1) What is the function of an electrical transformer? a) Change the voltage of an electrical current b) Store electrical energy c) Convert electrical energy into mechanical energy d) Measure electrical resistance 2) What is a negatively charged particle known as? a) Proton b) Electron c) Neutron d) Ion 3) What is a positively charged particle known as? a) Electron b) Neutron c) Proton d) Ion 4) What type of radiation has the shortest wavelength? a) UV rays b) Infrared c) X-ray d) Gamma rays 5) Which UV rays are mainly responsible for sunburn? a) UVA b) UVB c) UVC d) UV light 6) When absorbed by the skin UV rays may damage or destroy this? a) Collagen b) Keratin c) Elastin d) Epidermis 7) What Vitamin does the skin produce in response to UV exposure? a) Vitamin A b) Vitamin C c) Vitamin D d) Vitamin E 8) How is melanin produced and where are melanin granules found? a) Produced by keratinocytes; found in stratum corneum b) Produced by melanocytes; found in dermis c) Produced by melanocytes; found in stratum spinosum and basale d) Produced by fibroblasts; found in hair follicles 9) 9. What are the four fundamental states of matter? a) Solid, liquid, gas and vapour b) Solid, liquid, gas and plasma c) Solid, vapour, liquid and plasma d) Solid, liquid, energy and plasma 10) What is an electrical current? a) A flow of protons b) A flow of neutrons c) A flow of electrons d) A flow of ions 11) What does a rectifier do? a) Change direct current to alternating current b) Change alternating current to direct current c) Measure electrical voltage d) Store electrical energy 12) What does a fuse do? a) Protects a circuit from overloading b) Converts energy into heat c) Measures electrical current d) Regulates voltage 13) Describe how heat energy is transferred? a) Heat flows from low temperature to high temperature b) Heat flows from high temperature to low temperature c) Heat flows in a circular motion d) Heat flows through electrical current 14) ultraviolet light causes skin cancers because it can penetrate the skin and damage the DNA in cells to such a degree that abnormal cell activity takes place? a) True b) False 15) What would be the effects of an infrared radiation lamp on the body? a) Increase in skin temperature, stimulation of circulation, relax muscles b) Decrease in skin temperature, reduce circulation, tighten muscles c) Increase in oxygen, improve nutrient flow, decrease temperature d) Reduce erythema, tighten tissues, improve oxygen flow 16) Where does the absorption of laser light happen? a) Collagen in the dermis b) Melanin in the hair shaft c) Keratin in the epidermis d) Elastin in the dermis 17) What is the fundamental principle of electricity used in iontophoresis? a) Opposite charges attract, same charges repel b) Charges flow in a circuit c) Charges are neutralised in iontophoresis d) Charges are stored in the cell membrane 18) What part of the cell allows the movement of substances from one cell to another? a) Nucleus b) Mitochondria c) Cell membrane d) Cytoplasm 19) What vitamin does UV exposure help the body produce? a) Vitamin B b) Vitamin C c) Vitamin D d) Vitamin A

Beauty Therapy Science Revision

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