click below
click below
Normal Size Small Size show me how
Living Environment
Topic 2: Homeostasis in Organisms
Question | Answer |
---|---|
Enzymes | Proteins that speed up the rate of chemical reactions in living things |
Respiration | The process by which the chemical bond energy stored in nutrients is released for use in cells |
Synthesis | A life process that involves combining simple substances into more complex and substances |
Photosynthesis | The process by which some organisms are able to capture light energy and use it to make food from carbon dioxide and water |
Glucose | A sugar that is a major source of energy for cells |
ATP | (Adenine Triphosphate) a compound that stores energy in cells |
Chloroplasts | Green organelles that contain chlorophyll; where photosynthesis takes place |
Pancreas | An endocrine organ that secretes insulin |
Insulin | A hormone that prompts glucose to move from the blood into body cells, resulting in lower glucose level in the blood |
Guard cells | Specialized cells that control the opening and closing of the pores on the surface of a leaf |
Pathogen | An organism that invades the body, causing disease. |
Antigen | A molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body or an outside invader |
Antibody | A protein, produced by the immune system, that either attacks invading pathogens or marks them for killing |
Vaccines | A substance made of weakened, killed, or partial pathogens and designed to protect the body from future invasions of that pathogen |
AIDS | (Acquired Immunodeficiency Syndrome) The disease that results when the HIV virus attacks the human immune system |