Biology Tutorials - Biology

Biology Tutorials - Biology

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Tutorials on several important biology topics have been created for student use. Each tutorial contains a description of the biology topic, an animation and quiz to test your knowledge. Please contact Dr. Alexander Edens at [email protected] for more information.

  • Cellular Respiration
    The goal of this tutorial is to learn about cellular respiration, including Glycolysis, Krebs Cycle and the Electron Transport Chain.
  • Cell Cycle and Mitosis
    The goal of this tutorial is for you to learn the phases of of the cell cycle and mitosis and the important events that take place during each phase. Complete all three portions of this tutorial:
  • Cell Structure and Function
    The goal of this tutorial is for you to be able to describe cell theory, differences between prokaryotic and eukaryotic cells and understand cell structure and function.
  • Development
    The goal of this tutorial is to learn about the basics of early development from fertilization through gastrulation and major differences in early development between taxonomic groups.
  • Diffusion and Osmosis
    The goal of this tutorial is for you to be able to describe the movement of molecules in the processes of diffusion and osmosis.
  • DNA Replication
    The goal of this tutorial is for you to learn the process of DNA replication and the major players involved.
  • Eukaryotic Life Cycles
    The goal of this tutorial is for you to gain knowledge about the 3 major eukaryotic life cycles: gametic, zygotic and sporic.
  • Genetics
    The goal of this tutorial is for you to be able to identify important terms used in genetics, how to use a Punnett square to determine the outcome of a cross with 1 trait or 2 traits, and how to use the product rule to determine the outcome of a cross with any number of traits.
  • Meiosis
    The goal of this tutorial is for you to learn the stages of Meiosis and describe the important events that occur at each stage. Upon completion of this tutorial, you will also be able to compare and contrast mitosis and meiosis.
  • Microevolution
    The goal of this tutorial is to learn about the difference between macroevolution & microevolution, how Hardy-Weinberg equilibrium works as well as factors that can upset this equilibrium and how to use the equation, (p^2 + 2pq + q^2) = 1, to calculate allele frequencies in a population.
  • mRNA Splicing
    The goal of this tutorial is for you to learn the process of splicing and the major players involved in the splicing process.
  • Natural Selection
    The goal of this tutorial is for you to learn how natural selection provides a mechanism for evolution, natural selection results from selective pressures in the environment and is not random, there are also random processes like genetic drift that can upset genetic equilibrium and only natural selection results in adaptation.
  • Photosynthesis
    The goal of this tutorial is for you to gain knowledge of the light dependent and light independent (Calvin Cycle) reactions of photosynthesis.
  • Scientific Literature
    The goal of this tutorial is to learn about what peer-reviewed scientific literature is, the components of a peer-reviewed research paper and how to cite a research paper.
  • Scientific Method
    The goal of this tutorial is for you to learn about the scientific method and be able to apply that knowledge to problems.
  • Signal Transduction
    The goal of this tutorial is for you to gain an understanding of how cell signaling occurs in a cell. Upon completion of the tutorial, you will have a basic understanding signal transduction and the role of phosphorylation in signal transduction. You will also have detailed knowledge of the role of Tyrosine kinases and G protein-coupled receptors in cell signaling.
  • Taxonomy & Phylogeny
    The goal of this tutorial is to learn about the traditional classification scheme of Linnaeus; two theories of taxonomy: traditional evolutionary taxonomy and Cladistics; how to read a cladogram.
  • Tissues
    The goal of this tutorial is for you to be able to identify the four tissue types in the human body, describe their function and unique characteristics.
  • Transcription
    The goal of this tutorial is for you to learn the process of transcription, including the major players involved and the basics of RNA processing.
  • Translation
    The goal of this tutorial is for you to learn the process of translation.


Biology is taught using a mixture of lectures, skills training (including field courses), classes and tutorials. The lectures lay down the syllabus of each course, and the skills training provides techniques essential for any modern biologist. Our lectures are designed to tell you about the important issues, theories and empirical research in biology, while skills training gives you the tools you need to become a modern biologist. We also use small group teaching for experimental design and quantitative data analysis. Extra reading is encouraged, and this should increase as the course progresses.

Oxford University’s greatest asset is the tutorial system. This system means that you are likely to receive much more personal tuition and greater pastoral support than other universities can offer. The tutorial consists of a one hour meeting, once a week, between the tutor and two or three students. Before the tutorial, your tutor will set you an essay to write and provide you with a reading list. You hand in the essay before the tutorial, which is read and commented on by your tutor, and handed back at the start of the tutorial.

The discussion during the tutorial goes beyond the original topic, giving you a chance to talk about your own ideas and opinions in modern biology. Tutorials are often in blocks of two or more, so that you can cover a topic in depth, and your tutor can get to know you personally. He or she is asked to comment on your performance in tutorials, and these comments are sent to your college at the end of each term.

Biology Tutorials - Biology

Starr's Biology Today and Tomorrow

Learning biology through animations, tutorials and quizzes.

Biological Processes

View full color, dynamic animations to help you visualize key biological processes. You have the ability to control the animation by turning on or off the narration, playing the animation with or without text, and can start, stop, or rewind the animation to any point you choose.

Biology Tutorials

These 106 in-depth tutorials are designed to illustrate and explain some of the many complex topics in biology. Each tutorial has four elements: an introduction that describes the topic to be illustrated and puts it into a broader context, a detailed animation that clearly illustrates the topic (there are a few tutorials that include simulations or other types of content, rather than animations), a conclusion that summarizes what you should have learned from the animation, and a quiz on the topic covered. The clear presentation of complex topics make these tutorials a powerful learning tool, be sure to work through them in their entirety for the best benefit. New to the Seventh Edition are 20 Key Experiment tutorials that expand upon some of the most important experiments depicted in the book, as well as 10 additional new tutorials. All the animated activities include textbook references, making it easy for you to look up a topic in the text for further explanation. For details on how the tutorials work, click the Help button on the Animation tab of a tutorial.

Biology Animations

Life processes and cells, green plants, human as organisms, living things in their environment, variation and inheritance.

BioCourse Animation, Movie and PowerPoint

General Biology

Animating Biology

Carnegie Mellon's Office of Technology for Education and Department of Biological Sciences create multimedia materials for teaching and learning Biology. After an analysis of a number of Biology courses was performed to identify when and how shared concepts where taught, a team of biologists, media programmers, and learning experts came together to create animations designed to improve understanding of some of the main concepts taught in Modern Biology and Biochemistry.

Student Center for Biology (The McGraw-Hill Companies)

Welcome to the Student Center for Biology, Seventh Edition. One of the key features of the Student Center are the e-Learning Sessions. The e-Learning Sessions are multimedia enhanced overviews of the chapter concepts. Each chapter's e-Learning Session will contain links to a variety of interactive educational content to help you further expand your understanding of the core chapter concepts: animation, exploration, esp activity, art activity, case study, art review, art quizzes, chapter quiz and more.

Biodiversity (Rediscovering Biology)

Dilution Effect: As suburbs developed in New England, the forest habitat became more patchy, resulting in the disappearance of some species and the proliferation of mice -- which are the reservoir for the Lyme spirochete -- and ticks, which carry the disease to humans. This increased the proportion of infected ticks, and led to an increase in human disease. Mass Extinctions: A graph showing the five major recognized mass extinctions over the last 600 million years. Trilobites went extinct at the end of the Permian era, while dinosaurs were casualties of the most recent mass extinction at the Cretaceous/Tertiary period border. Species Richness vs. Lyme Disease: Ostfeld's study found that as species richness declined, the incidence of Lyme disease increased. Test Strip - Cedar Creek: Each year, David Tilman collects the plant matter from a strip 10 cm by 3 m from each of his experimental plots to examine the effects of species diversity on biomass. Tilman's Experimental Plots: Tilman compares plots with few species (on left) to those with more species (as on the right). He has found that more diverse plots recover from disturbances like drought more quickly than those with fewer species.

Biology Tutorials

Working on a research paper, or preparing for an exam. Our Biology Tutorials will set you up for success.

Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

Genetics – Lesson Outline & Worksheets

Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

Adaptation Tutorial

Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

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Branches of Natural Sciences

Natural science can be broadly divided into two main branches these are life scienceand physical science. Life science is also known as biology,which is the study of living things. Physical science has four subdivisions, which are:

  • Astronomy (the study of space)
  • Chemistry (the study of substances)
  • Earth sciences (the study of our planet)
  • Physics(the study of matter and energy).

What is Biology?

The word ‘biology’ comes from the Greek words ‘bios’ (meaning life) and ‘logos’ (meaning study). So biology (AKA life science) is the study of living things and what they do. Biology is a highly diverse subject with many different areas of study. These include morphology(the study of life structures), botany (the study of plants), zoology (the study of animals), genetics (the study of genes), microbiology (the study of microorganisms), and many, many more.

What is Astronomy?

Astronomy is the study of celestial objects and space in general basically, everything beyond Earth’s atmosphere. The word ‘astronomy’ is composed of two Greek words: ‘astron’ (meaning star) and ‘omos’ (meaning arranging). Astronomers study celestial bodies that can be seen from Earth (like the moon, the sun, the stars, and some planets), but also faraway galaxies that can only be observed using powerful telescopes. Astronomy also involves the study of phenomena such as black holes, and theories about dark matter and dark energy.

What is Chemistry?

Chemistry is the study of substances, or matter (i.e. all the ‘stuff’ that makes up the physical world). The purpose of chemistry is to understand the composition, structure, and properties of substances (defined as elements and compounds), and the changes they undergo when reacting with other substances. Chemistry also involves the study of how energy is released or absorbed during those reactions.

What is Earth Science?

Earth science (AKA geoscience) is the study of planet Earth and everything that goes on here. This includes the study of the solid Earth, its oceans, and its atmosphere, as well as the origin and evolution of the planet. There are four major branches of Earth science these are geology, meteorology, astronomy,and oceanography.

Geologyis the study of the origin, history, and structure of the geosphere,i.e. the solid Earth. This includes the study of different rock types, the movement of the Earth’s crust, volcanoes, and earthquakes, among other things. Meteorologyis the study of the Earth’s weather and climate, astronomyis the study of space, and oceanographyis the study of the oceans and their tides, composition, and ecosystems.

What is Physics?

Physics is thought to be one of the oldest academic disciplines on Earth and involves the study of matter, energy, forces, mass and charge. The word ‘physics’ comes from the Ancient Greek word ‘physis,’ meaning nature.Ultimately, physics seeks to make sense of the universe and the laws that govern it.

Physics can be broadly divided into two main branches. These are classical physics(involving theories that predate the 1900s) and modern physics(post-1900 physics that makes use of quantum mechanics and the theory of relativity).

Dev Tutorials are video recordings of developmental biologists describing key concepts in the field. These tutorials are primarily authored by Drs. Michael Barresi and Scott Gilbert who are the co-authors of the 11th Ed. of the textbook “Developmental Biology” by Sinauer Associates. These lessons are to complement the chapters within this text book and serve as a basic coverage of these key concepts.

Purpose: Teachers are encouraged to use these Dev Tutorials to supplement the text and provide an opportunity to offer a “Flipped Classroom” approach to teaching Dev Bio. Students watch these Dev Tutorials before coming to class then, while in class, teachers can incorporate more active learning approaches such as interactive case study problems that are also offered with the 11th Ed.


Stem Cell Basics
Mammalian Sex Determination
Cell Specification
Find It, Lose It, Move It
Differential Gene Expression
Legends of the Sperm and Egg
Morphogen Signaling
Neural Crest DevelopmentTwinning
Evo Devo Part One
Evo Devo Part Two
Developmental Symbiosis
Introduction to Limb Development

*These Dev Tutorials are the sole production of Smith College and will always be freely available to all from this website.


Transcript for Personhood

Transcript for Cell Specification

About Us

The Barresi Lab studies brain development in zebrafish.
Dr. Barresi is co-author of the textbook “Developmental Biology”

Contact the Barresi Lab:
Michael J.F. Barresi, [email protected]

Office ph. 413.585.3697
Lab ph. 413.585.3961

44 College Lane
Clark Science Center
Smith College, Northampton, MA 01063

Select Publications

Lab News

-Join Dr. Barresi and other Dev. Biologists on an open Zoom forum focused on teaching Developmental Biology. Email [email protected] for Zoom invite

-Teaching Dev Bio online during this pandemic? Catch Michael’s Webinar on how to accomplish this here!

-Congratulations to Mackenzie Litz for her acceptance into MIT’s Computational and Systems Biology PhD program!

-Congratulations to Elora Greiner for being awarded the 2020 Beckman Scholarship for research in the Barresi Lab!

-Congratulations to Mackenzie Litz for her Honorable Mention by the NSF on her Predoctoral Grant Proposal!!

-Congratulations to Morgan Schwartz (currently at CalTech) for her Honorable Mention by the NSF on her Predoctoral Grant Proposal!

-Congratulations to Jake Schnabl on the first publication of his first Barresi Lab Publication on ΔSCOPE!

-Congratulations to Dr. Barresi for completing the 12th Edition of Developmental Biology!

-Barresi Lab awarded a 4 yr ABR:RUI grant (600K) from the NSF to study zebrafish forebrain development.

GLYCOCONJUGATES Structure and Functions of Proteoglycans, Glycoproteins and Glycolipids What are Glycoconjugates? Polysaccharides and oligosaccharides act also as information carrier molecules. Informational carbohydrate is covalently joined to a protein or lipid to form glycoconjugates. As the name suggests, the glycoconjugates are conjugate (joined) molecules of [&hellip]

Online Biology Tutors Available Now

Keeping up in biology class is hard enough without the worksheets, chapter questions, and lab reports your teacher assigns as homework. When you factor that stuff in, bio can seem completely overwhelming&mdasheven for high school students or first-year undergrads.

Fortunately, our online biology tutors are available for homework help the minute you need it.

They're online 24/7 to help you with biology homework questions, science projects, or test prep. Best of all, you can get a tutor anytime you're stuck on something&mdashfrom home or on the go.

Biology help on demand

Every biology tutoring session happens in our online classroom, where you can chat with your tutor, share files, and draw on an interactive whiteboard. It doesn't matter if you need help after school, before school, or at three o'clock in the morning before your next biology test&mdashwe're here for you all day, every day.

Any biology problem, anytime

Our online tutors cover biology up to the introductory college level, including AP ® Biology, so they can help you with anything your bio teacher assigns. Here are just a few things you can get done faster and easier with help from an online biology tutor:

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  • It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its ‘miniature machines’ known as organelles. is the process of generating ATP by degrading sugar (glucose). ATP is essential to cell because it is the chief source of chemical energy that fuels many cellular activities. are capable of producing their own sugar (glucose) from inorganic sources and light. They do so through photosynthesis.
  • DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of a phosphate molecule, a deoxyribose, and a nitrogenous base. The nucleotide sequence in the DNA codes for a particular protein.
  • Proteins are synthesized inside the cell. Initially, mRNA transcript is generated. This is then brought to the ribosomes attached to the endoplasmic reticulum for translation. The newly synthesized protein undergoes post-translational modifications in the endoplasmic reticulum and in Golgi apparatus if the protein is to be transported outside the cell.
  • Viruses are deemed as obligate parasites as they require a host to become “alive”.
  • Organisms, such as animals and humans, have an immune system to combat antigens, especially those causing diseases. Plants may not have the same elaborate specialized cells to hunt down and kill antigens but they have their own strategies to defend themselves. They make use of hydrogen peroxide or chemicals, such as lignin, ethylene, galls, and tannins.

Biological Cell Introduction

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its ‘miniature machines’ known as organelles. Read this tutorial to become familiar with the different cell structures and their functions…

ATP & ADP – Biological Energy

ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structure as it consists of an adenosine molecule and three inorganic phosphates. Know more about ATP, especially how energy is released after its breaking down to ADP…

Cell Respiration

Cell respiration is the process of creating ATP. It is “respiration” because it utilizes oxygen. Know the different stages of cell respiration in this tutorial…

Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the help of sunlight- all of which are investigated in this tutorial…

DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxyribose, and a nitrogenous base. Know the fundamental structure of DNA and the process of DNA replication in this tutorial…

Protein Synthesis

Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcript that carries the code for protein synthesis. Read this tutorial for further details…

Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis and the ensuing post-translational steps. Read this tutorial for more info…

Protein Variety

The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleotides in the expressed DNA strand. For more info on the different types of proteins, read this tutorial…

Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms. They require other organisms to host themselves in order to survive and as such, they are regarded as obligate parasites. Learn more about viruses and cell assimilation in this tutorial…

Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pathogens. Read this tutorial to learn the first and second lines of defense that the human body employs. ..

Passive and Active Types of Immunity

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In this tutorial, learn about these lymphocytes and the mechanisms they employ to defend the body against the same antigens…

Plant Cell Defense

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting compounds, such as lignin, ethylene, galls, and tannins. Find out how these mechanisms protect the plants from pathogens…


Any technological application which makes use of biological systems or other kind of living organisms for the sake of making products and even modifying the processes is termed as biotechnology. There is widespread application of this field of science as one can find a plethora of new products and processes which are made every day.

In our video lectures, we are going to take a complete detour of this science. Our main focus is the biotech and the pharmaceutical industry however, we will also talk of structural aspects of biomaterials. We believe that in order to make the most of the video tutorials and hone the knowledge in this area, you need to be familiar with what the biomaterials are made of.

There are different analytical technologies which can be used and in these video tutorials, we are going to explain the same to you. You will learn the intricate details of downstream processing along with the techniques of proteomics. Biomathematics and thermodynamics are offshoots of the same and this is why we have lectures devoted to the same. Learn about enzyme science and engineering and explore the details of how biotechnology can help you make some of the smartest products which you can hope for.

Feel free to explore the different lectures and go through them to polish your expertise in the area. Our video lectures will make you an expert in the area of biotechnology and you will be better equipped to understand the dynamics of this field of science

Watch the video: Biology Tutorials. ClassXII. Organisms and Population. Adaptations (August 2022).