals, Flowering plants, Insects and Birds, 65 million years to present, including the evolution of man ...
... Paleozoic – explosion of multicellular diversity 543-248 million years ago Mesozoic – Dinosaur era, 248-65 million years ago Cenozoic – Era of Mammals, Flowering plants, Insects and Birds, 65 million years to present, including the evolution of man ...
ChemicalBondingPowerpoint
... How Old Is the Earth? • Meteorites formed 4.58 Ga, and the Moon formed 4.51 Ga. Earth must be about the same age, but no direct radiometric dating is possible because Earth was initially molten (Figure ...
... How Old Is the Earth? • Meteorites formed 4.58 Ga, and the Moon formed 4.51 Ga. Earth must be about the same age, but no direct radiometric dating is possible because Earth was initially molten (Figure ...
Chemical Basis of Life – Biochemistry - Har
... compounds that accelerate chemical reactions without themselves being permanently changed. If it releases energy it is exergonic. If more energy is required to begin the reaction than is released, it will absorb energy as a whole and is endergonic. ...
... compounds that accelerate chemical reactions without themselves being permanently changed. If it releases energy it is exergonic. If more energy is required to begin the reaction than is released, it will absorb energy as a whole and is endergonic. ...
Chemical Basis of Life Chapter 2
... • contain C, H, O---H:O ratio is 2:1 Ex: C6H12O6 C12H22O11 • provide immediate energy source • short-term energy storage • carbon is in short chains or RINGS • Monosaccharides (simple sugars) examples are: glucose, fructose, galactose, ribose, ...
... • contain C, H, O---H:O ratio is 2:1 Ex: C6H12O6 C12H22O11 • provide immediate energy source • short-term energy storage • carbon is in short chains or RINGS • Monosaccharides (simple sugars) examples are: glucose, fructose, galactose, ribose, ...
Abiogenesis
Abiogenesis (Brit.: /ˌeɪbaɪ.ɵˈdʒɛnɨsɪs/ AY-by-oh-JEN-ə-siss U.S. English pronunciation: /ˌeɪˌbaɪoʊˈdʒɛnᵻsɪs/), or biopoiesis, is the natural process of life arising from non-living matter, such as simple organic compounds. It is thought to have occurred on Earth between 3.8 and 4 billion years ago, and is studied through a combination of laboratory experiments and extrapolation from the genetic information of modern organisms in order to make reasonable conjectures about what pre-life chemical reactions may have given rise to a living system.The study of abiogenesis involves three main types of considerations: the geophysical, the chemical, and the biological, with more recent approaches attempting a synthesis of all three. Many approaches investigate how self-replicating molecules, or their components, came into existence. It is generally accepted that current life on Earth descended from an RNA world, although RNA-based life may not have been the first life to have existed. The Miller–Urey experiment and similar experiments demonstrated that most amino acids, basic chemicals of life, can be synthesized from inorganic compounds in conditions intended to be similar to early Earth. Several mechanisms have been investigated, including lightning and radiation. Other approaches (""metabolism first"" hypotheses) focus on understanding how catalysis in chemical systems in the early Earth might have provided the precursor molecules necessary for self-replication. Complex organic molecules have been found in the Solar System and in interstellar space, and these molecules may have provided starting material for the development of life on Earth.According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the Universe. It is speculated that the biochemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the age of the universe was only 10–17 million years.Nonetheless, Earth is the only place in the Universe known to harbor life. The age of the Earth is about 4.54 billion years. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in southwestern Greenland.