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Science Study Card
Lifestyle chemistry and Bionimedical technology
| Question | Answer |
|---|---|
| Reliability | The occurrence is guaranteed E.g a clock that is out by 3 minutes, will always be 3 minutes out. This is guaranteed that despite not being accurate the time will still show only 3 minutes out. |
| Validity | Is it testing what you think your testing |
| Independent Variables | The changed/altered part of an experiment in order to complete the experiment. (There should only be one independent variable for a valid experiment) |
| Dependent variables | What changes when the independent variable changes. The dependent variable changes in accordance with the outcome of the independent variable |
| The name for a Liquid that dissolves substances | A Solution |
| Mixture that settles out quickly | A Suspension |
| What is an emulsion | A mixture of two or more immiscible(unblendable) liquids |
| What is the name of a solid and liquid mixture evenly dispersed, however not dissolved in one another that settles over a lengthy time | A Colloid |
| An example of a surfactant is | Soaps and detergents |
| Surfactant | A surfactant is a group of chemicals that are SURFACE ACTIVE AGENTS. They affect the surface tension of a liquid |
| What are the two types of emulsions | Oil in water and Water in oil |
| Substances that Decompose in the environment | Biodegradable |
| Naturally occurring organisms on skin | Bacteria |
| 3 Main properties of skin | 1: Waterproofing 2: Temperature control 3: Protects against disease causing bacteria |
| Skin pH measured on a scale of 0-14 | 4.5 - 6 - Slightly acidic |
| pH is a measure of | Acidity |
| What is the Menisci | the upward curvature of e.g. water in a test tube |
| 2 main solvents in medications are | 1: Water 2: Alcohol |
| Why are water and alcohol used as solvents | Water: Used with substances that need to flow as it is a highly soluble substance Alcohol is used as an alternative to water and is better used for fatty and oily substances that water has a harder time dissolving |
| Stomach pH level | between 0.5 and 2 (acidic) |
| Roles of stomach | Secretes Gastric juice to dilute acid Muscular layers churn and digest food |
| pH of the small intestines | roughly 8 (alkaline) |
| Role of small intestines | To Secrete digestive enzymes digest fats Products of digestion are absorbed into bloodstream |
| Tablets that dissolve in the small intestines | Enteric coated tablets |
| Fat soluble vitamins | A,D,E,K ( remember as a word it helps) ADEK |
| Water soluble vitamins | B!, B2, B12 and C ( remember all the B's count 1 and 2 than put them together for 12 and than think oranges :P ) |
| 3 ways for drug administration | Orally Inhalation Injection |
| SA node or Sinoatrial node | Specialized cells in the right atrium of the heart, send electrical impulses causing the heart to beat |
| UHMWPE | Ultra High Molecular Weight polyethylene and is used in Large replacement joints |
| The medical procedure when using a balloon to inflate hardened arteries is called | Balloon angioplasty |
| What types of synovial joints do elbows and knee joints classify as | Hinge joints |
| Non invasive medical techniques are | When no physical infiltration is required |
| Minimally invasive medical techniques are | when Next to none or little physical infiltration is required. Quick recovery times |
| Biomedical implants must be | Bio compatible, highly durable, flexible and as lightweight a possible |
| Heart valve disease where blood flow is limited to the body is called | atherosclerosis |
| The job of the Skeleton system | 1: To sustain movement 2: To hold muscle in place 3: protect organs and holds organs in place |
| Ligaments | Bone to Bone or Bone to cartlidge |
| Tendons | Attach muscle to bone |
| Vlaves ( in the heart ) | Ensures one way flow of blood. prevents blood backflow during contractions |
| Ball and cage valve | A substitute heart valve. |
| The circulatory system | Transports food, water, oxygen and blood in and out of cells |
| Life support systems | Defibrillator Heart Lung machine IV's Antibiotics etc... |
| Hearts double beat sound (bah bump) | The process of two separate valves functioning. one flows to and from the respiratory system. the other flows to and throughout the circulatory system. |
| Two causes (medical) for irregular heartbeat | Tachycardia and Brachicardia |
| Superalloys | Superalloys are a combination of several different metal components and plastics used to create a stronger and more durable material |
| Cemented and non cemented joints | Cemented: To use an Specific type of "glue" and bolts etc to literally cement the joint in place Uncemented: The joint is hammered into place causing trauma to the bone this causes it to grow rapidly into the porous surface. This creates a stronger bon |
| A solvent | A liquid that a solute dissolves in. |
| Oil is immiscible in water unless using an emulsifier which works by | Surrounding the oil globules |
| Gas in liquid colloids | e.g Foam |
| Solid in Gas | e.g Smoke |
Created by:
sagey
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