Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Liv Env Topic 2
Stack #20698
| Question | Answer |
|---|---|
| AIDS | (acquired immunodeficiency syndrome) the disease that results when the HIV virus attacks the human immune system |
| Allergy | a condition in which a person’s immune system is overly sensitive to environmental substances that are normally harmless |
| Antibodies | a protein, produced by the immune system, that either attacks invading pathogens or marks them for killing |
| Antigen | a molecule found on the outer surfaces of cells that the immune system recognizes as part of the body or as an outside invader |
| ATP | (adenosine triphosphate) a compound that stores energy in cells |
| Bacteria | any one of many single celled organisms without a distinct nucleus |
| Biochemical processes | a chemical process that occurs in living things |
| Catalyst | a substance that can speed up the rate of a chemical reaction without being changed or used up during the reaction |
| Cellular Respiration | the process in which nutrients are broken apart, releasing the chemical energy stored in them |
| Chloroplast | the green organelle that contains chlorophyll; where photosynthesis takes place |
| Disease | a condition, other than injury, that prevents the body from working as it should |
| Dynamic equilibrium | the constant small corrections that normally occur to keep an organism’s internal environment within the limits needed for survival |
| Enzyme | protein that speed up the rate of chemical reactions in living things |
| Feedback mechanism | a cycle in which the output of a system either modifies or reinforces the first action by the system |
| Fungi | the kingdom of organisms that are mostly multicellular, have cell walls made of chitin, and are heterotrophic |
| Gas exchange | the process of obtaining oxygen from the environment and releasing carbon dioxide |
| Glucose | a sugar that is a major source of energy for cells |
| Guard cells | specialized cells that control the opening and closing of the pores on the surface of a leaf |
| Homeostasis | : the ability of an organism to maintain a stable internal environment even when the external environment changes |
| Immune system | the body’s primary defense against disease-causing pathogens |
| Insulin | a hormone that prompts glucose to move from the blood into body cells, resulting in lower glucose levels in the blood |
| Microbe | any microscopic organism |
| Mitochondria | : pod-shaped organelles that contain enzymes used to extract energy from nutrients |
| Pancreas | an endocrine organ that secretes insulin |
| Parasite | an organism that survives by living and feeding on other organisms |
| Pathogen | an organism that invades the body, causing disease |
| PH | a measure of whether a substance is acidic, neutral, or basic |
| Photosynthesis | the process by which some organisms are able to capture light energy and use it to make food from carbon dioxide and water |
| Respiration | : the process by which the chemical bond energy stored in nutrients is released for use in cells |
| Stimuli | any change in the environment that causes an organism to react |
| Stimuli | any change in the environment that causes an organism to react |
| Synthesis | a life process that involves combining simple substances into more complex substances |
| Vaccine | a substance made of weakened, killed or partial pathogens and designed to protect the body from future invasions of that pathogen |
| Virus | : a nonliving particle of protein and genetic material that reproduces by invading the cell of a living organism |
Created by:
scottp
Popular Biology sets