Eighth Grade Science Essential Knowledge 1. Matter – anything that
... Mass – a measure of how much matter an object is made of Space – the unlimited 3 dimensional realm in which all material objects and all events occur Law of Conservation of Mass – a law stating that atoms are not created nor destroyed in a chemical reaction Mixture – a combination of 2 or more subst ...
... Mass – a measure of how much matter an object is made of Space – the unlimited 3 dimensional realm in which all material objects and all events occur Law of Conservation of Mass – a law stating that atoms are not created nor destroyed in a chemical reaction Mixture – a combination of 2 or more subst ...
+ O2 (g)
... Organic vs. Inorganic In the18th century, compounds from living things were called organic; compounds from the nonliving environment were called inorganic. ...
... Organic vs. Inorganic In the18th century, compounds from living things were called organic; compounds from the nonliving environment were called inorganic. ...
Chemistry Enzymes, Vitamins, and Hormones
... reaction that breaks down protein chains. What is remarkable is that the enzyme splits protein chains only on a certain site of two amino acids; it ignores all other sites on the protein chain. How can enzymes work so fast, in so many applications, and with such precision? Researchers have proposed ...
... reaction that breaks down protein chains. What is remarkable is that the enzyme splits protein chains only on a certain site of two amino acids; it ignores all other sites on the protein chain. How can enzymes work so fast, in so many applications, and with such precision? Researchers have proposed ...
Chapter 2 - Molecules of Life (Biochemistry) Periodic Table of
... • Break larger molecule into smaller parts! ...
... • Break larger molecule into smaller parts! ...
File
... acid catalyst, such as H2SO4(aq), is used to increase the rate of this organic reaction, along with some careful heating. ...
... acid catalyst, such as H2SO4(aq), is used to increase the rate of this organic reaction, along with some careful heating. ...
Ch 8 Archean
... Monomer and Proteinoid Soup The origin-of-life experiments are interesting, but what is their relationship to early Earth? Monomers likely formed continuously and by the billions and accumulated in the early oceans into a “hot, dilute soup” (J.B.S. Haldane, British biochemist) The amino acids ...
... Monomer and Proteinoid Soup The origin-of-life experiments are interesting, but what is their relationship to early Earth? Monomers likely formed continuously and by the billions and accumulated in the early oceans into a “hot, dilute soup” (J.B.S. Haldane, British biochemist) The amino acids ...
Chapter 2 Basic Chemistry
... • Switch is made between molecule parts and different molecules are made • Ex.- Glucose 6 phosphate gives up a phosphate to ADP to make ATP ...
... • Switch is made between molecule parts and different molecules are made • Ex.- Glucose 6 phosphate gives up a phosphate to ADP to make ATP ...
Chapter 12 - Pathways to Biomolecules
... • Humans can make their own fat internally. • Though this is not usually necessary as fat is readily available in the food we eat. • Fat is a name used to describe a large number of organic compounds belonging to an even larger class of biological molecules called lipids. • Fats and oils are the bes ...
... • Humans can make their own fat internally. • Though this is not usually necessary as fat is readily available in the food we eat. • Fat is a name used to describe a large number of organic compounds belonging to an even larger class of biological molecules called lipids. • Fats and oils are the bes ...
CHAPTER 2: THE CHEMICAL BASIS OF LIFE
... Inorganic Substances are small compounds that do not contain the atoms C and H; Examples include oxygen, carbon dioxide (CO2) water, salts, acids & bases. ...
... Inorganic Substances are small compounds that do not contain the atoms C and H; Examples include oxygen, carbon dioxide (CO2) water, salts, acids & bases. ...
Medical Chemistry and Biochemistry Exam Questions 2008/09
... 78. Differences in synthesis of nucleic acids and proteins, and expression of genetic information in general, between eukaryotic and prokaryotic organisms. Mitochondrial genome and its expression. 79. Post-transcriptional RNA processing. Types of modifications and their significance. Mechanisms of s ...
... 78. Differences in synthesis of nucleic acids and proteins, and expression of genetic information in general, between eukaryotic and prokaryotic organisms. Mitochondrial genome and its expression. 79. Post-transcriptional RNA processing. Types of modifications and their significance. Mechanisms of s ...
Chapter 7
... In any chemical reaction, atoms are conserved… That is, the same number of atoms used in the reaction is the same number of atoms in the products. This is conservation of mass (or matter)…Matter is not created or destroyed, it just changes form. ...
... In any chemical reaction, atoms are conserved… That is, the same number of atoms used in the reaction is the same number of atoms in the products. This is conservation of mass (or matter)…Matter is not created or destroyed, it just changes form. ...
Direct Interactive Instruction Demonstration Lesson Information
... HS-ESS2-7. Construct an argument based on evidence about the simultaneous coevolution of Earth’s systems and life on Earth. Emphasis is on the dynamic causes, effects, and feedbacks between the biosphere and Earth’s other systems, whereby geoscience factors control the evolution of life, which in tu ...
... HS-ESS2-7. Construct an argument based on evidence about the simultaneous coevolution of Earth’s systems and life on Earth. Emphasis is on the dynamic causes, effects, and feedbacks between the biosphere and Earth’s other systems, whereby geoscience factors control the evolution of life, which in tu ...
Document
... several kinds of atoms, but some contain only two. Organic compounds that contain only carbon and hydrogen are called hydrocarbons. ...
... several kinds of atoms, but some contain only two. Organic compounds that contain only carbon and hydrogen are called hydrocarbons. ...
Ionic and Covalent Compounds
... several kinds of atoms, but some contain only two. Organic compounds that contain only carbon and hydrogen are called hydrocarbons. ...
... several kinds of atoms, but some contain only two. Organic compounds that contain only carbon and hydrogen are called hydrocarbons. ...
Dissociation of a Diatomic Gas
... Let us consider the following simple model for a diatomic gas: a diatomic molecule consists of a pair of point-like atoms, each of mass m, separated by a rigid rod of length a. The rigid rod corresponds to the chemical bond, which requires an energy to break. Now, at any finite temperature T , we ...
... Let us consider the following simple model for a diatomic gas: a diatomic molecule consists of a pair of point-like atoms, each of mass m, separated by a rigid rod of length a. The rigid rod corresponds to the chemical bond, which requires an energy to break. Now, at any finite temperature T , we ...
1.3.1 Function of Food
... (e.g. C6H12O6) are broken down to form smaller ones (e.g. CO2 and H2O) using enzymes e.g. Respiration – glucose molecules are broken down by enzymes to form carbon dioxide and water and energy is released. ...
... (e.g. C6H12O6) are broken down to form smaller ones (e.g. CO2 and H2O) using enzymes e.g. Respiration – glucose molecules are broken down by enzymes to form carbon dioxide and water and energy is released. ...
File - Science with Snyder
... ______ of these amino acids are made in the body; ______ must be consumed from foods such as nuts, beans, or meat. ○ As a source of energy, proteins have the same caloric value per gram as carbohydrates. 2. ______________ (sugars and starches) are molecules composed of carbon, hydrogen, and oxygen. ...
... ______ of these amino acids are made in the body; ______ must be consumed from foods such as nuts, beans, or meat. ○ As a source of energy, proteins have the same caloric value per gram as carbohydrates. 2. ______________ (sugars and starches) are molecules composed of carbon, hydrogen, and oxygen. ...
Scientific Process - THS Biology EOC Tutorials
... 16. Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function? F. Enzymes are specific to a substrate. G. ...
... 16. Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function? F. Enzymes are specific to a substrate. G. ...
Introduction to the Chemistry of Life
... Introduction to the Chemistry of Life This chapter introduces you to life at the biochemical and cellular level. It begins with a discussion of the chemical origins of life and its early evolution. This discussion continues into ideas and theories about the evolution of organisms, followed by a brie ...
... Introduction to the Chemistry of Life This chapter introduces you to life at the biochemical and cellular level. It begins with a discussion of the chemical origins of life and its early evolution. This discussion continues into ideas and theories about the evolution of organisms, followed by a brie ...
Teacher Notes for Food, Energy and Body Weight
... Discussion of this question can be used to emphasize the important point that energy can be converted to other forms of energy and the atoms in molecules can be arranged into other molecules, but energy can not be converted to matter or vice versa in biological processes (in accord with the First La ...
... Discussion of this question can be used to emphasize the important point that energy can be converted to other forms of energy and the atoms in molecules can be arranged into other molecules, but energy can not be converted to matter or vice versa in biological processes (in accord with the First La ...
What is Food Chemistry
... Lipids include fats, oils, waxes, and cholesterol. In the body, fat serves as a source of energy, a thermal insulator, and a cushion around organs; and it is an important component of the cell. Since fats have 2.25 times the energy content of carbohydrates and proteins, most people try to limit thei ...
... Lipids include fats, oils, waxes, and cholesterol. In the body, fat serves as a source of energy, a thermal insulator, and a cushion around organs; and it is an important component of the cell. Since fats have 2.25 times the energy content of carbohydrates and proteins, most people try to limit thei ...
chap1_SBI4U
... When an atom or group of atoms gains or loses electrons, it acquires an electric charge and becomes an ion When it loses electrons, the resulting ion is positive and is called a canion. When it gains electrons, the resulting ion is negative and is called an anion. Ions can be composed of onl ...
... When an atom or group of atoms gains or loses electrons, it acquires an electric charge and becomes an ion When it loses electrons, the resulting ion is positive and is called a canion. When it gains electrons, the resulting ion is negative and is called an anion. Ions can be composed of onl ...
THE PROBLEM OF THE “PREBIOTIC AND NEVER BORN PROTEINS”
... 1995) and amino acid activation by (Kumar and Yarus 2001). The structural basis for specific tRNA aminoacylation by a small ribozyme has be given by (Hong, et al. 2008). There is also at least one plausible prebiotic polymerization reaction that can produce peptides. It has been shown by (Leman, Org ...
... 1995) and amino acid activation by (Kumar and Yarus 2001). The structural basis for specific tRNA aminoacylation by a small ribozyme has be given by (Hong, et al. 2008). There is also at least one plausible prebiotic polymerization reaction that can produce peptides. It has been shown by (Leman, Org ...
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.