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Prebiotic Evolution

Prebiotic Evolution

Prebiotic Evolution. Chapter 18. Until about 300 years ago people believed in the idea of spontaneous generation –that life comes from non-living material. 1668 Francesco Redi proved that magots did not come from rotting meat. Could microorganisms arise spontaneously?

By boris
(272 views)

How Does Nature Recycle Nutrients?

How Does Nature Recycle Nutrients?

How Does Nature Recycle Nutrients?. What is the Nitrogen Cycle?. Facts: Nitrogen (N) is an essential constituent of protein, DNA, RNA, and chlorophyll. Nitrogen is the most abundant gas in the atmosphere (78%), but it must be fixed or converted into a usable form. . How is Nitrogen Fixed?.

By chipo
(447 views)

Food Chains and Food Webs

Food Chains and Food Webs

Food Chains and Food Webs. Autotrophs. Autotrophs are producers - Organisms that use energy from the sun to manufacture their own nutrients. Heterotrophs. Heterotrophs are consumers – Organisms that cannot manufacture their own food and must feed on other organisms.

By kalonice
(137 views)

Nanosensors

Nanosensors

Nanosensors. Vijay Rajesh Ammanamanchi. Outline. Introduction Possibilities Nanosensor Technology Applications Realities Conclusion. Introduction. Sensors operating on the scale of atoms and molecules Smaller size, lower weight, modest power requirements Data storage systems.

By eldora
(240 views)

Horse Digestive System

Horse Digestive System

Horse Digestive System. Melissa Moser Topic # 3186B Caledonia High School Equine Science. Digestive System. Where large complex molecules broken down into simpler molecules Long tube beginning with mouth and ending with the anus. Digestive Systems.

By nasnan
(237 views)

1B11 Foundations of Astronomy The Jovian Planets

1B11 Foundations of Astronomy The Jovian Planets

1B11 Foundations of Astronomy The Jovian Planets. Silvia Zane, Liz Puchnarewicz emp@mssl.ucl.ac.uk www.ucl.ac.uk/webct www.mssl.ucl.ac.uk/. 1B11 The Giant Planets. The 4 “giants”. + the icy object Pluto. Low densities  mostly H & He (ices for Uranus, Neptune) “Surfaces” : cloud tops

By elana
(118 views)

Chemistry of Carbon

Chemistry of Carbon

Chemistry of Carbon. Building Blocks of Life. Why study Carbon?. All of life is built on carbon Cells ~72% H 2 O ~25% carbon compounds _______________ _______________ _______________ _______________ ~3% salts Na, Cl, K…. Chemistry of Life.

By dore
(82 views)

NUTRITION

NUTRITION

NUTRITION. HETEROTROPHIC NUTRITION. HETEROTROPHIC NUTRITION. All animals including man & all non green plants depend on green plants for organic food .They are known as heterotrophs & their mode of nutrition is called heterotrophic nutrition .This involves following steps :. 1. INGESTION.

By coral
(406 views)

Kingdom Fungi

Kingdom Fungi

Kingdom Fungi . Unit 2 - Biodiversity. Kingdom Fungi. Eukaryotic Mostly Multicellular Yeasts are unicellular Heterotrophic by absorption Walls made of CHITIN Decomposers Live off dead or decaying matter Parasites Live off a living host. Structure of Fungi . Composed of hyphae

By amandla
(104 views)

Water and Organic Molecules in Protoplanetary Disks - High-R Spectroscopy -

Water and Organic Molecules in Protoplanetary Disks - High-R Spectroscopy -

TMT science & instrument workshop Oct. 16-17, 2013 @ Tokyo. Water and Organic Molecules in Protoplanetary Disks - High-R Spectroscopy -. Hideko Nomura (Tokyo Tech.) Matthew J. Richter (UC Davis). §1 Introduction. From protoplanetary disk to planets. Dust growth & settling.

By bella
(156 views)

Immunity

Immunity

Immunity. Tina Remes Walters 2011. Vocabulary . Pathogens Disease causing organism Antigens Complex molecules that are foreign to your body. Antibodies A protein made in response to a specific antigen. It attaches it and makes it useless.

By kirk
(110 views)

Basic Biochemical Processes of Living Organisms

Basic Biochemical Processes of Living Organisms

Basic Biochemical Processes of Living Organisms. Biochemical Processes. Biochemical processes are chemical processes that occur in living things.

By gaia
(143 views)

Nanosensors

Nanosensors

Nanosensors. Vijay Rajesh Ammanamanchi. Outline. Introduction Possibilities Nanosensor Technology Applications Realities Conclusion. Introduction. Sensors operating on the scale of atoms and molecules Smaller size, lower weight, modest power requirements Data storage systems.

By cheche
(333 views)

Molecular Geometry and Bonding Theories

Molecular Geometry and Bonding Theories

Molecular Geometry and Bonding Theories. 7.1 Molecular Geometry The VSEPR Model Electron-Domain Geometry and Molecular Geometry Deviation from Ideal Bond Angles Geometry of Molecules with More Than One Central Atom 7.2 Molecular Geometry and Polarity 7.3 Valence Bond Theory

By lawson
(317 views)

Golgi Body and Secretory Vesicles

Golgi Body and Secretory Vesicles

Golgi Body and Secretory Vesicles . By: Blake Davis Pd. 6. Sorry, Class I was late. Today’s lesson is about the Golgi Body and Secretory Vesicles. Where are They Both Located?.

By parry
(189 views)

CHAPTER - 6

CHAPTER - 6

CHAPTER - 6. SPECTRUM . The sequence of violet , indigo , blue , green , yellow , orange and red colour is called spectrum. DISPERSION. The phenomenon of splitting of white light into its constituent colours is known as DISPERSION. DEVIATION.

By anana
(101 views)

Immune Tolerance

Immune Tolerance

Immune Tolerance. Dr. Prakash Nagarkatti Associate Dean for Basic Science 733-3180 pnagark@uscmed.sc.edu. Self-nonself discrimination. Non-self or foreign. Self. No response. Strong response. Tolerance. Tolerance--->specific unresponsiveness triggered by previous exposure to Ag.

By gabe
(392 views)

The Origin and Early History of Life

The Origin and Early History of Life

The Origin and Early History of Life. Lecture #4. Early History of Life. Time Frame. 10-20 billion years ago (BYA) – big bang 4.6 BYA – earth formed 3.5 BYA – life appeared (prokaryotes-bacteria) 2.5 BYA – oxygen-producing bacteria (cyanobacteria) 1.7 BYA – oxygen-breathing organisms

By kelii
(96 views)

Digestive system chapter 38-1 pg. 971-977

Digestive system chapter 38-1 pg. 971-977

Digestive system chapter 38-1 pg. 971-977. Organization: how does our body get nutrients?. What nutrients do our bodies need?. Carbohydrates – energy Lipids – energy, cell membranes, insulation/ protection Proteins – Many different functions!. What else do our bodies need?.

By jeneil
(73 views)

Basic Biochemical Processes of Living Organisms

Basic Biochemical Processes of Living Organisms

Basic Biochemical Processes of Living Organisms. Biochemical Processes. Biochemical processes are chemical processes that occur in living things.

By helen
(133 views)

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