Gateway - Biology
Interactive sites to help students practice skills needed for the Biology Gateway exam
Page last edited 3/16/2009
Cells | Interactions | Photosynthesis and Respiration
Genetics and Biotechnology | Diversity | Biological Evolution
Tennessee Item Sampler | Tennessee Practice Test Indiana Item Sampler
Released tests - Texas Assessment of Academic Skills [ EOC Biology ] (TAAS) Spring 2002 | Spring 2001 | Spring 2000
Virginia SOL 2000 | 2001 | 2002 | 2003 | 2004 | 2005
a site for teachers | a PowerPoint show | Adobe Acrobat document | a Word document
sound | video format | interactive lesson | a quiz | lesson plan | to print
Identify major cell organelles, given a diagram.
Distinguish between plant and animal cells given diagrams.
- 3D Cells - Learn about cell structure and function by viewing QuickTime movies and interacting with 3D worlds.
- An index of cell structure animations
- Animal Cell Anatomy - a good clean drawing from Enchanted Learning
- Animal Cells or Plant Cells - Bacteria Cells - Roll your cursor over parts of a cell drawing to see the name, or follow a link for more information
- Animal and Plant Cells -
- Clickable Eukaryotic Animal Cell - To identify each of the structures or organelles within these cells, click on the blue terms.
- Cell Biology A Virtual Tour
- Cell Structure - This site is part of a New York review site for their Regents exam.
- Index of Cell Resources at Enchanted Learning - plants, animals, and bacteria ( Caution : Some resources are only for members )
- Make a Model of a Cell - The purpose of this lab is to make a 3D model of a cell in order to better understand the parts and workings of a cell.
- Organelle Quiz - Correct each error by clicking on the incorrect word or phrase. Correct picks will result in the insertion of the correct word or phrase above the error.
Predict the movement of water molecules across the cell membrane Sequence a series of diagrams depicting the movement of chromosomes during mitosis.
- An index of Mitosis/Meiosis animations
- The Cell Cycle & Mitosis Tutorial - Interphase and Mitosis diagrams with a link to a mitosis movie at the bottom of the page.
- Cell Cycle Quiz - Correct each error by clicking on the incorrect word or phrase. Correct picks will result in the insertion of the correct word or phrase above the error.
- Learn the steps in mitosis with a set of excellent images.
- Learn the steps in mitosis with an interactive Java tutorial
- Interactive Mitosis Tutorial - requires Shockwave
- Animal Cell Mitosis - This animation demonstrates the stages of mitosis in an animal cell.
- Mitosis animation - a follow up quiz is included
- How Cells Divide - a great interactive site from Nova
- Mitosis & Meiosis from the Lab Bench at Prentice Hall
Demonstrate appropriate use and care of compound light microscopes
- The Compound Light Microscope
- How To Use A Microscope Properly ! Tricks of the trade that were designed to make your life easier!
- Micro*scope - a microscopic image database that contains over 6,500 images and over 3,000 descriptions
- Microscope use and proper care from a science lab procedure tutorial
Prepare wet mount slides Model or observe the movement of chromosomes during meiosis Create a time line that traces the development of microscopes
- Nobel E-Museum presents a microscope timeline
- Antique microscopes
- The History of the Microscope
- Benjamin Martin, an Eighteenth Century English instrument maker , is considered one the greatest designers and manufacturers of microscopes of his time.
- A short history of the microscope
Level 2 Distinguish proteins, carbohydrates, lipids, and nucleic acids, given structural diagrams
- Chemistry of Life - a University of Arizona web site
Identify a positive test for carbohydrates and lipids when given an experimental procedure, data, and results
- Carbohydrates, lipids and proteins and how to test for the presence of these organic molecules
Distinguish between active and passive transport, given examples of different molecules Determine the number of chromosomes following mitosis or meiosis, given the number of chromosomes in the original cell
- E-LAB-Mitosis and Meiosis
- A diagram comparing and contrasting mitosis and meiosis
- Mitosis and Meiosis - from the Lab Bench at Prentice Hall - several chapters, each with excellent animations
Recognize the significance of homeostasis to the viability of humans and other organisms, given the definition of homeostasis Calculate the ratio of cell surface area to cell volume
Identify commensalism, parasitism, and mutualism, given a scenario with examples.
Classify organisms as producers, consumers, or decomposers, given their behaviors and environment. Describe the niche and habitat of an organism in an ecosystem.
Level 2 Determine the effects of human activities on ecosystems Level 3 Investigate factors that influence Hardy-Weinberg equilibrium
- The Hardy-Weinberg Equation - If you know the frequency of an allele that causes a trait you can use an equation to make predictions - use this interactive lab to explore the Hardy-Weinberg Equation
- Hardy-Weinberg Equilibrium Model
- Java applets illustrating gene dropping - There are two applets, each contain the same ten pedigrees.
- Population and Evolutionary Genetics - The Hardy-Weinberg Law
- Understanding a Gene Pool - You will make a model gene pool based on an initial assumed population, collect data to test the Hardy-Weinberg principle, compare your data to predictions in a cross-multiplication table, and use a model gene pool to examine the change in allele frequencies caused by harmful genotypes in a given environment.
Photosynthesis and the Web: 2008 - This review presents relevant information on photosynthesis-related web sites Level 1
Identify the reactants and products of photosynthesis and respiration, given the equations
- An index of cellular respiration animations
- The Energy Relationships in Cellular Respiration and Photosynthesis : the Balance Sheet
- Photosynthesis - a large document with lots of good illustrations
- Photosynthesis Study Guide - No answers, but good review questions to test your knowledge.
Identify the cell organelle in which photosynthesis occurs, given a diagram of a plant Interpret a diagram of the oxygen-carbon dioxide cycle, given a diagram Identify and explore the chloroplasts in a leaf such as Elodea Model or illustrate the paths of water, oxygen, nitrogen, and carbon dioxide through a plant
- Transpiration - transfer of water from plants to the atmosphere
Level 2 Distinguish between aerobic and anaerobic respiration in terms of the presence or absence of oxygen and ATP produced Relate the interdependence of the processes of photosynthesis and respiration to living organisms, given a diagram or a description Construct charts comparing reactants, products, and energy transfer in photosynthesis and respiration
- Photosynthesis and cellular respiration - this site includes many excellent images
- Photosynthesis, the beginning of energy's flow through life
Sequence the major events of cellular respiration and anaerobic respiration Level 3 Compare the efficiency of aerobic and anaerobic respiration Produce concept maps of the major events occurring in the light dependent and light independent reactions Recognize the transfer of energy from respiration to cellular work, given an equation or diagram of the ATP cycle
Level 1 Distinguish between asexual and sexual methods of reproduction Identify the dominant trait, given the results of a monohybrid cross Determine the genotype and phenotype of a monohybrid cross, given a Punnet square
- Model For A Monohybrid Cross Exhibiting Simple Dominance
- Dragon Genetics . This activity explores the relationship between genotype and phenotype, using both sex-linked and autosomal dominant and recessive traits. By manipulating alleles (genotype), you create corresponding changes in the dragon's physical appearance (phenotype).
- Greenomes - laboratory and bioinformatics exercises to introduce students to modern plant genetics
- Mendel's Peas Web Lab - The Princess and the Wrinkled Peas.
Construct a model of DNA
- Computer Model of the DNA Helix
- The Nucleic Acids
- Extract Your Own DNA - You can see your own DNA with the unaided eye. Using this simple PowerPoint, your students will learn how to extract and view their own DNA. (easy-to-follow instructions for a great, hands-on learning experience)
- How to make a model of DNA - This model can be tough to make, but well worth the effort. You'll learn some great science along the way too!
- An index of DNA replication animations
- Make a Candy Model of DNA - (learn how the nucleotides are formed, and how it all fits together) This model can be used to show replication, splicing, and other functions involving the DNA double helix.
Distinguish between dominant and recessive traits given the results of a monohybrid cross
- Dominant and Recessive Traits - a worksheet
Level 2 Recognize the two major functions of DNA - replication and protein synthesis
- An index of protein synthesis animations
- DNA from the Beginning – This site is organized around key concepts. The science behind each concept is explained by: animation, image gallery, video interviews, problem, biographies, and links.
- DNA Replicating Itself - from the Graphics Gallery
- DNA Replication - the short story - using a zipper as an example
- DNA Workshop - The activity in this section places you within the cell, involving you with the processes of DNA replication and protein synthesis.
- DNA Replication - a good animation
Identify the sex chromosomes in humans and recognize inheritance patterns that are sex-linked
- Sex-Linked Inheritance Problem Set - The following problems have multiple choice answers. Correct answers are reinforced with a brief explanation. Incorrect answers are linked to tutorials to help solve the problem.
- Inheritance patterns of mongenic disorders
- Your Genes, Your Health - a multimedia guide to genetic disorders
Analyze modes of inheritance including co-dominance, incomplete dominance, polygenic, and multiple alleles Describe and analyze DNA fingerprinting using an illustration of DNA bands Model the processes of replication, transcription, and translation
- DNA Replication - DNA makes DNA
- Gene Expression: Transcription
- Gene Translation: RNA -> Protein
- Java applets illustrating gene dropping - There are two applets, each contain the same ten pedigrees.
- Molecular Biology - from the Lab Bench at Prentice Hall - several chapters, each with excellent animations, plus a quiz.
Construct a dihybrid cross and predict genotypic and phenotypic ratios
- Dihybrid Cross Problem Set
- Dihybrid Cross Problem 2 - When does a phenotype ratio of 9:3:3:1 occur?
- Genetics Practice Problems - includes monohybrid cross, testcross, incomplete dominance, dihybrid cross, multiple alleles and codominance, trihybrid cross, sex-linked genes, sex-influenced traits, epistasis
- Interactive dihybrid cross - two characteristics (seed color and seed texture) are considered.
- Punnett Square examples - for Monohybrid and Dihybrid crosses
Level 3 Manipulate a model of DNA to show different types of mutation Analyze/construct a karyotype and identify abnormalities for chromosome number, deletions, and translocations
Level 1 Infer animals or plants indigenous to an environment, given pictures or diagrams of the organisms and a description of the environment
- Introduction to Biomes - provides a listing of the food web in each biome
Infer the biome in which an animal or plant lives, given a description of the organism and pictures of various biomes Infer the relatedness of different organisms using the Linnean system of classification, given pictures of a variety of different plants or animals and a key to classification of organisms Develop a rationale for a system of classification, given a group of objects to classify
- Animal and Plant Classification - [ this link opens on a new page ]
- Classification of Plants & Animals from the Franklin Institute Online
- Classifying Critters - a series of classification challenges
- Classifying Critters - a short page of information with fifteen links to other sites with lots of information about "critters"
Predict the types of plants and animals indigenous to a biome by determining the characteristics of the biome Level 2 Determine the genus and species of an organism, given a dichotomous key containing descriptions of the characteristic of each classification level Determine whether an insect undergoes complete or incomplete metamorphosis, given pictures or diagrams of the insect in its stages of development Infer the body symmetry of an organism, given a diagram or picture of the organism Model body plans with asymmetry, radial, and bilateral symmetry Classify a group of organisms given a dichotomous key with characteristics of the organisms Level 3 Compare and contrast life cycles of various organisms to include alternation of generations
Level 1 A library of topics related to evolution is hosted by WGBH, a PBS station Differentiate between the relative age of various fossils in sedimentary rock, given a diagram of rock strata Predict how environmental changes will encourage or discourage the formation of a new species or extinction of an existing species
- Biological consequences of global warming : - article
- Climate Change Information Kit - Article by Intergovernmental Panel on Climate Change (IPCC) which engages hundreds of the world’s leading experts in reviewing the most up-to-date, peer-reviewed literature on the scientific and technical aspects of climate change
Compare and contrast the processes of fossil formation Level 2 Compare homologous structures in species to determine the relatedness of certain species
- Evolution - evidence from living organisms
- Fingerprinting: a Lesson on Classification - comparing charactristics to develop a system of classification
- The "Nuts and Bolts" of Taxonomy and Classification - This exercise illustrates the creativity involved in taxonomy and the roles form and function, ancestral traits and derived characters play in generating classification schemes.
Differentiate between natural selection and selective breeding
- Make it a Habitat - consider the adaptation of life forms through natural selection
Calculate the approximate age of a fossil, given the amount of Carbon 14 atoms found in the fossil and the half-life of C-14
- Carbon 14 Dating Calculator - Find the years that have elapsed from how much Carbon 14 remains or find the percent of Carbon 14 remaining after a given number of years.
- Use the % C-14 in a table to assign dates to events - A lesson which makes use of the C14 calculator above
- Radiometric Dating and the Geological Time Scale
- C 14 Quiz - Press the continue button to generate true or false statements about C 14 then answer a series of questions.
View embryos of different vertebrates to compare their early embryonic development to show relatedness
- Haeckel and the Vertebrate Archetype
- The embryonic development of all vertebrates shows remarkable similarities
- Which embryo is human? - DNA and the Developing Embryo
Predict the role of mutations in the survival of a population Level 3 Recognize the relatedness of species using DNA strands
- Destination: Galapagos Islands - Cyber Field Trip Student Activity - "DNA Adventure: The Web of Life"
Develop a time line that depicts change of organisms through time
- Hominid Species Timeline - A chronological chart which shows the main Hominid species (apes in blue, human species in red) and their approximate relationships in time
- Evolutionary and Geological Timelines
- Hominid species - the evolution timeline
- Human evolution timeline - move the slider forward and backward to move through time, or roll your cursor over a specimen to learn more about that species
- Evolution of the Universe - The incredible story of you ! (three timelines are available - choose by clicking on the timeline index)
- Evolution timeline from Time.com
- Origins of Humankind - from WGBH, a PBS station in Boston
- Human Evolution: The fossil evidence in 3D - UCSB online 3D gallery of modern primate relatives and fossil ancestors of humans. This gallery contains five modern primate crania, and five fossil crania. The crania can be rotated 360 degrees.
- A Pictorial History of Life on Earth
- Geologic Time Scale from Enchanted Learning