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Chemistry

APES Chapter 20

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Environmental Science
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APES Environmental Science

Chapter 20 WATER POLLUTION Multiple Choice Questions CORE CASE STUDY Lake Washington, near Seattle, was degraded by the growth of which of the following? coliform bacteria protozoans snails aquatic plants cyanobacteria Level: Moderate Answer: E The degradation of Lake Washington resulted from the introduction by sewage treatment plants of which of the following? phosphorus nitrogen oxygen chlorine fecal material Level: Moderate Answer: A When researchers studying Lake Washington got no action from treatment plant managers, they did which of the following? went on to something new went to the Washington State legislature for help went to the EPA for help educated the public wrote more scientific articles Level: Moderate Answer: D

Campbell chapter 8 test bank

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Biology
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biology test bank chapter 8

Chapter 8 test bank Chapter 8 An Introduction to Metabolism 1) Which term most precisely describes the cellular process of breaking down large molecules into smaller ones A) catalysis B) metabolism C) anabolism D) dehydration E) catabolism 2) Which of the following is (are) true for anabolic pathways A) They do not depend on enzymes. B) They are usually highly spontaneous chemical reactions. C) They consume energy to build up polymers from monomers. D) They release energy as they degrade polymers to monomers. 3) Which of the following is a statement of the first law of thermodynamics A) Energy cannot be created or destroyed. B) The entropy of the universe is decreasing. C) The entropy of the universe is constant.

Campbell chapter 7 test bank

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Biology
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#AP Biology #AP Bio #Biology #Study Guide

Self-Quiz Questions 1) In what way do the membranes of a eukaryotic cell vary A) Phospholipids are found only in certain membranes. B) Certain proteins are unique to each membrane. C) Only certain membranes of the cell are selectively permeable. D) Only certain membranes are constructed from amphipathic molecules. E) Some membranes have hydrophobic surfaces exposed to the cytoplasm, while others have hydrophilic surfaces facing the cytoplasm. Answer: B 2) According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly A) spread in a continuous layer over the inner and outer surfaces of the membrane. B) confined to the hydrophobic core of the membrane.

Robbert Goddard

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US History
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Polyatomic ion

The Unit 7 Test Review The test will consist of 25 multiple choice questions. Scantron answer documents will be used. You will need a #2 pencil and a calculator. A periodic table will be provided. In order to be successful with this test you need to know your diatomics and polyatomic ions. Be sure you can write formulas and balance ionic charges. Please study your notes, quizzes, and practice worksheets. Be sure to complete the WebAssign. Name a hydrate Write the formula for a hydrate Calculate the percent by mass of water in a hydrate using a given formula Calculate the percent by mass of water in a hydrate using lab data Determine the formula of a hydrate using lab data (similar to the hydrate lab) Differentiate between basic state of matter symbols: (s), (l), (g), (aq)

ap bio lab 4

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Biology
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bio lab 4

Katie Hallstead Mrs. Legary AP Biology p.0 January 15, 2013 Lab 4: Plant Pigment and Photosynthesis Abstract In this experiment, there are two activities that aim to find two different things. In the first one, paper chromatography is used to separate the pigments found in chlorophyll. The second activity consists of measuring the rate of photosynthesis by observing the change in color that happens when DPIP is reduced through a time interval. Problem How many pigments exist within plants, and at what rates do they photosynthesize when exposed to different lights? Hypothesis

Intro to Polymers Lab

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Chemistry
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Polymers

Sam Glasset and Dan Velez Oliver- Chemistry Honors Period 3 December 7, 2011 Lab Report: Introduction to Polymers Survey of the Man-Made Polymers: See attached chart Preparation of Polymers- See signed lab sheet Question: Draw Structural Formula for the following and name two specific uses of the polymer. Polyethylene (PE) Shampoo Bottles Bulletproof Vests Polyvinyl Chloride (PVC) Credit Cards Drainage and Portable Piping Polystyrene (PS) CD and DVD cases Disposable Cutlery Polypropylene (PP) Food Containers Fiber in carpeting Tetrafluoroethylene (Teflon) Teflon Cookware Nail Polish A. Addition Polymerization: A chemical reaction in which monomers are added to each other to form long-chain polymers without by-products. B. Tetrafluoroethylene is often made this way.

Basic Biochemistry

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AP Biology Biochemistry

Atomic Structures Atoms are basic units of matter Protons (+1) , Neutrons (0), Electrons (-1) Depending on their energy levels, they are in different states. Ground state: At lowest possible potential energy. Excited state: At any state where the system is at higher than the minimum. Isotopes: atoms of one element that vary in neutrons. Are all chemically identical Radioisotopes: decay at a rate known as half-life, often used in medicine. Tracers: used to TRACE certain chemicals in natural pathways Ex: Iodine (radioactive) to give information about thyroid gland metabolism. Bonding In biology, the two main types are Ionic and Covalent Ionic Bonds Transfer of electrons Receiver is called anion (a negative ion) Donor is called the cation Covalent Bonds

AP Chem Notes

Subject: 
Chemistry
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AP Chemistry
Notes

South Pasadena ? AP Chemistry Name ________________________________ Period ___ Date ___/___/___ 2 ? Atoms and Elements ATOMIC STRUCTURE? Parts of Atoms: Most people already know that the atom is made up of three main parts, the _______________ and ______________ in the nucleus and the ______________ somewhere outside of the nucleus. Let?s summarize: proton neutron electron symbol charge location mass size (see below) Let?s make this more visual using information from the Chart of Fundamental Particles. If the proton were 10 cm in diameter? the size of an orange, how big would everything be? object actual size model size model proton 10-15 m 10 cm orange neutron 10-15 m electron 10-18 m atom 10-10 m

Plants

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Biology
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plants

Chapter 1: Principles of Life Concept 1.1: Living Organisms Share Common Aspects of Structure, Function and Energy Flow Biology is the scientific study of living things All living things have a single common ancestor Life as we know it had a single origin All organisms: All organisms are composed of cells and organic material (amino acids, nucleic acids etc.) Contain genetic information for protein synthesis and reproduction Convert environmental molecules into biological molecules Use external energy for internal processes Maintain homeostasis Replicate DNA to prepare for reproduction Maintain similar genetic sequences in the fundamental set of genes Change their genetic information according to changes in environment (evolution)

Wiley Joeking

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Economics
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Chemistry: Matter & Properties Matter is anything that has _______________ and occupies ______________. Matter has (Area) (Volume) (Indefinite Structure) What are the 4 building blocks of matter? __________, _________, ___________, and _______________. What is NOT a building block of matter Odor Compounds Amino Acids Both A and C None Of the above The smallest unit of an element that maintains the properties of that element: _________________________ A pure substance made of only one kind of atom is an _________________ An element is made up of ___ kind(s) of atom(s) Which of the following DOESN?T describe a compound? It is a substance It is the smallest unit of an element that maintains the properties of that element Made from atoms Made of 2 or more elements

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