(a) State two functions of protein in the body
It promotes growth and development.
It repairs worn out tissues in the body.
It provides energy in the absence of carbohydrates
It supports production of hormones and enzymes

(b) List two ways by which patching can be done
By hand
By machine

(c) (i) Explain a design brief
A short statement that expresses the solution to a problem
Or
A statement of what the designer intends to design and make

(ii) List three methods of carrying out design investigations.
By observing carefully
By visiting
By experimenting
By reading relevant literature
By interviewing
By surfing the internet

(iii) State two factors to consider when selecting the best solution from the generated possible solutions in designing.
Its function / effectiveness
Its physical appearance (Aesthetics)
Its cost of designing and making
Its safety and suitability
Its durability

(d) (i) What is the colour spectrum?
The distribution of colours produced when white light is dispersed by a prism

(ii) List the three primary colours?
The primary colours for
(α) pigment: red, yellow and blue
(β) light (additive): red, green and blue
(γ) light (subtractive): magenta, cyan and yellow

(iii) Explain secondary colours
A colour resulting from the mixing of two primary colours in equal proportions

For pigment, the secondary colours are
Violet = (red + blue),
green = (yello + blue) and
orange = (red + yellow)

For light (additive), the secondary colours are
Yellow = (green + red)
Cyan = (green + blue)
Magenta = (red + blue)

For light (subtractive), the secondary colours are:
Red = (yellow + magenta)
Green = (yellow + cyan)
Blue = (magenta + cyan)