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Definition
| the process by which cells use energy to transport molecules through the cell membrane from areas of low concentration to areas of high concentration |
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Definition
| any one of several building blocks of protein |
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Definition
| the basic unit of structure and function that makes up all organisms |
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Definition
| the thin boundary between the cell and its environment |
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Definition
| the process by which nutrients are broken apart, releasing the chemical energy stored in them |
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Definition
| the green organelle that contains chlorophyll; where photosynthesis takes place |
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Definition
| the flow of materials within a cell as well as between parts of a multicellular organisms |
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Definition
| the jelly like substance that is between the cell membrane and the nucleus and that contains specialized structures |
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Definition
| the movement of molecules from areas of high concentration to areas of low concentration |
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Definition
| the process that breaks down large food molecules into simpler molecules that the organism can use |
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Definition
| proteins that speed up the rate of chemical reactions in living things |
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Definition
| the removal of all wastes produced by the cells of the body |
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Definition
| the ability of an organism to maintain a stable internal environment even when the external environment changes |
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Definition
| a chemical produced in the endocrine glands |
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Definition
| the body's ability to destroy pathogens before they cause disease |
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Definition
| a type of molecule that does not contain both carbon and hydrogen but can contain any other combination of elements |
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Definition
| all the chemical reactions that occur within the cells of an organism |
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Definition
| pod-shaped organelles that contain enzymes used to extract energy from nutrients |
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Definition
| a large structure within a cell that controls the cell's metabolism and stores genetic information, including chromosomes and DNA |
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Term
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Definition
| a body structure made of different kinds of tissues combined to perform a specific functions |
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Term
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Definition
| several organs that work together to perform a major function in the body |
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Term
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Definition
| a structure within the cell that carries out a specific function |
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Definition
| term used to describe molecules that contain both hydrogen and carbon |
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Term
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Definition
| certain protein molecules in the cell membrane that can receive chemical messages from other cells |
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Term
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Definition
| the process by which organisms produce new organisms of the same type |
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Term
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Definition
| the process by which the chemical bond energy stored in nutrients is released for use in cells |
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Term
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Definition
| one of the tiny structures in the cell that is the site of protein production |
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Definition
| the results of the digestion of starches (ex: glucose is a simple sugar) |
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Term
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Definition
| a life process that involves combining simple substances into more complex substances |
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Term
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Definition
| a group of specialized cells that perform a specific function |
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Term
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Definition
| storage sack within the cytoplasm of a cell that may contain either wastes or useful materials, such as water or food |
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Term
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Definition
| (acquired immunodeficiency syndrome) the disease that results when the HIV virus attacks the human immune system |
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Term
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Definition
| a condition in which a persons immune system is overly sensitive to environmental substances that are normally harmless |
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Term
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Definition
| a medicine produced by microorganisms used to destroy pathogens in humans and domestic animals |
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Term
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Definition
| a protein, produced by the immune system that either attacks invading pathogens or marks them for killing |
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Term
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Definition
| a molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body or an outside invader |
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Term
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Definition
| (adenosine triphosphate) a compound that stores energy in cells |
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Term
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Definition
| any one of many single-celled organisms without a distinct nucleus |
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Term
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Definition
| a chemical process that occurs in a living thing |
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Term
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Definition
| a substance that can speed up the rate of a chemical reaction without being changes or used up during the reaction |
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Term
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Definition
| a condition, other then injury, that prevents the body from working as it should |
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Term
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Definition
| the constant small corrections that normally occur to keep an organism's internal environment within the limits needed for survival |
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Term
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Definition
| a cycle in which the output of a system either modifies or reinforces the first action taken by the system |
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Definition
| the kingdom of organisms that are mostly multicellular, have cell walls made of chitin, and are heterotrophic |
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Definition
| the process of obtaining oxygen from the environment and releasing carbon dioxide |
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Definition
| a sugar that is a major source of energy for cells |
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Definition
| specialized cells that control the opening and closing of the pores on the surface of a leaf |
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Term
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Definition
| the body's primary defense against disease-causing pathogens |
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Term
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Definition
| a hormone that prompts glucose to move from blood into the body cells, resulting in a lower glucose level in the blood |
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Definition
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Term
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Definition
| a endocrine organ that secretes insulin |
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Definition
| an organism that survives by living and feeding on other organisms |
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Term
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Definition
| an organism that invades the body, causing disease |
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Term
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Definition
| a measure of whether a substance is acidic, neutral, or basic |
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Term
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Definition
| the process by which some organisms are able to capture light energy and use it to make food from carbon dioxide and water |
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Term
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Definition
| any change in the environment that causes an organism to react |
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Term
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Definition
| a substance made from weakened, killed, or partial pathogens and designed to protect the body from future invasions of that pathogen |
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Term
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Definition
| a nonliving particle or protein and genetic material that reproduces by invading the cell of a living organism |
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Term
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Definition
| a method of reproduction in which all the genes passed on to the offspring come from a single individual parent |
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Term
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Definition
| a technique used to make identical organisms |
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Term
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Definition
| the changes that occur from the fertilized egg to a complete individual; occurs by mitosis and differentiation of cells |
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Term
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Definition
| the process that transforms developing cells into specialized cells with different structures and functions |
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Term
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Definition
| a sex cell produced by a female |
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Term
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Definition
| an organism in the early stages of development (before birth) |
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Term
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Definition
| a hormone (produced by the ovaries) that controls female sexual development and the reproduction process |
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Term
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Definition
| the way that an unseen gene is seen in an organism as an actual physical trait |
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Term
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Definition
| the process that combines a sperm cell and an egg cell |
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Term
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Definition
| the unborn, developing young of an animal during the later stages of development |
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Term
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Definition
| an egg or sperm cell; sex cell |
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Term
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Definition
| the result of activated genes |
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Term
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Definition
| the process that results in the production of sex cells (sperm and egg) |
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Term
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Definition
| the process that divides the cell's nucleus into two, each with a complete set of genetic material from the parent cell |
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Term
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Definition
| the organ of the human female reproductive system where the egg cell is fertilized by the sperm |
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Term
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Definition
| the organ that enables nutrients and oxygen to pass from the mothers blood to the fetus, and waste products to pass from the fetus to the mother's blood |
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Term
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Definition
| a hormone associated with sexual development and the reproductive system |
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Term
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Definition
| the additional mixing of genetic material from a sperm and egg which results in a unique combination of genes |
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Term
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Definition
| an egg (female) or a sperm (male) |
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Term
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Definition
| the method of reproduction that involves two parents to produce offspring that are genetically different from either parent |
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Term
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Definition
| a group of organisms that share certain characteristics and can mate with one another, producing fertile offspring |
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Term
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Definition
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Term
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Definition
| the male reproduction organ that produces sperm and the hormone testosterone |
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Term
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Definition
| a hormone associated with male sexual development and reproduction |
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Term
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Definition
| the organ, in female animals, where the embryo develops into a fetus |
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Term
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Definition
| the cell that results from the joining of the egg and sperm |
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