Welcome to the GHS Biology Tutor
Browse the sites below to find fun activities and useful information that can help increase your understanding of the topics we discuss in class.  The sites are organized by topic.

New links may be added throughout the year, so come back and visit this page again!  Please inform your teacher about any links that no longer work or new sites that you find helpful.

The Scientific Method and Science as a Process

Inductive and Deductive Reasoning

Major Themes in the Study of Life

Major Themes and biological inquiry (notes)

Characteristics of Life and the Basic Needs of All Organisms

Characteristics of Life I (& Origins)

Characteristics of Life II

Chemistry, Enzymes, and the Origin of Life

Properties of Biomolecules / Organic Molecules (BioCoach)

 Major elements in biological molecules and functional groups (BioCoach)

Origins of Life

The Cell and the Cell Cycle/Division

How small is really small? How big is a...? 

Parts of the cell:

Cell Structures (interactive animations)

Cells Alive!  (animations, diagrams and more...)

Cell Structure & Function (BioCoach activity)

Cell Quiz Game

Transport across cell membranes:

Osmosis (demonstrations of hypertonic, hypotonic & isotonic)

Membrane Structure and Transport

 

Cell Cycle (Interphase, Mitosis/Nuclear Division, Cytokinesis): Onion Root Tips (activity)

Mitosis (animation)    

Cells Alive! (mitosis interactive animation)

Cells Alive! (meiosis interactive animation)

Mitosis (BioCoach)

Meiosis and sexual reproduction:

Comparison of Mitosis and Meiosis (animation)

Meiosis (BioCoach)

Practice questions (tutorial and self-quizzes)

More on cell biology:

Endosymbiosis: the origin of eukaryotes

Molecular Expressions: Cell Biology and Microscopy

How Stuff Works: The Cell

Cancer & the Cell Cycle
Micro*Scope Images of microbes, classification schemes, descriptions of organisms, talks and other resources on the biodiversity of microbes.

Nikon's Small World Photomicrography

 Energy and Life: Cellular Respiration and Photosynthesis

Cell Respiration (BioCoach)

 The Electromagnetic Spectrum

Photosynthesis (BioCoach)

DNA Structure and Function

DNA Discovery Timeline

DNA Discovery: The Experiments and General Structure & Function

DNA Structure and Replication (BioCoach activity)

DNA Game

DNA Quiz

Protein Synthesis: From Genes to Proteins

Protein Synthesis (animation)

Transcription: DNA to mRNA (BioCoach)

Translation: mRNA to polypeptide/protein (BioCoach)

Gene Control in Prokaryotes: the lac operon example (BioCoach)

Genetics: The Scientific Study of Heredity

Mendel and an introduction to genetics (notes & diagrams)

Genetics Practice Problems:  Monohybrid Cross     Dihybrid Cross     Sex-linked     Sex-linked 2

Punnett Square (drag & drop activity and video)

Mendelian Inheritance (BioCoach)

Practice questions (multiple choice)

DNA fingerprinting project

Biotechnology and Genetic Engineering

 Cloning and more (check out "Click & Clone"!) Comprehensive (visit their home page) and fun!

Restriction Enzymes & Gel Electrophoresis (BioCoach)

Access Excellence Comprehensive site

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 Genetics Timeline and more

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 National Center for Biotechnology Info. For the truly adventuresome student.

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Evolution and the Classification of Living Things

Evolution:

Evolution PBS Comprehensive and fun!

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 Understanding Evolution Berkeley.  Great resources and readings.

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Stories from the Fossil Record

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The History of the Universe

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Evolution Timeline I

Evolution Timeline II

Evolution Timeline III

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Extinction Events (at Wikipedia)

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The Tree of Life provides information about the diversity of organisms on Earth, their evolutionary history (phylogeny), and characteristics. 

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Endosymbiosis: the origin of eukaryotes

Biodiversity & Classification:

The Tree of Life

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 The Shape of Life Evolution within the Animal Kingdom, including eight of the major phyla. Corresponds to the PBS video series.

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Major Animal Phyla  Wayne's Word On-line Textbook of Natural History

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Animal Diversity Web Browse the Animal Kingdom

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BioImages (United Kingdom) **Virtual Field Guide - a picture is worth a...well you know.

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 ARKive Images of Life on Earth

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Species Index Marine Biology  UVa Wise

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Connecticut Dept. of Environmental Protection Your local ecology
 

Bacteria and Viruses

Protists 

Endosymbiosis: the origin of eukaryotes

Fungi

Animals

Plants and Horticulture

Plant Structure and Growth (BioCoach)

Ecology

Connecticut Dept. of Environmental Protection Your local ecology

Human Biology

Cardiovascular System: 

The Beating Heart (BioCoach activity)

Blood Vessels (BioCoach activity)

Animal Behavior 

General Biology - Multiple Topics...

All Things Biology! Kimball's Online Biology Textbook
Honors Textbook: A Guide to the Natural World by David Krogh
BioCoach  review key concepts across many topic areas and take a self-quiz
High School Hub Biology Links
ActionBioscience resource for peer-reviewed articles and links to hot topics in biology
The Biology Project - U of Arizona
How Stuff Works: Life Science
AccessScience (Password Required, ask in the GHS Media Center)
Science Research Resources (Password Required, ask in the GHS Media Center)

Do you have a suggestion for this web site?  Have you identified a problem or a bad link?

Please email John_Vellardito@greenwich.k12.ct.us