Cidesco Questions with Verified Answers (Graded A)

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