Cosmetology Test Scientific Concepts 4

Question 1

Which pigment gives hair its color and is produced by melanocytes?

Accepted Answer

Melanin

Answer

Keratin

Answer

Collagen

Answer

Sebum

Question 2

What is the term for the ability of the hair to absorb and retain moisture?

Accepted Answer

Porosity

Answer

Elasticity

Answer

Texture

Answer

Density

Question 3

Which part of the electromagnetic spectrum is responsible for causing sunburn?

Accepted Answer

Ultraviolet rays

Answer

Infrared rays

Answer

Visible light

Answer

Radio waves

Question 4

What is the primary purpose of a conditioner's acidic pH (4.5–5.5)?

Accepted Answer

To close the cuticle and smooth the hair

Answer

To open the cuticle for deep penetration

Answer

To activate the color developer

Answer

To break disulfide bonds

Question 5

What does the term 'volatile' mean when describing a chemical used in cosmetology?

Accepted Answer

Easily evaporates at room temperature

Answer

Highly reactive with metals

Answer

Resistant to chemical change

Answer

Highly alkaline in nature

Question 6

The arrector pili muscle is responsible for which skin phenomenon?

Accepted Answer

Goosebumps

Answer

Sebum production

Answer

Sweating

Answer

Skin pigmentation

Question 7

Which type of water hardness is caused by dissolved calcium and magnesium bicarbonates that can be removed by boiling?

Accepted Answer

Temporary hardness

Answer

Permanent hardness

Answer

Mineral hardness

Answer

Chemical hardness