1.1 water UEC Senior 1 Biology 独中高一生物
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3. Genetic information is not a use of water in the human body. The other options listed are valid functions of water.
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This document provides an introduction to biochemistry. It defines biochemistry as the study of chemicals that sustain life, including biomolecules like proteins, carbohydrates, lipids, and nucleic acids. The three main areas of biochemistry are structural chemistry, metabolism, and molecular genetics. Water is the most abundant biomolecule in living things and has many unique properties important for life, such as being a universal solvent and maintaining homeostasis. Other important biomolecules include metabolites and macromolecules that perform essential functions and control biological processes. Buffers help regulate the pH inside cells and organisms.
conceptual and GK Q&A on biological moleules.pptx
The document discusses important biological molecules and concepts in biochemistry. It begins by defining biochemistry and describing the four fundamental kinds of biological molecules: carbohydrates, proteins, lipids, and nucleic acids. It then addresses questions about the polarity of water, why water is a universal solvent, the importance of hydrogen bonding, how water can absorb large amounts of heat with little temperature change, and how this protects living things. It concludes by discussing how the high heat of vaporization of water allows animals to efficiently release excess body heat.
Molecules of life
The document provides an overview of important biological molecules including carbohydrates, lipids, proteins, and nucleic acids. It discusses the composition and functions of these macromolecules. Carbohydrates include sugars, starches, and fibers that serve as energy sources. Lipids such as fats and oils provide energy storage and insulation. Proteins are made of amino acids and perform structural and functional roles in the body. Nucleic acids like DNA and RNA carry genetic information and aid cellular functions. The document emphasizes the significance of these molecules for life.
Physicochemical properties of water
This document provides an overview of the chemical properties of water. It begins by defining water as H2O, with two hydrogen atoms bonded to one oxygen atom. It then discusses several key points about water: it acts as an important solvent in biological processes; it is a key reactant in many reactions; it is oxidized in photosynthesis; and makes up 70% or more of living organisms. The document also covers the structure of the water molecule, its physical properties including being colorless/tasteless and having a high heat of vaporization, and its chemical properties such as being amphoteric and a universal solvent.
BIOLOGY FORM 4 CHAPTER 2 PART 2 - CELL ORGANIZATION
Unicellular organisms like amoebas are able to perform all living processes through specialized structures within their single cell. An amoeba feeds through phagocytosis, moves using pseudopods, exchanges gases through diffusion, regulates water and maintains homeostasis using a contractile vacuole, and reproduces through binary fission. Multicellular organisms have many cell types that work together through specialization and organization into tissues, organs and systems to carry out complex life functions.
Share Hmb 100 medical biochem lect. 2-1.pptx
This document provides an overview of biomolecules and biochemical reactions in living cells. It discusses that there are four main classes of biomolecules - carbohydrates, lipids, proteins, and nucleic acids. These biomolecules are made up of smaller building blocks like amino acids, fatty acids, and sugars. Biomolecules come together to form larger macromolecules through processes like dehydration synthesis. Biochemical reactions in cells include catabolic reactions that break down molecules to release energy and anabolic reactions that use energy to synthesize biomolecules. These reactions are catalyzed by enzymes and allow cells to maintain order through processes such as transport, movement, and waste removal.
Biology M2 Nutrition
This document summarizes key aspects of nutrition, including the six main nutrients, photosynthesis, digestion, and the role of enzymes. It discusses how plants produce nutrients through photosynthesis using sunlight, carbon dioxide, and water. It then describes the human digestive system and how nutrients are broken down and absorbed, starting in the mouth and progressing through the stomach, small intestine, and large intestine. Undigested waste is then egested from the body.
Properties of Water Presentation
Water is made of two hydrogen atoms and one oxygen atom in a polar covalent bond. This polarity allows water molecules to form hydrogen bonds with up to four neighboring molecules. These hydrogen bonds give water its unique properties including high surface tension, heat capacity, and ability to moderate temperatures. Water's properties like cohesion, density maximum at 4°C, and solvent abilities support life by transporting nutrients in plants, stabilizing ecosystems, and allowing biochemical reactions to occur.
Macromolecules notes basic with vocab
This document provides information about macromolecules including their subunits, elements, examples, and functions. It defines key terms like monomer and polymer and describes important chemical reactions like dehydration synthesis and hydrolysis. Details are given for the four main types of macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Their biological importance and dietary sources are outlined. Emergent properties in biology are discussed, where new levels of organization give rise to unique properties not present in the individual parts.
Water and life substances
The document discusses the importance of water and its properties. Water is a polar molecule with unequal charge distribution, allowing it to dissolve many ionic and polar compounds. Water molecules are also attracted to each other through hydrogen bonding. This property allows water to absorb large amounts of heat, maintaining stable conditions for organisms. The document also summarizes the key biomolecules that make up living things: carbohydrates, proteins, lipids, and nucleic acids. It describes the basic monomers, polymers, and functions of each biomolecule.
Earth and Life Science "Introduction to life"
This document discusses the key characteristics of life. It identifies seven characteristics shared by all living things: 1) cellular organization, 2) reproduction, 3) metabolism, 4) homeostasis, 5) heredity, 6) responsiveness, and 7) growth and development. Each characteristic is then further explained, with cellular organization distinguishing unicellular from multicellular organisms, and reproduction defined as asexual or sexual. The document also provides examples to illustrate metabolism, homeostasis, heredity, and responsiveness.
PHOTOSYNTHESIS.pptx
Photosynthesis involves three stages: capturing energy from sunlight, making ATP, and building carbohydrates. The goal is to use carbon dioxide and sunlight to produce carbohydrates that store energy.
Plants reproduce sexually through pollination and asexually through runners, buds, and other vegetative structures. Animals also reproduce sexually and asexually through various methods like budding, fragmentation, and regeneration depending on the species.
The evolution of living things over time is evidenced by fossils, homologous and analogous structures, and vestigial structures while factors like environment and extinction events have contributed to changes in organisms.
Nutrition 161116003517
The document summarizes key aspects of nutrition, including the six main nutrients, how plants obtain nutrients through photosynthesis, and the human digestive system. It explains that carbohydrates, proteins, lipids, vitamins, minerals, and water make up the six nutrients. Photosynthesis allows plants to produce nutrients from sunlight, carbon dioxide, and water. The human digestive system breaks down food through mechanical and chemical processes in the mouth, stomach, and small and large intestines to absorb nutrients.
Nutrition 161116003517
The document summarizes key aspects of nutrition, including the six main nutrients, how plants obtain nutrients through photosynthesis, and the human digestive system. It explains that carbohydrates, proteins, lipids, vitamins, minerals, and water make up the six nutrients. Photosynthesis allows plants to produce nutrients from sunlight, carbon dioxide, and water. The human digestive system breaks down food through mechanical and chemical processes in the mouth, stomach, and small and large intestines to absorb nutrients.
Similar to 1.1 water UEC Senior 1 Biology 独中高一生物 (20)
BIOLOGY FORM 4 CHAPTER 2 PART 2 - CELL ORGANIZATION
BIOLOGY FORM 4 CHAPTER 2 PART 2 - CELL ORGANIZATION
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统考生物 Chapter 20 Ecosystem
This document provides an overview of key concepts in ecology, including important terms like habitat, species, population, community, ecosystem, niche, biome, and biosphere. It discusses abiotic factors like temperature, sunlight, rainfall, and humidity and how they influence organisms and ecosystems. It also covers biotic factors and interactions between species, including competition, predation, symbiosis (commensalism, mutualism, parasitism). The document discusses how organisms adapt to environmental changes and provides examples of structural, behavioral, and physiological adaptations.
高中统考 Chapter 18 Growth and Development
This document provides an overview of plant growth and development. It discusses growth curves and how they are used to measure growth over time. The sigmoid growth curve is described, including the lag, log, stationary, and decline phases. Primary and secondary growth in plants is explained, focusing on the role of meristematic tissue and how it allows continuous and lateral growth. The functions of major plant hormones - auxins, gibberellins, and cytokinins - are summarized, including their effects on processes like stem elongation, flowering, and tissue culture.
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DNA polymerase synthesizes the new DNA strand in the 5' to 3' direction.
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EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
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1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
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the last few Gyr, consistent with the body of work surrounding the VRM.
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Masking and demasking reagents
Estimation of Magnisium sulphate
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2.Back Titration
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在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(salfor毕业证书)索尔福德大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
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留信网认证的作用:
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6:个人职称评审加20分
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Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
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InIndia-post-harvestlosses-unscientificstorage,insects,rodents,micro-organismsetc.,accountforabout10percentoftotalfoodgrains
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Ozturkcan, S., Berndt, A., & Angelakis, A. (2024). Mending clothing to support sustainable fashion. Presented at the 31st Annual Conference by the Consortium for International Marketing Research (CIMaR), 10-13 Jun 2024, University of Gävle, Sweden.
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The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
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light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
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Recently uploaded (20)
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
The cost of acquiring information by natural selection
The cost of acquiring information by natural selection
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Basics of crystallography, crystal systems, classes and different forms
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The debris of the ‘last major merger’ is dynamically young
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20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx
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THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
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aziz sancar nobel prize winner: from mardin to nobel
aziz sancar nobel prize winner: from mardin to nobel
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
1.1 water UEC Senior 1 Biology 独中高一生物
- 1. Lycopodium sp. root cross section Volvox sp. coloniesWhite blood cells engulfing bacteria Plant cells Phloem Xylem
- 2. Chapter 1 Chemical composition of cells
- 3. Learning objectives: • Cell as the most basic unit of life. • Functions of water. • Functions of inorganic salt.
- 4. Cells • The most basic functional and organizational level of life. • Some organisms are composed of only one cell, i.e. the unicellular organisms. • Unicellular organisms work together and form colonies. Slime molds aggregate and form fruiting bodies when food is scare.
- 5. • Multicellular organisms have various levels of organization within them. • Individual cells may perform specific functions and also work together for the good of the entire organism.
- 6. Chemical composition of cell • 有机 Organic substances • Compound with one or more carbon atom(s) covalent bond to other elements • 无机 Inorganic substances • Does not contain carbon
- 7. Some strong chemicals bonds Covalent bond 共价键 sharing of electron pairs between atoms Hydrogen bonds 氢键 electrostatic attraction between two polar groups, always involve hydrogen Ionic bond 离子键 complete transfer of valence electron(s) between atoms, generates ions
- 8. 1.1 Water
- 9. Function of water • Water is the main component of cells. • Function of water includes: • Metabolism substrates • Solvent • Location of chemical reaction • Medium of transportation • Support and maintenance of shapes • Secretions • Heat regulation • Reproduction
- 10. 1. Metabolism substrates 代谢作用物 • E.g. photosynthesis, hydrolysis (digestion etc.) Function of water Reactants Products photosythesis Hydrolysis of maltose into two glucose molecules maltose 2 glucoses
- 11. Function of water 2. Solvent 溶剂 • Many compound are soluble in water • Suitable for internal transportation of substances • E.g. blood, tissue fluid, lymph fluid, cytoplasm, sap in xylem or phloem
- 12. Function of water 3. Location of chemical reactions • Water as a buffer for temperature change. • Water has the highest specific heat capacity 比热 of any liquid. • Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius. • For water, this amount is one calorie, or 4.184 Joules. • Reaction can be carried out at a constant rate in temperature
- 13. 4. Medium of transportation • Many molecules and elements are soluble in water • Easier to transport water with as a solution • E.g. sap (plants), body fluids (blood, lymph) • Transport nutrients, oxygen, waste products etc. Function of water
- 14. 5. Support and maintenance of shape • Animal cells required water to maintain its shape and functions. • Plants cells rely on turgidity 膨胀度 to maintain rigidity 刚性. • Some animals such as jellyfishs rely heavily on water to maintains its shape as they may contain up to 97% of water in their body. Function of water 低渗溶液 等渗溶液 高渗溶液
- 15. 6. Others • Secretions of body e.g. digestion fluid, hormone, tear, saliva, semen etc. • Temperature regulation through sweating, urination (animal) or transpiration (plant) • Transfer of genetic material during reproduction • Surface water (gametophyte of plants such as in ferns) • Body fluids (animal) Function of water Fern gametophyte Sperm cell of Drosophila
- 16. Quiz • Which of the following is NOT a use of water in the human body? 1. Transport 2. Temperature regulation 3. Genetic information 4. Chemical reactions
Editor's Notes
- A hypotonic solution is any solution that has a lower osmotic pressure than another solution. In the biological fields, this generally refers to a solution that has less solute and more water than another solution.