Cidesco Questions Answered 100% correct 2023

Cidesco Questions Answered 100% correct 2023 Biological and non-biological substances both need oxygen for their existence (true or false) False The human body consists only of biological substances (true or false) False Every living organism needs some non-biological substances for its existence (true or false) True All non-biological substances are found as minerals in the earth (true or false) False Characteristics of life include growth and metabolism Examples of synthetic substances are.... plastics and silicones Examples of organic biological substances are.... carbohydrates and fats Examples of mineral substances are.... paraffins and petroleum Everything that occupies space and has weight is called.. matter Three forms of matter... solids, liquids, gases What property does all matter have? all matter has weight Condensation is the change of matter from.... gas to a liquid Vaporization is the change of matter from... liquid to gas Melting is the change of matter from... solid to liquid Sublimation is the change of matter from.... solid to gas Condensation is the change of matter from... vapor to liquid The alteration of the properties of matter without the formation of any new substance is called a.... physical change The immediate change of a solid into a vapor is called... sublimation An example of a singe-celled cellular organism is... bacterium A micro-organism is the smallest part of the human body (true or false) false All micro-organisms need nutrients for their existence (true or false) correct Examples of bacteria are... bacilli and cocci Science deals mainly with... physics and chemistry The study of the structure of the body anatomy The study of the functions of living organisms physiology Anatomy is a very important science in the field of biology. ( true or false) true Anatomy is the science which deals with the functions of the human body. (true or false) false Physiology is a very important science in the field of biology. (true or false) true Science of chemistry The alteration of the structure of molecules Chemical reactions only take place outside and not inside a living organism. (true or false) false The structure of molecules change during chemical reactions. true What does the field of physics include? heat and electricity, sound Negatively charged atom anion A negatively charged chloride atom (CI-) anion A positively charged sodium atom (Na+) cation A substance which , dissolved in water, splits into ions electrolyte Examples of electrolytes are... acids, salts Why is an acid an electrolyte? it can conduct an electric current Example of an inorganic acid is... sulphuric acid An alkali must contain... metal atoms and hydroxyl groups (OH) Example of an alkaline substance is... soap If a metal-oxide is dissolved in water it forms... an alkali The pH scale is used to measure the degree of.... alkalinity or acidity pH can be decreased by... increasing hydrogen-ions What does the letter "p" stand for in "pH"? potential The number of free H-ions in a solution pH If the pH of a solution is between 5 and 7, the solution is.... weak acid If the pH of a solution is between 1 and 3, the solution is... strong acid If the pH of a solution is between 7 and 9, the solution is.... weak alkali If the pH of a solution is between 12 and 14 the solution is.... strong alkali What is the pH of distilled water? 7 Lemon juice, with a pH reading of about 2, is considered to be.... acidic Pure water, with a pH of 7, is considered to be... neutral Substances having a pH value above 9.5 are considered to be.... alkaline What is the pH of the skins acid mantle? 5.5 What is a characteristic of a weak acid? supports the natural pH of the skin What is a characteristic of a weak alkali? softens the stratum corneum of the skin What is the effect of a strong acid? corrosive and therefore of no use in beauty therapy What is a chatacteristic of an organic acid? They contain the element carbon (C) Where are organic acids found? sebum and plants An organic acid contains the chemical group.... COOH A positevly charged electrode anode A negatively charged electrode cathode What are examples of electrodes that are used in beauty therapy? needles used for galvanic electrolysis Electro-magnetic waves in space radiation What is the unit of frequency? Hertz The number of times per second an electro-magnetic-wave can change direction frequency Name the correct order of colors in the visible spectrum... red, orange, yellow, green, blue, indigo, violet What are invisible rays that can be used in beauty therapy? infra-red and ultra violet Infra-red radion is.... invisible and can be felt Where is Infra-red radiation absorbed? in the dermis and muscles What are Infra-red rays used for? warming What is the effect of infra-red rays on the skin? warm the deeper layers of the skin What is an indication for a treatment with infra-red rays? a poor blood circulation in the skin What is a contraindication to treatment with infra-red rays? skin showing telangiectasias of the cheek area What is infra-red radiation used for in a massage? to warm tissues Why is ultra-violet radiation useful? Has a chemical effect on the skin Which form of radiation has the most anti-bacterial effect? UV-C What is the safest radiation that can be used to increase pigmentation? UV-A Which rays are mostly used in ray-treatments to increase pigmentation? UV-A and UV-B Where is Ultra-Violet radiation absorbed? mainly in the epidermis What is the radiation mainly responsible for tanning of the skin? UV-A What is skin cancer most likely caused by? Ultra-violet What is electric current? flow of electrons Which electric currents can be used in electrotherapy? High frequency currents of high voltage Middle frequency of low voltage Faradic and galvanic of low voltage What are examples of solid conductors? metals What are examples of liquid conductors? fluids in which ions are present body fluids and alkali solutions Which gas can conduct an electric current? neon What are examples of insulators? plastics, rubber What is the strength of an electric current measured by? amperage What is the pressure of electric current measured by? voltage What is the power of an electric appliance measured by? wattage In an electrical circuit, if the voltage is doubled and the resistance halved, the intensity of the current is.... increased 4 times What is the unit of current pressure? volt What is the unit of electrical resistance? ohm What is the unit of electrical power? watt What is a current with a constant strength in beauty therapy called? galvanic What is a "faradic type current"? An interrupted galvanic current