CIDESCO EXAM PREP QUESTIONS AND CORRECT
ANSWERS
The alteration of the properties of matter without the formation of any new substance is
called a/an: - ANSWER -physical change
The immediate change of a solid into a vapour is called: - ANSWER -sublimation
An example of a single-celled cellula...
CIDESCO EXAM PREP QUESTIONS AND CORRECT
ANSWERS
The alteration of the properties of matter without the formation of any new substance is
called a/an: - ANSWER -physical change
The immediate change of a solid into a vapour is called: - ANSWER -sublimation
An example of a single-celled cellular organism is: - ANSWER -a bacterium
I. A micro-organism is the smallest part of the human body. II All micro-organisms need
nutrients for their existence. - ANSWER -I is incorrect and II is correct
Examples of bacteria are: - ANSWER -bacilli and cocci
I. Every living organism needs some non-biological substances for it's existence. II. All
non-biological substances are found as minerals in the earth. - ANSWER -I is correct
and II is incorrect
Science deals mainly with: - ANSWER -physics and chemistry
The study of the structure of the body is called: - ANSWER -anatomy
The study of the functions of living organisms is: - ANSWER -physiology
I Anatomy is a very important science in the field of biology. II Anatomy is the science
which deals with the functions of the human body. - ANSWER -I is correct and II is
incorrect
I Physiology is a very important science in the field of biology. II Physiology is the
science which deals with the functions of the body. - ANSWER -I and II are both correct
Which one of the following belongs to the science of chemistry? - ANSWER -The
alteration of the structure of molecules
I Chemical reactions only take place outside and not inside a living organism. II The
structure of molecules change during chemical reactions. - ANSWER -I is incorrect and
II is correct
The field of physics includes: - ANSWER -heat and electricity
Which one of the following belongs to the field of physics? - ANSWER -Sound,
electricity and heat
The field of physics includes: - ANSWER -the science of electricity
,An anion is: - ANSWER -A negatively charged atom
An anion is: - ANSWER -a negatively charged chloride atom (CI-)
A cation is: - ANSWER -A positively charged sodium atom (Na+)
An electrolyte is: - ANSWER -A substance which, dissolved in water, splits into ions
Examples of electrolytes are: - ANSWER -acids and salts
An example of an electrolyte is: - ANSWER -salt-solution
An acid is an electrolyte because: - ANSWER -it can conduct an electric current
An example of an inorganic acid is: - ANSWER -sulphuric acid
An alkali must contain: - ANSWER -metal atoms and hydroxyl group(s) (OH)
An 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 acidity or: - ANSWER -alkalinity
pH can be decreased by: - ANSWER -increasing hydrogen-ions
The letter p in pH means: - ANSWER -potential
pH is: - ANSWER -the number of free H-ions in solution
If the pH of a solution is between 5 and 7, the solution is a: - ANSWER -weak acid
If the pH of a solution is between 1 and 3 the solution is a: - ANSWER -strong acid
If the pH of a solution is between 7 and 9 the solution is a: - ANSWER -weak alkali
If the pH of a solution is between 12 and 14 the solution is: - ANSWER -strong alkali
The pH of distilled water is: - ANSWER -7
Lemon juice, with a pH reading of about 2, is considered to be: - ANSWER -acid
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
,The pH of the skin's acid mantle is: - ANSWER -5.5
A characteristic of a weak acid is that it: - ANSWER -supports the natural pH of the skin
A characteristic of a weak alkali is that it: - ANSWER -softens the stratum corneum of
the skin
The effect of a strong acid is: - ANSWER -corrosive and therefore of no use in beauty
therapy
A characteristic of organic acids is that: - ANSWER -they contain the element carbon
(C)
Organic acids are found in: - ANSWER -sebum and plants
An organic acid contains the chemical-group: - ANSWER -COOH
An anode is: - ANSWER -A positively charged electrode
A cathode is: - ANSWER -A negatively charged electrode
Examples of electrodes which are used in beauty therapy are: - ANSWER -the needles
used for galvanic electrolysis
In physics, radiation means: - ANSWER -the electro-magnectic waves in space system
The unit of frequency is: - ANSWER -Hertz
In physics, frequency means: - ANSWER -the number of times per second an electro-
magnetic-wave can change direction
The unit of frequency is: - ANSWER -Hertz
Hertz is a unit of: - ANSWER -frequency
In the visible spectrum the colours in the correct order are: - ANSWER -red, orange,
yellow and green
In the visible spectrum the colours in the correct order are: - ANSWER -green, blue,
indigo and violet
Invisible rays which can be used in beauty therapy are: - ANSWER -infra-red and ultra-
violet rays
Infra-red radiation: - ANSWER -is invisible and can be felt
, Infra-red radiation is absorbed: - ANSWER -in the dermis and muscles
Infra-red rays can be used in beauty therapy for: - ANSWER -warming
The effect of infra-red rays on the skin is to: - ANSWER -warm the deeper layers of the
skin
An indication for a treatment with infra-red rays is: - ANSWER -a poor blood circulation
in the skin
A contra-indication to treatment with infra-red radiation is: - ANSWER -skin showing
teleangiectasias on the cheek area
Infra-red radiation is used: - ANSWER -to warm the tissues before massage
Ultra-violet radiation can be useful in beauty therapy because of the: - ANSWER -
chemical effect on the skin
Which of the following 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
Ultra-violet radiation is absorbed: - ANSWER -mainly in the epidermis
The radiation mainly responsible for tanning the skin is: - ANSWER -UV-A
Skin cancer is most likely caused by: - ANSWER -Ultra-violet
An electric current is: - ANSWER -A flow of electrons
Which electric currents can be used in electrotherapy? - ANSWER -High frequency
currents of high voltage
Which electric currents can be used in electrotherapy? - ANSWER -High frequency and
middle frequency currents both of low voltage
Which electric currents can be used in electrotherapy? - ANSWER -Faradic and
galvanic currents both of low voltage
Examples of solid conductors are: - ANSWER -metals
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