Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Level 1 NCEA Micro-organisms definitions

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Term
Definition
ACQUIRED IMMUNITY   Immunity that develops after some contact with the micro-organism either through vaccination or natural exposure.  
🗑
AEROBIC   A form of respiration requiring oxygen in which energy-rich compounds (eg carbohydrates, fats) are broken down to produce adenosine triphosphate (ATP), which is the form of energy made available to cells for metabolic and catabolic reactions.  
🗑
AGAR   Polysaccharide extracted from seaweed used to set culture media into a gel  
🗑
ANAEROBE   An organism such as Tetanus bacterium that doesn’t need oxygen for respiration. A strict anaerobe is actually poisoned by oxygen.  
🗑
ANAEROBIC   Respiration that occurs in the cytoplasm in the absence of oxygen; may include the breakdown of energy rich compound (creatine phosphate) to make ATP but most anaerobic respiration involves glycolysis resulting in breakdown of glucose to pyruvic acid.  
🗑
ANTIBIOTIC   a substance produced by a living micro-organism which kills or inhibits the growth of another micro-organism eg penicillin produced by fungi (white part of bread mould), stops some bacteria growing and reproducing. It is taken internally.  
🗑
ANTIBODY   Protein made by the immune system in response to an antigen. The antibody binds with the antigen and inactivates it.  
🗑
ANTIGEN   Foreign substance (usually a protein in the toxin of the invading microbe) that can stimulate the immune system to produce white blood cells to attack it.  
🗑
ANTISEPTIC   a mild chemical that kills or inhibits the growth of some micro-organisms. Often used on skin, in mouthwashes etc. eg Savlon. H2O2 (hydrogen peroxide) and ethanol are common components of antiseptics to treat mild wounds.  
🗑
BACTERIA   A unicellular micro-organism with a protein coat surrounding its cell wall which is outside the cell membrane. (singular = bacterium). Reproduces using binary fission and feeds using extra-cellular digestion.  
🗑
BINARY FISSION   Method of reproduction where a cell makes a copy and splits into two.  
🗑
DISINFECTANT   stronger chemical to destroy (kill) or inhibit microbial growth – used on non-living surfaces eg toilet and walls etc eg bleach, Jeyes and Detol.  
🗑
ENZYME   a protein molecule that acts as a biological catalyst speeding up a chemical reaction by lowering the activation energy required for the reaction. Often name ends in –ase eg lipase, lactase.  
🗑
EXTRACELLULAR DIGESTION   the breakdown of large complex organic molecules outside the organism, into smaller, simpler materials, that can be readily absorbed and used by the organism;  
🗑
FUNGI   The largest micro-organism. Varies from one cell (yeast) to multi-cellular organisms (mushroom). Contains a hyphae and sporangia and spreads using spores. Feed through extra-cellular digestion.  
🗑
HYPHAE   plural of hypha: a branched thread-like tubular structure which forms the basic unit of the vegetative growth stage of fungi such as mushrooms, toadstools;  
🗑
MYCELLIUM   the networked mass of hyphae, which make up the bulk of a fungus  
🗑
IMMUNITY   The body’s internal protection system against micro-organisms which can cause disease and disrupt the body’s metabolism.  
🗑
INATE IMMUNITY   Bodily mechanisms that help protect the organism against any disease (non-specific) eg skin; tears.  
🗑
INOCULATE   the introduction of micro-organisms (the inoculum) or cells from a multi-cellular organism into a medium – usually agar.  
🗑
LYMPHOCYTES   White blood cells that are produced by the body for fighting infection. Two types – B and T lymphocytes.  
🗑
METABOLISM   Sum of all physical and chemical processes that take place in a living organism. Can be intra-cellular (in the cytoplasm of a cell) or extra-cellular (outside the cell eg digestive system).  
🗑
NANOMETRE   Unit of very small distance measurement. 1nm = 1/1000mm or 1 billionth of a metre.  
🗑
PASSIVE IMMUNITY   Antibodies made by another organism (eg mother) and passed on to another organism (eg baby). Can be passed on through placenta or breast-milk.  
🗑
PASTEURISATION   A process of heating a substance at a high temperature eg 70oC for a certain length of time eg 10mins, to kill microbes which would otherwise spoil the food.  
🗑
PATHOGEN   a micro-organism that causes disease in the plant or animal it infects.  
🗑
RESISTANCE   Some bacteria mutate (miscopy a nucleotide base on the DNA) and new strains (versions) of that bacteria can develop a resistance to an antibiotic which means it won’t work.  
🗑
RESPIRATION   a process of breaking down glucose using oxygen to produce energy (ATP). Carbon dioxide and water are waste products.  
🗑
SAPROPHYTE   an organism which feeds on dead or decaying matter in the form of organic substances in solution; such organisms play a key role in biodegradation and nutrient recycling.  
🗑
SPORANGIUM   plural sporangia; part of the fungus which produces spores  
🗑
SPORES   A small, usually single celled reproductive body form which a new organism arises when conditions are suitable for germination; spores contain no embryo which distinguishes them from seeds.  
🗑
TOXIN   a poisonous protein produced by bacteria, plants or animals; toxins act as antigens (a substance which triggers the production of an antibody).  
🗑
VACCINATION   Process of inserting dead or live micro-organisms to assist the body’s immune system in developing antibodies to fight that particular micro-organism.  
🗑
VIRUS   The smallest micro-organism which is always pathogenic to its host. Consists of protein coat, DNA or RNA and may have other appendages. Reproduces using the DNA of the host cell.  
🗑
WHITE BLOOD CELLS   Produced by the bone marrow and used to fight infection. Two types – phagocytes and lymphocytes.  
🗑


   

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
 
To hide a column, click on the column name.
 
To hide the entire table, click on the "Hide All" button.
 
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
 
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

 
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
Created by: simkar
Popular Biology sets