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Definition
| a group of similar organisms that can mate with eachother and produce fertile offspring |
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| preserved remain or traces of an organism that lived in the past |
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Definition
| a trait that helps an animal survive and reproduce |
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Definition
| the gradual change in a species over time |
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Definition
| a well-tested concept that explains a wide range of observations |
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Definition
| process by which individuals that are better adapated to their environment are more likely to survive and reproduce than other members of the same species |
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Definition
| similar structures that related species have inherited from a common ancestor |
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Definition
| a diagram that shows how scientists think different groups of organisms are related |
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Definition
| fossils that formed when minerals replace all or part of an organism |
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Definition
| a hollow space in sediment in the shape of an organism or part of an organism |
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Definition
| a copy of the shape of the organism that make the mold |
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Definition
| a way of determining which of two fossils is older |
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Definition
| a technique that allows scientist to determain actual age of fossils |
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Definition
| unstable elements that decay or break down into different elements |
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Definition
| a readioactive elemnt that the time it takes for half of the atoms in a sample to decay |
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Definition
| millions of fossils that scientists have collected |
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Definition
| calender of Earth's history |
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Definition
| The body system that consists of the heart, blood vesssels, and blood; circulatory system |
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Definition
| no members of that species are still alive |
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Definition
| A hollow, muscular organ that pumps blood throughout the body |
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Definition
| The difference in pressure above and below the wings as a bird moves through the air produces an upward force that causes the bird to rise. The upward force |
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Definition
| a theory that proposes that evolution occurs slowly but steadily |
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Definition
| Each of the two upper chambers of the heart that recieves blood that comes into the heart |
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Definition
| endothermic vertebrates that have a four-chambered heart, skin covered with fur or hair, their babies are born alive, young fed with milk from mammary glands. |
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Term
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Definition
| a theory species ecolve quicky during relatively short periods |
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Definition
| organs that produce milk in mammals |
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Definition
| large muscle located at the bottom of the ribs that plays an important role in breathing |
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Definition
| waxy, waterproof layer that covers the leaves of most plants |
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Definition
| mammals whose young are born at an early stage of development, and they ysyally continue to develop in a ppouch on their mother's body |
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Definition
| A group of cells located in the right atruim that sends out signals that make the heart muscle contract and that regulates heartbeat rate |
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Definition
| the length of time between fertilization and birth |
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Definition
| a system of tubelike structures inside a plant through wich water, minerals, and food move |
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Definition
| babies developp inside its mother's body until its body systems can f unction independently |
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Definition
| an organ in pregnant female mammals that passes materials between the mother and the developing embryo |
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Definition
| the fertilized egg in fertilization |
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Definition
| low-growing and do not have roots for absorbing water from the ground |
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Definition
| A lower chamber of the heart that pumps blood out to the lungs and body |
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Definition
| the basic unit of structure ad function in a living thing |
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Definition
| plants with true vascular tissue. these are better suited to life in dry areas |
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Definition
| forms the outside boundry of the cell |
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Definition
| the plant prduces spores, tiny cells that can grow into new organisms |
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Definition
| A flap of tissue in the heart or a vein that prevents blood from flowing backward |
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Definition
| the control center that directs the cell's activities and contains the information that determines the cell's form and function |
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Definition
| A blood vessel that carries blood away from the heart |
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Definition
| the material within a cell apart from the nucleus |
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Definition
| when a spore develops into the plant's other stage. the plant prduces two kinds of sex cells: sperm cells and egg cells |
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Definition
| a group of similar cells that perform the same function |
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Definition
| can contract, makes part of your body move, carries out movement |
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Definition
| rootlike structures that anchor the sporophyte generation |
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Definition
| A tiny blood vessel where substances are exchanged between the blood and the body cells |
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Definition
| directs and controls the body's processes |
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Definition
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Definition
| provides support for your body and connects all of its parts |
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Definition
| a type of vascular tissue in which food moves through |
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Definition
| A blood vessel that carries blood back to the heart |
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Definition
| tissue covering surfaces of your body, inside and out |
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Definition
| a structure that is composed of diffferent kinds of tissue |
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Definition
| a vascular tissue that caries water and minerals |
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Definition
| The largest artery in the body |
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Definition
| tiny structures that contain the cells that will later become sperm cells |
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Definition
| a group of organs that work together to perform a major function |
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Definition
| the body's tendency to keep an internal balance |
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Definition
| An artery that supplies blood to the heart itself |
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Definition
| a structure that contains a yhoung plant indide a protective covering |
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Definition
| the reaction of your body to potentially threatening, challenging, or disturbing events |
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Definition
| your "framework", made up of all the bones in your body |
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Definition
| a young plant that develops from the zygote, or fertilized egg |
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Definition
| The alternation expansion and relaxaion od an artery wall as blood travels through an artery |
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Definition
| small bones that make up your backbone |
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Definition
| the seed leaves of an embryo |
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Definition
| when the embryo begins to grow again and pushes out of the seed |
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Definition
| The process of change that occurs during an organism's life to produce a more complex organism |
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Definition
| protects the root from injury from rocks as the root grows through the soil |
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Definition
| a place in the body where two bones come together |
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Term
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Definition
| a place in the body where two bones come together |
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Definition
| The pressure that is exerted by the blood against the walls of blood vessels |
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Definition
| a strong connective tissue that connects bone to bone |
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Definition
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Definition
| layer of cells which divides to produce new pholeom and xylem |
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Definition
| type of cennective tissue that is more flexible than bone |
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Definition
| beneath the bone's outer membrane is a layer which is hard and dense but not solid |
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Definition
| A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body |
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Definition
| the process by which water evaporates from a plant's leaves |
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Definition
| type of bone has many small smapes within it |
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Definition
| soft connective tissue found in the spaces of bone |
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Definition
| a seed plant that produces naked seeds |
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Definition
| A iron-containing protein that binds chemically to oxygen molcules |
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Definition
| a condidtion in which the body's bones become weak and break easily |
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Definition
| A blood call that fights disease |
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Definition
| muscles not under your conscious control |
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Definition
| reproduction structures of gymnosperms |
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Definition
| muscles under your conscious control |
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Definition
| a structure that contains an egg cell |
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Definition
| A cell fragment that plays an important part in forming blood clots |
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Term
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Definition
| the transfer of pollen from a male reproductive structure to a female reproductive structure |
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Definition
| muscles attached to the bones of your skeleten and provide force that moves your bones |
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Term
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Definition
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Term
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Definition
| connective tissue that attaches muscle to bone |
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Definition
| muscle that appears banded |
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Term
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Definition
| the reproductive structure of an angiosperm |
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Term
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Definition
| A network of veinlike vessels that returns the fluid that leaks out of the blood vessels to the bloodstream |
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Definition
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Term
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Definition
| The fluid that the lymphatic system collects and returns to the bloodstream |
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Definition
| colorful and leaflike. generally most colorful part of a flower |
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Definition
| the male reproductive parts |
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Definition
| an involuntary muscle found inside many internal organs of the body |
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Definition
| muscle found in the heart |
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Term
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Definition
| A small knob of tissue in the lymphatic system that filters lymph, trapping bacteria and other microorganisms that cause disease |
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Definition
| female parts and found in the center of most flowers |
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Definition
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Definition
| hollow structure that protects the seeds as they develope |
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Definition
| a pigment that gives skin its color that is produced to protect the skin from sun burn |
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Definition
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Definition
| a ripened ovary and other structures that enclose on or more seeds |
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Definition
| angiosperms that have only one seed leaf |
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Definition
| The process by which cells break down simple food molecules to release the energy they contain |
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Definition
| an opening through which sweat reaches the skin |
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Definition
| produce seeds with two leaves |
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Definition
| structures in which hair grow out of |
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Term
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Definition
| The hairlike projections on the outside of cells that move in a wavelike manner |
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Definition
| a disease in which some cells in the body divide uncontrollably |
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Definition
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Definition
| all members of this phylum |
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Definition
| a flexible rod that supports a chordate's back |
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Term
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Definition
| substances in food that provide the raw materials and energy the body needs to carry out all its essential processes |
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Definition
| The windpipe; a passage through which air moves in the respiratory systems |
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Term
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Definition
| amount of energy needed to raise the temperature of on egram of water by one degree celcius |
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Definition
| many small similar bones that make up the back bone |
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Term
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Definition
| many small similar bones that make up the back bone |
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Term
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Definition
| The passages that direct air into the lungs |
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Term
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Definition
| an animal whose body doesn't produce much internal heat |
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Term
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Definition
| an animal whose body regulates its own temperature by controlling the internal heat it produces |
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Definition
| An organ found in air-breathing vertebrates that exchanges oxygen and cardon dioxide with the blood |
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Term
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Definition
| an energy rich organic compound made of the elements carbon, hydrogen, and oxygen |
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Definition
| a vertebrate that lives in water and uses fins to move |
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Definition
| a tissue that is more flexible than bone |
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Definition
| sugar, major source of energy for your body's cells |
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Term
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Definition
| Tiny sacs of lung tissue specialized for the movement of gases between air and blood |
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Term
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Definition
| energy-containing nutrients that are composed of carbon, oxygen, and hydrogen. provides the MOST energy |
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Term
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Definition
| an organ that the bony fish has that is internal and filled with gas. It helps the fish stay stable at different depths in the water |
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Definition
| nutrients that are made of nitrogen, carbon, hydrogen, and oxygen, needed for tissue growth/repair, chemical reactions in cells |
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Definition
| A large muscle located at the bottom of a mammals's rib cage that functions in breathing |
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Definition
| small units that proteins are made up of |
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Definition
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Definition
| a vertebreate that is ectothermic and spends its early life in water |
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Definition
| the larva of a frog or a toad |
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Definition
| Folds of connective tissue that stretch across the opening of the larynx and produce a person's voice |
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Definition
| molecules that act as helpers in a variety of chemical ractions within the body |
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Definition
| The process by which wastes are removed from the body |
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Definition
| organs of air-breathing vertebrates in which oxygen gas and carbon dioxide gas are exchanged between the air and the blood |
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Term
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Definition
| two upper chambers of the heart |
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Definition
| A chemical that comes from the breakdown of proteins |
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Term
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Definition
| lower chamber of the heart, pump blood out to the lungs and body |
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Definition
| nutrients that are not made by living things |
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Definition
| specific environment in which an animal lives |
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Definition
| nutrients that are not made by living things |
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Definition
| nutrients that are not made by living things |
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Definition
| A major organ of the excretory system that removes urea and other wastes from the blood |
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Term
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Definition
| an ecotothermic vertebrate that has lungs and scaly skin |
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Definition
| A watery fluid produced by the kidneys that contains urea and other wastes. |
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Definition
| shows you how the nutritional content o fone serving fits into the recommended diet for a person who consumes 2,000 calories per day |
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Definition
| organs that filter waste from the blood |
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Definition
| The hollow muscular organ of the female reproductive system in which a fertilized egg develops |
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Term
| dietary reference intakes |
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Definition
| guidelines that show the amounts of nutrients that are needed every day |
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Definition
| a watery fluid prduced by the kidneys tht contains urea and other wastes |
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Definition
| A sacklike muscular organ that stores urine until it is eliminated from the body |
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Definition
| endothermic vertebrate, has feathers, four-chambered heart, lays eggs |
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Term
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Definition
| an egg with a shell and internal membranes that keep the embryo moist |
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Definition
| A small tube through which urine flows from the body |
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Definition
| large feather that gives shape to a bird's body |
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Definition
| the hardened remains or other evidence of a living thing that existed a long time ago |
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Definition
| short, fluffy feathers; trap heat and to keep bird warm |
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Definition
| Small filtering structure found in the kidneys that removes wastes from blood and produes urine |
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Definition
| internal storage tank in bird |
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Definition
| thick-walled muscular part of the stomach in a bird |
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Definition
| process by which your body breaks down food into small nutrient molecules |
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Definition
| hardened layers of sediments |
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Definition
| hardened layers of sediments |
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Definition
| the scientists who study extinct organisms |
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Definition
| process by which nutrient molecues pass through the wall of your digestive system into your blood |
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Definition
| fluid released when your mouth waters |
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Definition
| proteins that speed up chemical reactions in the body |
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Definition
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Definition
| muscluar tube that connects the mouth to the stomach |
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Definition
| thick slippery substance produced by the body that makes food easier to swallow and move along |
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Term
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Definition
| involuntary waves of muscle contraction that push the food downward towards the stomach |
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Definition
| J-shaped muscular pouch located in the abodmen |
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Term
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Definition
| part of the digestive system where most chemical digestion takes place |
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Definition
| largest organ in the b ody, produces bile, right portion of abdomen |
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Definition
| substance that breaks up fat particles |
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Definition
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Term
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Definition
| triangular organ that lies between the stomach and the first part of the small intestine; produces enzymes that help breakdown STARCHES, PROTEINS, and FATS |
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Term
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Definition
| millions of finger-like structures that cover the surface of the small intestine that absorb nutrient molecules |
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Term
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Definition
| last section of digestive system |
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Definition
| where large intestine ends |
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Definition
| muscular opening at the end of the rectum |
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