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
science exam
science exam stack
| Question | Answer |
|---|---|
| Before doing a lab experiment what do you do? | 1. Wait for teachers approval 2. Read instructons carefully |
| why not begin the experiment without a teachers approval? | may warn you of dangers,explain how to set up and the best way to do it |
| why not taste chemicals? | could be poisonous or dangerous |
| how do you smell chemicals? why? | wofting, smelling directly could be dangerouos |
| when should you wear safety goggles? | when working with chemicals, working with heat |
| what do you make sure of when using a test tube? | tube is pyrex, clean, not cracked, or chipped, and is never pointing to another tube |
| what do you do when you spill a chemical on yourself? | flush for 15 minutes with cold water |
| what do yuo do when you burn yourself? | run under cold water and tell a teacher |
| what do you do when your partners clothes catch on fire? | wrap around the fire the fire blanket |
| what do you do at the end of a lab? | wash hands, clean spills, wash containers |
| what do you do at the end of a lab with chemicals? | ask teacher |
| where do you put broken glass? | sharps bucket |
| what do you do with electrical cords? | dry hands, pull plug not cord, make sure plug is not frayed |
| what is a hypothesis? | an educated guess, if...then statement |
| what is the control group and the experimental group? | CG: standard group EG: gets experimental treatment |
| what is a cell membrane? | it controls what goes in and out of the cell |
| cell wall? | found in plants... protects plant, gives it structural support |
| nucleus? | control centre of the cell |
| lysosomes? | found in animals... breaks down food |
| ribosomes? | makes proteins |
| endoplasmic reticulam? | transports proteins to golgi body |
| golgi body? | sorts and packs proteins |
| mitochondrian? | produces energy |
| vacuole? | stores waste, water, and nutrients temporarally |
| chloroplasts? | found in plants only... photosynthisis |
| what is the differences between plant and animal cells? | p:have chloroplast and a cell wall (rectangular) |
| cytoplasm? | contains orgenelles, H2O, and other life supporting materials |
| who developed the cell theory? | many scientists |
| what is the cell theory? | 1. the cell is the basic unit of life 2. all organisms are composed of 1 or more cells 3. all cells come from other living cells |
| what are prokaryotic cells? Example. | without membrane bound orgenelles, very small in size(no nucleus, no golgi body, no mitochondria,no endoplasmic reticulam ect.) example: bacteria |
| what are eukaryotic cells? Example. | with membrane bound orgenelles, large in size, can be unicellular or multicellular (has nucleus, mitochondria, golgi body ect) example: mould |
| what is an example of bacteria? | streptococcus |
| how many specieces? | over 5000 |
| where are they found? | everywhere in the body |
| are they harmful? | some are (tuberculosis) |
| how do you classify bacteria? | by shape: bacilli is rod shaped, cocci is spherical, spirilla is spiral. |
| can they be killed? | some by antiseptics, some by antibiotics... some are antibiotic resistent (penicillan) |
| what are viruses? | non-cellular protein molecules that cause disease. |
| what do they contain? | genetic molecules (DNA) and surrounded by a protein coat |
| describe them, and give examples of viruses | very small... HIV, influenza,rhinovirus, chicken pox |
| how do they work? | get inside cells and use the orgenelles and enzymes to make more virus parts and reproduce. once the cell is filled with virus parts it bursts |
| what is diffusion? | the movement of particles from and area of higher concentration to an area of lower concentration |
| what is osmosis? | the diffusion of water particles through a selectivly impermeable membrane |
| what are the 3 characteristics of body systems? | 1. made of induvidual parts the work together as a whole 2. usually connected to one or more systems 3. if one part is missing or damaged the whole system will not function as well or at all |
| what are the different types of body systems? | digestive (breaks down food), circulatory (moves blood around the body) respiratory (gas exchange), exceratoy (remove liquid), immune (fights off viruses) |
| what is a nutrient? | any material taken into a body cell that has a useful functon |
| what are the 5 types of nutrients? | carbs, fats, proteins, vitimines, and minerals |
| what are the functions of water? | carries nutrients to the cells, carries away wastes. cools body (sweat), lubricant, helps digest carbs, fats, and proteins. |
| what are the 4 food groups? | grain products, fruits and veggies, milk products, and meat and alternatives |
| what are the functions and sources of carbs? | major source of energy, fuel for brain.. bread, cereal ect. |
| what are the functions and sources of fats? | keeps warm, energy reserve, cushions and supports the organs, and builds cell membrane... meat, butter, fish ect. |
| what are the functions and sources of proteins? | form bones, hair nails. Makes up skin and muscles, builds and repairs cell, blood clots, produces enzymes... fish, meat ect. |
| what are the functions and sources of minerals | builds bones and teeth, needed by blood cell |
| what are the functions and souorces of vitamines? | prevents scurvy (v.c) night blindness (v.a) rickets (v.b) |
| mechanical vs chemical digestion | M: teeth,stomach muscles |
| what are the types of enzymes and what are their functions | pepsin: BD proteins in stomach Bile: BD fats in gall bladder |
| the functions of teeth are what? | breaks down food into smaller pieces |
| salivary glands? | produce saliva |
| pharynx/throat | passage way for food |
| epiglottis? | stops food from entering lungs |
| esophagus? | brings food into stomach |
| stomach? | breaks down food chemically and physically |
| liver? | makes bile |
| gall bladder? | stores bile |
| pancreas? | produces digestive enzymes in small intestine |
| small intestine? | absorbs nutrients |
| large intestine? | creates feces |
| rectum? | stores feces |
| anus? | opening which feces passes |
| tongue? | helps move food around mouth |
| what are the parts of the exceratory system? | lungs, kidneys and skin |
| how do you breathe?ie. inhale | when you inhale, your diaphragm contracts and your ribs expand, causing the lungs to be pulled down, air rushes to fill the lungs. |
| how do you breathe?ie. exhale | when you exhale your diaphragm relaxes and the ribs take up less space. the chest cavity and lungs decrease |
| what are the parts of the respiratory system? | nasal cavity, pharynx, larynx, trachea, bronchus (bronchi), epoglottis, esophogus, alveoli, bronchioles, lungs, diaphragm |
| what is the path of air from nose to lungs? | air enters nostrils, which lead into a hollow called nasil cavity. air travels through the nasil cavities and trachea |
| what happens in the air when it is brought from the nose to the lungs? | It is cleaned (nose hairs), warmed (blood cells), moistened (mucus) |
| how do you take care of your respiratory system? | through exersize, where masks to avoid exposure to dangerous substances, don't smoke. |
| what are the 4 ways to transmit diseases? | 1.direct contact (shaking hands, sharing drinks)2.indirect contact (being near someone who sneazes of coughs) 3.water/food (drinking/eating things that are contaminated with bacteria 4.animal bites (being bitten buy an animal carrying the rabbis virus. |
| what is the 1st line of defence in the immune system? | skin and the surface of all internal organs protects us from invading pathogens, sweat and oil on skin is slightly acidic to prevent pathogens from growing on body, gastric juices destroy bacteria before entering stomach, |
| what does mucus and cilia in the nose do to help the first line of defence in the immune system | prevents pathogens from entering the respiratory system |
| what is the 2nd line of defence in the immune system? | if pathogens make it past the 1st line of defence our body starts an immune response to attack and destroy the invading pathogens. |
| what are the 2 types of immune response? | innate immune response and acquired immune response |
| explain them... | IIR: born with it, quick and general, response same for all pathogens AIR: takes about 1 week to develope, attack specific pathogens |
| what are B Cells? Memory B Cells? | produce antibodies to fight off |
Created by:
Bpuppy101
Popular Biology sets