Biology Crossword Puzzles

Biology Crosswords

To view or print a Biology crossword puzzle click on its title.

Title	Instructions / Description	Sample Puzzle Hints	Difficulty
Abiotic and Biotic		the living organisms in an ecosystem. a Biotic organism that can be found in lakes and rivers. an Abiotic factor that can be found everywhere on earth . a Biotic organism that can be found in every habitat on earth. a Biotic organism that is formed by spores absorbing water.	Older Children
Bacteria		organisms that can help or hurt your body. make more than one of. a third possible shape of bacteria; a special type of staircase. composing of only one cell. another possible shape o bacteria.	Older Children
Basic Biology	Find the word that fits!	The process in organisms of eliminating waste material. Things that do not breathe, reproduce, move, grow or show sensitivity. The basic unit of all living things. Organisms that grow, reproduce, use energy, breathe, move and excrete. The duration of life of a living organism.	Big
Biodiversity		Law designed to protect species in danger of extinction; passed by U.S. Congress in 1973. occurs when natural habitats are no longer able to support the species present. Transition from one biotic community to another after a disturbance. the process during which a large expanse of habitat is transformed into a number of smaller patches. Areas of high species diversity that are most at risk.	Hard
Biology	Life on Earth: Plants	an early stage development for an organism. provides food for the embryo. a reproduction system that switches back and forth. a process of change between two organisms. primary plant root.	Hard
Biology		study of life sciences. the necessary items for a particular purpose. the structural, functional and biological unit of all organisms. a vessel used to boil liquids in a lab. a vessel with a flat bottom and narrow neck used for mixing.	Older Children
Biology		the change a carrier protein undergoes. contains the pink colouring in the beetroot. this is the colour in the cell. proteins contained within the plasma membrane. a type of intergral protein.	Hard
Biology		a slight attraction that develops between the oppositely charged regions of nearby molecules. atom of an element that has the same number of neutrons different from that of other atom of the same element. attraction between molecules of the same substance. weak acid or base that can react with strong acids or base to help prevent sharp, sudden changes in pH. indicated the concentration of H+ ions in a solution.	Hard
Biology		Attraction of molecules of the same substance.. Macromolecule made mainly from carbon and hydrogen atoms; includes fats, oils, and waxes.. Protein that acts as a biological catalyst.. Weak acid or base that can react with strong acid or base to help prevent sharp sudden changes in PH.. Basic unit of matter..	Big
Biology	Fill in all the blanks!	One of two prokaryotic domains of life, the other being Archaea.. A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles. All organisms except bacteria and archaea are composed of eukaryotic cells.. An integrated group of cells with a common function, structure, or both. An organism that makes organic food molecules from C02, H20, and other inorganic raw materials: a plant, algae, or autotrophic bacterium. . A tentative explanation a scientist proposes for a specific phenomenon that has been observed.	Hard
Biology		a plastid that contains chlorophyll. a space or vesicle within the cytoplasm of a cell. any of a class of small organelles. cells apart from prokaryotic cells. the central and most important part of an object.	Older Children
Biology		the loss or removal of nitrogen or nitrogen compounds; specifically : reduction of nitrates or nitrites commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air.. resources are environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem. . rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitro. the chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.. the mass of living biological organisms in a given area or ecosystem at a given time. .	Hard
Biology		Contains cell sap.. Basic unit of life. Unicellular organisms only have one cell. Multicellular organisms have many cells.. What happens to an enzyme in high temperatures and pH's. a type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles.. Biological catalysts speed up chemical reactions. .	Older Children
Biology		Distinctive fossil used to compare relative ages of fossils. Someone who studies fossils. 2 species evolve in response to changes in each other over time. Formation of new and distinct species. Age of a fossil is determined by finding out absolute age of surrounding rock.	Hard
Biology		This is what pathogens produce that make us feel ill.. This a another name for a white blood cell. . A weakened form of of a pathogen that is injected into people. . DNA strands are held together by ....... Microorganisms that cause disease..	Older Children
Biology		a conjugated protein, consisting of haem and the protein globin, that gives red blood cells their characteristic colour. It combines reversibly with oxygen and is thus very important in the transportation of oxygen to tissues. he system by which ingested food is acted upon by physical and chemical means to provide the body with absorbable nutrients and to excrete waste products. an air cell of the lungs, formed by the terminal dilation of tiny air passageways.. either of the two main branches of the trachea.. the act of exhaling..	Big
Biology		Fermentation without oxygen. The supportive tissue of an epthelial organ, tumor, gonad, etc. Organisms that obrain food by consuming other living things. The first set of reactions in photosynthesis. The sequence of reactions by which most living cells generate energy during the process of aerobic respiration.	Hard
Biology		a type of eukaryotic organism kingdom that can be like a plant cell or an animal cell but does not fit in the animal or fungi kingdoms . the thread like structures that come out of fungi cells, they can contain many nucleui . food grown without pesticides or other chemicals . a hole filled with sap in a plant cell . the part of a cell where respiration takes place .	Hard
Biology		the variety of life on Earth.. the number of organisms of the same species that live in a particular geographic area . the parts of an experiment that don't change. the process in which organisms become better adapted to their environment in order to survive. a well-substantiated explanation of an aspect of the natural world.	Hard
Biology	Crossroad	A large naturally occurring community. Large group of organisms. an individual animal, plant, or single-celled life form. A group living in the same place. Any of the almost spherical concentric regions or matter that make up the earth.	Big
Biology		Membrane around the cell. A stack of sacs that prepare molecules for use eleswhere. Single membrane organelle containing enzymes. A network of filaments in the cell. Organelle responsible for photosynthesis.	Hard
Biology A&P		air filled organs located on either side of the chest. a hormones gland that plays a major role in metabolism. produces enzymes that are released to help with digestion. long continuous tube running from the stomach to the anus. converge to form veins.	Hard
Biology Cells		a type of endocytosis in which the cell engulfs large particles. the layer of phoso-lipids surrounding the inner parts of the cell. disease-causing strands of DNA or RNA that are surrounded by protein coats. release of substance out of a cell by the fusion of a vesicles with the membrane. allows molecules that cannot directly cross the phospholipid bolster to diffuse through transport proteins in the membrane.	Hard
Biology Habitats and Adaptations		Above ground roots that a mangrove uses to store oxygen.. Many plants living in this type of habitat have waxy leaves to reduce water loss.. Due to poor light absorption, some marine mammals have evolved to use this…. Organisms that live predominantly in trees.. A deep winter sleep..	Hard
Biology Systems		What system is made up of the autonomic nervous system, spinal nerves and cranial nerves?. A chemical messenger that is secreted from glands and diffused throughout the body in the blood to stimulate changes within the body.. One or more bundles of axons creating part of the system where impulses are sent between the brain, spinal cord and other parts of the body. . The internal environment of an animal's body has many factors that have to be kept at a steady set level (e.g. temperature and blood glucose level). The maintenance of these steady set state conditions in the body is called?. What is the word given to the system that is going on in the body but an animal is not conscious of it?.	Big
Biomass		a way biomass can be used to create energy using heat. a gas that decaying biomass produces. the act of collecting a crop once it is grown. large tub used for heating water to produce steam which helps produce energy. can't be created as quickly as it is used.	Hard
Biomass Energy	Fill in the cross word puzzel	_______ gas can be maid from biomass. _______ can be produced from biomass. bimass is any _______ material. biomass has ____. biomass can be converted to ___________.	Hard
Biotechnology & Genomics		Study of the sequence of DNA bases and the amount of genes in organisms.. DNA that has been synthesized from mRNA by the action of reverse transcriptase. Study of whole genomes. Technique that uses the enzyme DNA polymerase to produce millions of copies of a particular piece of DNA . Repetitive DNA sequence in which the repeats occur one after another in the same region of a chromosome..	Very Difficult
Cell		uses energy from the sun to make food for plants with the process of photosynthesis. . store food water metabolic and toxic wastes.. controls movement of materials in and out of nucleus.. packages and exports proteins.. strengthen the cell and maintains the shape..	Hard
Cell Biology		In plant cell. Captures energy from sunlight. Uses energy to produce cell food, which is sugar. . In animal cells, contains chemicals that break down certain material. Breaks down doead cells.. Transports and stores materials, including waste in animal cells. Directs all cell actions, including reproduction in both types of cells.. In plant cells, stores water, food, waste and more for a plant cell..	Hard
Cell Biology		Organelle where photosynthesis occurs. Reducing power molecule produced by plants. cAMP is called a secondary ________. Used to excite the reaction center of photosystem II and I. Electron donor for photosynthesis.	Big
Cell Biology and Culture		single celled organisms. stores materials in a cell. Make up proteins. Source of stored energy and insoluble in water. . All of an organism hereditary information..	Very Difficult
Cell Chemistry		Work or operate in a proper or particular way.. Large amount of a substance moving or transferring into another place.. Act or process of burning.. Luminous energy is the percieved energy of light. Sometimes called quantity of light.. make solution of as by mixing with a liquid pass into solution..	Hard
Cell Membrane Terms		A form of active transport in which cells transport molecules outside of the cell. Contraction of the cell membrane of a plant or animal cell as a result of loss of water from the cell. A state in which opposing forces or influences are balanced with particles still moving in and out of the cell, but at an equal rate. The process of particles, or solutes moving though a solution from an area with more particles to an area with less particles. The movement of materials across the cell membrane without using cellular energy.	Hard
Cell Organelles		Stores water and wastes in plant cells. Animal cells have smaller versions of this organelle. . Barrier between the inside of the cell and the outside environment. Regulates what gets in and out of the cell. . Attaches amino acids into a chain creating a protein. . Repackages and modifies lipids and proteins.. Provides structural support for the cell. .	Hard
Cell Structure		produces energy for the cell. stores food water waste. cells that perform the same function. basic unit of structure. life from non living sources.	Hard
Cell Theory & Cell Structure		organelles that carry out photosynthesis. the first to identify cells, and he named them. fluid filled sac used for storage of materials needed by a cell. have a nucleus and other membrane bound organelles. surfaces of the ER that do not contain ribosomes .	Hard
Cells		Site of photosynthesis. The cell walls of fungi are made up of this. Storage blob in plant cells. Type of fermentation used in muscle cells: ______ acid. Macromolecule made of fats and oils.	Hard
Cells		In plants, this organelle is very large. They are storage areas for food, water or waste.. This organelle is the outer part of the nucleus and has little pores to let good things in and keep bad things out.. The DNA strands that float inside of the nucleus.. These tiny organelles make proteins.. This organelle is the center of the cell and acts as the 'brain.'.	Hard
Cells		captures the light energy from the sun to make food. stores substances such as food, water and waste products. the basic unit of life. the smallest particle of an element that still has the properties of that element. information and control center of the cell.	Hard
Cells		An organelle that consists of chlorophyll.. A space within the cytoplasm of a cell surrounded by a membrane and usually contains fluid.. A group of specialized cells that hold a similar structure and function.. A cell membrane that lets certain molecules to pass through it. . A term used to describe biotic elements made of one cell. .	Hard
Cells & Organelles		when particles are enclosed in a vesicle and released from the cell. movement of particles across a cell membrane without the use of energy. a scientific theory that describes the characteristics of a cell and organisms. the smallest unit of living matter. a structure made up of a collection of tissues that carry out a specialized function.	Hard
Cells and Chromosomes		Like a storage area in the cell.. Produce proteins for the cell and for export.. The packaging center of the cell.. The place where chromosomes stay.. This structure surrounds the cytoplasm and acts like a gate..	Hard
Cells, Cell Division and the Cell Cycle	Using terms that we have learned so far in our Biology unit, fill in the crossword puzzle below.	This structure separates the inside of the cell from the external environment.. This organelle is the powerhouse of the cell. It produces energy the cell can use. . Cells divide because there is a ____________ to how big they can grow. . The first step in the cell division stage of the cell cycle that has 4 phases. . Cell division sometimes occurs to ____________ injured or damaged cells. .	Hard
Cloning		Applied science. Made by human work not natural. Make an exact copy of an animal or plant. Complete set of genes. All the people born and living about the same time.	Older Children
DNA		A cell that has two of every type of chromosome. A long chain of materials with glucose found in the natural world with it. A compound consisting a phosphate group. The passing of genes from parent to offspring. The physical feature on a creature .	Hard
DNA and Genetics	Michelle Tychalski	A segment of a DNA or RNA molecule containing into coding for a protein . a fibrous substance consisting of polysaccharides and forming the major constituent in the exoskeleton of arthropods and the cell walls of fungi.. contain the complete set of necessary chromosomes. DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. A gene locus when its cells contain 2 different alleles of a gene.	Hard
Ecologist		Organism that makes its own food for energy.. A series of steps by which energy moves from one type of living thing to another.. All living and nonliving things in an area and their interactions. A consumer that hunts and eats another animal.. Any animal that is hunted by others for food..	Big
Ecology		Living or once living parts of an organisim's habitat. The relation betwen two different organisims where one benifits. All living and non-living organisims in an area and the non-living features in an enviroment.. The relation of two in which one gets food or other benifits from the other.. A place where an organisim lives and has food,shelter,moistere, and temputre needed for survival.	Hard
Ecology		The order in which animals feed on plants and other animals (shows how energy flows from producer-consumer-decomposer). The continuous series of processes in which nitrogen passes from the air into the soil, then into an organism, and then back into the air is called the _________________ cycle.. All the living and nonliving things in an area and their interactions. The continuous circulation of water between the Earth’s surface and the atmosphere is called the _________ cycle.. The part of the ecosystem that is not alive and has never been alive .	Hard
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