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Biology Worksheets, Notes, and Quizzes (PDF and PNG)

This is a collection of free biology worksheets, notes, handouts, slides, study guides and quizzes. Most content targets high school, AP biology, genetics, anatomy/physiology, immunology, and biology 101 and 102 in college. There is also biochemistry and physics for biologists. However, some resources are at the grade school and middle school level.

The files are PDF, PNG, JPG, and formats using Google Apps for Google Classroom. Most of the time, these formats are interchangeable. So, if you see something you like, but want a different format, just let us know. Print these resources, make transparencies and slides, etc.

In the interest of quick load time, not all of the images are shown. If you’d rather see them all, just contact us!

Biochemistry

[ Google apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Enzymes Definitions

[ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

• 20 Amino Acids [ PNG ][ PDF ]
• Amino Acid Side Chains [ PNG ][ PDF ]
• Identifying Type of Biological Macromolecules [ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]
• Disaccharide Examples [ PNG ]
• Products of Photosynthesis [ JPG ]
• Anabolism vs Catabolism [ PNG ]
• 3 Parts of a Nucleotide [ PNG ]
• Fermentation Definition and Examples [ PNG ]

General and Cell Biology

Organelles and Their Functions

Parts of a Plant Cell

Label Parts of a Chloroplast

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Label Parts of a Mitochondria

Label the Animal Cell

[ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Prokaryotes vs Eukaryotes Worksheet

Steps of the Cell Cycle

Steps of Mitosis

Membrane Transport Terms and Definitions

Membrane Transport Worksheet #2

The Plasma Membrane

Label a Bacterial Cell

• Label a Bacteriophage [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Evidence of Evolution Worksheet [ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]
• Evolutionary Processes Worksheet [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Major Receptor Families [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Label a Bacterial Cell Membrane ( E. coli ) [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Anatomy and Physiology

These worksheets are only a portion of the available anatomy and physiology worksheets. Human anatomy and physiology worksheets have their own section.

Label the Heart

Label the Eye

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ]

Types of Blood Cells

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Label the Muscles

[ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Label the Ear

[ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

Label the Lungs

Label the Kidney

Label the Liver

Label the Large Intestine

Label the Stomach

[ Google Apps worksheet ] [Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

External Nose Anatomy

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answers PNG ]

Parts of the Nose

Label Bones of the Skeleton

Label the Lymph Node

Label the Parts of the Brain

Label the Lobes of the Brain

Brain Anatomical Sections

Arteries of the Brain

Label the Pancreas

Label the Spleen

Label the Digestive System

Label the Respiratory System

Parts of a Neuron

Label the Lips

Label the Skin

Label the Circulatory System

The Urinary Tract

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]

The Bladder

• The Female Reproductive System [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Parts of a Flower

Label the Orchid Plant

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ] [Answer Key PNG ]

Parts of an Orchid Flower

Parts of a Monocot Seed

Parts of a Fern

Parts of a Tree Trunk

Parts of a Tree

[ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Parts of a Mushroom

Label the Shark

Label the Fish

Parts of a Bird

Bird Anatomy

Frog Life Cycle

Parts of a Mosquito (Insect)

Bones of the T. rex Skull

[ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]

Holes of the T. rex Skull

• Label the T. rex Skeleton [ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Label Human Teeth [ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]
• Monocot vs Dicot Seeds [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Label the Moss [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Diagram of the Human Eye [ JPG ]

Use a completed worksheet as a study guide.

Cells of the Immune System

Immune Cell Functions

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG #1][ answers PNG #1][ worksheet PNG #2][ answers PNG #2]

Methods to Study Virus Structures

[ worksheet Google Slide ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Icosahedral Virus Capsids

Human DNA Viruses

Human RNA Viruses

This is selection of worksheets relating to DNA, RNA, transcription, translation, genetic crosses, plasmid mapping, etc. See the full collection of genetics worksheets if you’re don’t see what you need.

DNA Replication

Types of Mutations

Monohybrid Cross Worksheet #1

Monohybrid Cross Worksheet #2

Monohybrid Cross Worksheet #3

Monohybrid Cross #4 – Multiple Alleles

• Monohybrid Cross Worksheet #5: Multiple Alleles [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Monohybrid Cross #6 – Sex-Linked Inheritance

Monohybrid Cross #7 – Sex-Linked Inheritance

Dihybrid Cross Worksheet #1

Dihybrid Cross Worksheet #2

Dihybrid Cross Worksheet #3

Dihybrid Cross Worksheet #4

Dihybrid Cross #5 – Epistasis

Dihybrid Cross #6 – Epistasis

Incomplete Dominance Worksheet #1

Incomplete Dominance Worksheet #2

Natural Selection Worksheet

Convergent vs Divergent Evolution Worksheet

Intro to Pedigrees Worksheet #1

Pedigrees/Genealogy Worksheet #2

Pedigrees/Genealogy Worksheet #3 – X-Linked Dominant Traits

Pedigrees/Genealogy Worksheet #4 – X-Linked Recessive Traits

Pedigrees/Genealogy Worksheet #5 – Autosomal Dominant Traits

Pedigrees/Genealogy Worksheet #6 – Autosomal Recessive Traits

Pedigrees/Genealogy Worksheet #7 – Comprehension Skills

Pedigrees/Genealogy Worksheet #8 – Identifying Inheritance Patterns

Autosomal vs Sex-Linked Inheritance

Plasmid Mapping

• Genotype vs Phenotype [ PNG ]
• Genetic Codon Chart [ PNG ][ PDF ]
• RNA vs DNA [ JPG ]

Use labelled diagrams as study guides.

Ecosystems Worksheet

Levels of Organization (Ecosystem)

Primary Succession

Secondary Succession

Label the Insect

Label the Bee

Chicken Life Cycle (Basic)

Bird Life Cycle (Basic)

Butterfly Life Cycle

• Biotic and Abiotic Factors [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]
• Kingdoms of Life Graphic [ PNG ]
• Autotroph vs Heterotroph Graphic [ PNG ]
• Commensalism Definition and Examples [ PNG ]
• Difference Between Butterflies and Moths [ JPG ]
• Difference Between Bugs and Insects [ PNG ]

Parasitology

Schistosome Life Cycle

Schistosome Anatomy

• Giardia Life Cycle [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Physical Science for Biology

There is also an entire section devoted to physical science worksheets and study guides.

• Adhesion vs Cohesion Graphic [ PNG ]
• What Is Entropy? [ PNG ]
• Freezing Point of Water [ PNG ]

Biology Labs

• How to Extract DNA From a Banana [ PNG ]

Biology Word Search Puzzles

• DNA Replication Word Search
• Gel Electrophoresis Word Search
• Citrus Fruits
• General Biology Word Search Puzzle [ PNG ]
• Life Science Word Search [ PNG ][ PDF ]
• Cell Biology Word Search [ PNG ][ PDF ]
• Amino Acid Word Search [ PNG ][ PDF ]
• Biome Word Search [ PNG ][ PDF ]
• Environmental Science Word Search [ PNG ][ PDF ]
• Photosynthesis Word Search [ PNG ]
• Human Skeleton Bones Word Search [ PNG ]
• Dinosaur Word Search [ PNG ][ PDF ]
• Different Dinosaur Word Search [ PNG ][ PDF ]
• Wild Cats Word Search [ PNG ][ PDF ]
• Shark Word Search [ PNG ]
• Trees Word Search [ PNG ][ PDF ]
• Flowers Word Search [ PNG ][ PDF ]
• Butterfly Word Search [ PNG ][ PDF ]
• Genetics Word Search [ PNG ][ PDF ]

Miscellaneous Biology Notes and Resouces

• How Long Can Germs Live on Surfaces? [ PNG ]
• 10 Radioactive Foods [ PNG ]
• Examples of Organic Compounds [ PNG ]

Biology Notes Terms of Use

You are welcome to print these resources for personal or classroom use. They may be used as handouts or posters. They may  not  be posted elsewhere online, sold, or used on products for sale.

This page doesn’t include all of the assets on the Science Notes site. If there’s a table or worksheet you need but don’t see, just let us know.

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Biology Homework Help

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Biology , the study of life, can be fascinating and wondrous. However, certain biology topics can sometimes seem incomprehensible. The best way to get a clear understanding of difficult biology concepts is to study them at home, as well as at school. Students should use quality biology homework help resources when studying. Below are some good resources and information to help you answer some of your biology homework questions.

Key Takeaways

• Biology homework and assignments can be difficult to understand. Always make sure to avail yourself of all available resources so that you can succeed.
• Your instructor, fellow students, and tutors can be invaluable to help make sure that you get clarification on concepts that you don't understand.
• Understanding key biological concepts like cell processes, DNA, and genetics are helpful in understanding some of the foundations of biology.
• Use sample biology quizzes and online resources to test your grasp of biology concepts.

Biology Homework Help Resources

Anatomy of the Heart Learn about this amazing organ that supplies blood to the entire body.

Animal Tissues Information on the structure and function of animal tissue types.

Bio-Word Dissections Learn how to "dissect" difficult biology words  so that they are easy to understand.

Brain Basics The brain is one of the largest and most important organs of the human body. Weighing in at about three pounds, this organ has a wide range of responsibilities.

Characteristics of Life What are the basic characteristics of life?

• How To Study for Biology Exams

Biology exams can seem intimidating and overwhelming. The key to overcoming these obstacles is preparation. Learn how to do well on your biology test.

Organ Systems The human body is made up of several  organ systems  that work together as one unit. Learn about these systems and how they work together.

The Magic of Photosynthesis Photosynthesis is a process in which light energy is used to produce sugar and other organic compounds.

Eukaryotic and Prokaryotic Cells Take a journey into the cell to find out about the cell structure and classification of both prokaryotic cells and eukaryotic cells.

Cellular Respiration Cellular respiration is the process by which cells harvest the energy stored in food.

Differences Between Plant and Animal Cells Plant and animal cells are similar in that both are eukaryotic cells. However, there are several important differences between these two cell types.

Prokaryotic Cells Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. Prokaryotes include bacteria and archaeans.

10 Different Types of Cells in the Human Body

The body contains trillions of cells that come in varying shapes and sizes. Explore some of the different types of cells in the body.

7 Differences Between Mitosis and Meiosis Cells divide either through the process of mitosis or meiosis. Sex cells are produced through meiosis, while all other body cell types are produced through mitosis.

DNA Processes

Steps of DNA Replication DNA replication is the process of copying the DNA within our cells. This process involves RNA and several enzymes, including DNA polymerase and primase.

How Does DNA Transcription Work? DNA transcription is a process that involves the transcribing of genetic information from DNA to RNA. Genes are transcribed in order to produce proteins.

Translation and Protein Synthesis Protein synthesis is accomplished through a process called translation. In translation, RNA and ribosomes work together to produce proteins.

Genetics Guide Genetics is the study of inheritance or heredity. This guide helps you to understand basic genetics principles.

Why We Look Like Our Parents Have you ever wondered why you have the same eye color as your parent? Traits are inherited by the transmission of genes from parents to their young.

What Is Polygenic Inheritance? Polygenic inheritance is the inheritance of traits such as skin color, eye color and hair color, that are determined by more than one gene.

How Gene Mutation Occurs A gene mutation is any change that occurs in the DNA . These changes can be beneficial to, have some effect on, or be seriously detrimental to an organism.

What Traits Are Determined by Your Sex Chromosomes? Sex-linked traits originate from genes found on sex chromosomes. Hemophilia is an example of a common sex-linked disorder that is an X-linked recessive trait.

Cellular Respiration Quiz Cellular respiration allows cells to harvest the energy in the foods we eat. Test your knowledge of cellular respiration by taking this quiz!

Genetics and Heredity Quiz Do you know the difference between codominance and incomplete dominance? Test your knowledge of genetics by taking the Genetics and Heredity Quiz!

How Much Do You Know About Mitosis? In mitosis, the nucleus from a cell is divided equally between two cells. Test your knowledge of mitosis and cell division by taking the Mitosis Quiz!

Getting Additional Help

The above information provides a basic foundation for various biology topics. If you find that you still have problems understanding the material, don't be afraid to request assistance from an instructor or tutor. They can help clarify concepts so that you can gain a deeper understanding of biological concepts.

• Biology Prefixes and Suffixes Index
• Biology Prefixes and Suffixes: epi-
• Biology Prefixes and Suffixes: -ectomy, -ostomy
• Biology Prefixes and Suffixes: dactyl-, -dactyl
• Biology Prefixes and Suffixes: heter- or hetero-
• Biology Prefixes and Suffixes: -phyll or -phyl
• Karyo- or Caryo- Biology Prefixes and Suffixes
• Biology Prefixes and Suffixes: meso-
• End- or Endo- Biology Prefixes and Suffixes
• Biology Prefixes and Suffixes: Derm- or -Dermis
• Biology Prefixes and Suffixes: proto-
• Biology Prefixes and Suffixes: phago- or phag-
• Biology Prefixes and Suffixes: -stasis
• Biology Prefixes and Suffixes: staphylo-, staphyl-
• How To Take Good Biology Notes

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Biology Homework Help Resources

Lab reports, worksheets, and all those questions at the end of each chapter. The weight of completing all that biology homework can feel overwhelming. If you’re looking for help to beat the stress, there are some important resources to check out. Everyone is aware of the Khan Academy, and their overview of the Krebs or Citric Acid Cycle clocking in at 4 million views is one of their most popular videos of all time. If you want a clear understanding of how metabolism works, that video is the place to start for biology homework help. If you’re looking for biology resources for college students, other options exist. MIT Blossoms compiles a list of resources discussing advancements in the field, activities, web animations to understand biological functions, career advice, and more.

Every day, 50-70 billion cells in your body die. They cease to exist at the same time that they are replaced by dividing cells in the rest of your body through a process called mitosis. Another aspect of biology important to your existence concerns DNA, which consists of a sugar-phosphate backbone to keep everything together. Your DNA measures a few centimeters long but only a few nanometers wide. To keep it all organized, your DNA gets wrapped around histones in order to create what is known as a nucleosone. If that does not all make sense, it might be time to pursue one of two options. You can either watch a ton of YouTube videos on Veritasium, or you could work with an expert to help you figure out the ext steps.

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Department of Biological Sciences

Physical Address: Life Sciences South 252

Mailing Address: 875 Perimeter Drive MS 3051 Moscow, ID 83844-3051

Phone: 208-885-6280

Fax: 208-885-7905

Email: [email protected]

Web: Department of Biological Sciences

Tanya Miura

Professor & chair.

Life Sciences South 252

208-885-6280

[email protected]

View Tanya Miura's profile

Douglas G. Cole

Professor and associate chair.

Life Sciences South 162

208-885-4071

[email protected]

View Douglas Cole's profile

Onesmo Balemba

Life Sciences South 259

208-885-8023

[email protected]

View Onesmo's profile

Senior Instructor

Life Sciences South 164A

[email protected]

View Lisa Bird's Profile

Life Sciences South 266B

[email protected]

View Jim Bull's Profile

Ginger E. Carney

Professor & dean, college of science.

208-885-6195

[email protected]

View Ginger Carney's Profile

Larry J. Forney

Distinguished professor emeritus.

Life Sciences South 344

208-885-6011

[email protected]

View Larry Forney's profile

Elizabeth (Lee) Ann Fortunato

Life Sciences South 147

208-885-6966

[email protected]

View Lee's Fortunato's profile

Nicole Grieshaber

Research associate professor.

Life Sciences South 164B

208-885-0001

[email protected]

View Nicole Grieshaber's profile

Scott Grieshaber

Gibb Hall 133

208-885-5068

[email protected]

View Scott Grieshaber's profile

Luke J. Harmon

Life Sciences South 347

208-885-0346

[email protected]

View Luke Harmon's profile

Candi Heimgartner

Life Sciences South 261

[email protected]

View Candi Heimgartner's profile

Paul Hohenlohe

Professor, director, bioinformatics and computational biology graduate program.

[email protected]

View Paul Hohenlohe's Profile

Jill L. Johnson

Life Sciences South 148

208-885-9767

[email protected]

View Jill Johnson's profile

Adam G. Jones

[email protected]

View Adam Jones's profile

Shirley Luckhart

Professor, co-director of institute for health in the human ecosystem.

Life Sciences South, Rm 262

208-885-1698

[email protected]

View Shirley Luckhart's profile

Christopher Marx

Gibb Hall 134

[email protected]

View Chris Marx's profile

Craig Miller

Assistant professor.

[email protected]

View Craig Miller's profile

Diana Mitchell

Associate professor.

Life Sciences South 150

208-885-0305

[email protected]

View Diana Mitchell's profile

James J. Nagler

Professor and director, center for research on invasive species.

208-885-2009

[email protected]

View James Nagler's profile

Scott L. Nuismer

Life Sciences South 266C

208-885-4096

[email protected]

View Scott Nuismer's profile

Mary E. Oswald

Life Sciences South 260

208-885-4095

[email protected]

View Mary Oswald's profile

Christine Parent

Life Sciences South 257

208-885-4016

[email protected]

View Christine Parent's profile

Barrie Robison

Professor; director iids.

Life Sciences South 441A

[email protected]

View Barrie Robison's profile

Paul Andrew Rowley

Gibb Hall 132

[email protected]

View Full Profile

Deborah L. Stenkamp

Life Sciences South 266D

[email protected]

View Deborah Stenkamp's profile

John "Jack" M. Sullivan

Life Sciences South 345

208-885-9049

[email protected]

View Jack Sullivan's profile

Professor Emerita

Life Sciences South 258

208-885-5015

[email protected]

View Eva Top's Profile

Klas I. Udekwu

208-885-1517

[email protected]

View Klas Udekwu's Profile

Holly A. Wichman

University distinguished professor; director, imci.

208-885-7805

[email protected]

View Holly A. Wichman's profile