Biology Worksheets and Study Guides High School

Animal Form and Function

Food Chains and Food Webs

Biological dynamics of Earth. Relationships within a community: predation, competition, parasitism, mutualism, commensalism. Construct a food chain. Construct a trophic-level pyramid (energy level). Compare and contrast food webs and food chains. Read more...iWorksheets: 3Vocabulary: 2

Human biology I

Bronchi - large tubules that branch from the trachea to carry air in and out of the lungs. Capillaries - the smallest blood vessels found in very rich networks between arteries and veins; the site where many substances are exchanged. Antibodies - a specific protein produced by B lymphocytes that attaches to an antigen and leads to its removal. Read more...iWorksheets: 4Vocabulary: 7

Human biology II

Antigen - a molecule that the immune system recognizes as part of the body or foreign to the body. Appendicular skeleton - a part of the skeleton composed of 126 bones found in the flexible regions of the body, including shoulders, hips and limbs. Axial skeleton - the central, anchoring part of the bony skeleton that consists of the skull, backbone (vertebrae) and rib cage. Bile - a chemical produced by the liver and stored temporarily in the gall bladder that is released into the intestines to help in fat digestion. Read more...iWorksheets: 3Vocabulary: 7

Introduction to animals

Classification - the process of grouping items together according to their similarities. Kingdom - large category included in scientific classification system and the taxonomic category above phylum; scientists recognize six kingdoms: animals, plants, fungi, protista, eubacteria, and archaebacteria. Vertebrates - animals that have a backbone; five main groups of vertebrates: fish, birds, reptiles, amphibians and mammals. Read more...iWorksheets: 4Vocabulary: 3

Vertebrates I

Vertebrates - animals that have a backbone. The word comes from vertebrae, the bones that make up the spine. Five main groups of vertebrates: fish, birds, reptiles, amphibians and mammals. A few tens of thousands of species have been identified. Read more...iWorksheets: 3Vocabulary: 3

Vertebrates II

A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone. The 7 classes of vertebrates are: Class Aves, Class Reptilia, Class Agnatha, Class Amphibia, Class Mammalia, Class Osteichthyes, Class Chondrichthyes. Read more...iWorksheets: 3Vocabulary: 3


Ecology I

Match each ecology term to its definition like Energy pyramid, Decomposer, Carnivore, Ecosystem, Owl pellet, Omnivore and many more. Which human activity would be more likely to have a positive/negative impact on the environment? Which factor determines the type of terrestrial plants that grow in an area? Which energy transfer is least likely to be found in nature? Read more...iWorksheets: 4Vocabulary: 2

Ecology II

Match each Ecology term to its definition like Trophic level, Food web, Consumer, Energy, Herbivore and more. Which component is not recycled in an ecosystem? Why Vultures, which are classified as scavengers, are an important part of an ecosystem? Which characteristic does creeping vine that is parasitic on other plants shares with all other heterotrophs? Read more...iWorksheets: 3Vocabulary: 2

Evolution & Biological Diversity

Evolution and classification

Categorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets: 3


Invertebrates are animals that don't have a backbone. More than 90 percent of all living animal species are invertebrates. Familiar examples of invertebrates include arthropods, mollusks, annelid, and cnidarians. Like vertebrates, most invertebrates reproduce at least partly through sexual reproduction. Read more...iWorksheets: 6Vocabulary: 3

Lab investigations/scientific method

A biologist reported success in breeding a tiger with a lion, producing healthy offspring. Other biologists will accept this report as fact only if other researchers can replicate the experiment. Read more...iWorksheets: 3

Microorganisms I

Hyphae - threadlike filaments of branching cells that make up the bodies of multicellular fungi. Gymnosperm - group of vascular plants that develop seeds without a protective outer covering; they do not produce flowers or fruit. Flagellum - a tail-like structure found on bacteria and select protists which helps them to move. Volvox - a freshwater, chlorophyll-containing green alga, that occurs in ball-shaped colonies. Read more...iWorksheets: 4Vocabulary: 5

Microorganisms II

Taxonomy is the classification of all known living organisms that shows relationships between different organisms. Pseudopod is false feet; temporary fingerlike projections a one-celled organism, such as an amoeba, uses to move. Protozoa - single-celled, animal-like protist that has the ability to move. Mycelium - a mass of fungal hyphae that absorbs nutrients. Read more...iWorksheets: 3Vocabulary: 5

Pond Microlife

Food vacuole - a small sac-like structure in which captured food is digested. Micronucleus - the smaller of the two nuclei present in some protozoa that contains the genetic material and controls cell reproduction. Paramecium - a single-celled protozoan covered with hair-like cilia, found in many freshwater habitats. Read more...iWorksheets: 3Vocabulary: 4

The science of biology

The processes of science include the formulation of scientifically investigable questions, construction of investigations into those questions, the collection of appropriate data, the evaluation of the meaning of those data, and the communication of this evaluation. Scientific knowledge is based on observation and inference; it is important to recognize that these are very different things. Read more...iWorksheets: 3

Genetics and Heredity

Chromosomes, Genes and DNA

Chromosomes are made up of DNA (deoxyribonucleic acid), the hereditary material in humans and most of other organisms. Specific sections of the DNA are called genes. Each gene provides the cell with different information. Each chromosome is made up of many genes. There are about about 100000 genes found on human chromosomes. A gene is made up of a particular sequence of DNA bases. This sequence acts as a code for a protein. The production of different proteins determines the trait (inherited characteristic) of an organism. Read more...iWorksheets: 3Vocabulary: 3

DNA technology/genetic engineering

This topic is about biology and Forensic science. Students will learn to identify the structure and function of DNA, RNA and protein. They will also learn to describe the importance of generic information to forensics. Read more...iWorksheets: 4Vocabulary: 3

Genetics and heredity I

How many chromosomes would normally be contained in a gamete? Match each Genetics and heredity term to its definition like Genetic code, Crossing-over, Fertilization, Codon, Dominant allele, Ribosomes, Sex cells, Punnett square, Prophase II. Read more...iWorksheets: 4Vocabulary: 7

Genetics and heredity II

By whom were first described the principles of dominance, segregation, and independent assortment? What did Gregor Mendel discover using the results of his experiments with plant crosses? Match each Genetics and heredity term to its definition like Splindle fibers, Telophase, Trait, Transcription, Mutation, Phenotype. Read more...iWorksheets: 3Vocabulary: 7

Nucleic acids and protein synthesis

The term nucleic acid is the name for DNA and RNA. They are composed of nucleotides. DNA molecules are double-stranded and RNA molecules are single-stranded. To initiate the process of information transfer, one strand of the double-stranded DNA chain serves as a template for the synthesis of a single strand of RNA that is complementary to the DNA strand. Read more...iWorksheets: 4Vocabulary: 3

The Study of Heredity

Heredity refers to the genetic heritage passed down by our biological parents when certain traits are passed from the parents to the children. Traits are characteristics such as height, hair color etc... Heredity is passed through genes in the Deoxyribonucleic acid (DNA) molecule. DNA is a molecule that contains the biological instructions that make each species unique. Read more...iWorksheets: 2Vocabulary: 3

Plant Form and Function

Introduction to plants

Which woody plant structure possesses vascular tissue lenticels? From which part of the seed will the leaves and upper portions of the stem of a plant develop? Match each plants term to its definition like Lactic acid fermentation, ovule, gymnosperm, guard cells, phloem, vascular tissue, root cap. Read more...iWorksheets: 3Vocabulary: 5

Plant structure and function

Plants are living organisms made up of cells. Plants need sunlight and water to live and grow healthy. Many plants, but not all plants, produce flowers, which make fruit and seeds in order for the plant to reproduce. There are two different types of root systems: A fibrous root system has many roots that grow in many different directions. Plants that have a taproot system have only one large main root growing from the plant’s stem. Read more...iWorksheets: 4Vocabulary: 2

The Cell

Cell processes

FreeCellular metabolism is the set of chemical reactions that occur in living organisms in order to maintain life. Living organisms are unique in that they can extract energy from their environments and use it to carry out activities such as growth, development, and reproduction. Read more...iWorksheets: 3Vocabulary: 7

Cell Reproduction

The process where one cell forms two identical daughter cells. Mitosis is how somatic—or non-reproductive cells—divide. Meiosis is cell division that creates sex cells, like female egg cells or male sperm cells. Meiosis has two cycles of cell division, called Meiosis I and Meiosis II. Read more...iWorksheets: 4

Cell structure and function

Match each Cell structure term to its definition like DNA, Lysosomes, Mitochondrion, Lipids, Endoplasmic reticulum, Osmosis and many more. What are the organelles that provide the energy to sperm cells? What hemoglobin, insulin, albumin and maltase are composed of? These animal and plant cell worksheets recommended for students of High School Biology. Read more...iWorksheets: 3Vocabulary: 5

Introduction to cells

All living things are made from one or more cells. The nucleus is the control center of the cell. It houses the nucleolus and genetic material (chromatin) used for directing cell functions. Nuclear pores allow materials to pass in and out of the nucleus. The nuclear envelope is a membrane which surrounds and protects the nucleus. The nucleolus produces ribosomes. Ribosomes are factories that produce proteins needed by the cell. Lysosomes contain chemicals (enzymes) that break down and recycle harmful materials. Read more...iWorksheets: 3Vocabulary: 4


Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females. Prophase I - a phase of meiosis during which chromosomes thicken and homologous pairs of chromosomes move together. Metaphase I - a phase of meiosis I during which homologous pairs of chromosomes line up in the center of the cell. Read more...iWorksheets: 3Vocabulary: 3


Structures and functions of living organisms: Cells, Tissues, Organs, and Organ Systems. Differentiate between the processes of mitosis and meiosis. Describe different cell parts and their functions. Read more...iWorksheets: 2Vocabulary: 3

Photosynthesis and respiration

Photosynthesis may be thought of as a chemical reaction in which carbon dioxide from the air and water from the soil plus solar energy combine to produce carbohydrate and oxygen. What is similarity between human skeletal muscles and some bacteria? Match each Photosynthesis ad respiration term to its definition like Glucose, Chloroplast, Organelle, Guard Cells and many more. Read more...iWorksheets: 4Vocabulary: 2

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