Cosmetology Test Scientific Concepts 3

Question 1

What happens to the hair cuticle when exposed to an alkaline solution?

Accepted Answer

It swells and opens

Answer

It contracts and closes

Answer

It dissolves completely

Answer

It hardens and strengthens

Question 2

Which type of electricity flows in one direction only and is used in galvanic current treatments?

Accepted Answer

Direct current (DC)

Answer

Alternating current (AC)

Answer

Static electricity

Answer

Tesla current

Question 3

What is the scientific term for the outermost layer of the skin?

Accepted Answer

Epidermis

Answer

Dermis

Answer

Hypodermis

Answer

Stratum spinosum

Question 4

A client's hair has low porosity. What does this indicate about the cuticle?

Accepted Answer

The cuticle is tightly closed and resists moisture

Answer

The cuticle is raised and damaged

Answer

The cuticle is absent

Answer

The cuticle is extremely porous

Question 5

What is the name of the protein that makes up approximately 90% of the hair shaft?

Accepted Answer

Keratin

Answer

Collagen

Answer

Elastin

Answer

Melanin

Question 6

Which law of color states that all colors are created from three primary colors?

Accepted Answer

Law of color theory

Answer

Law of reflection

Answer

Law of absorption

Answer

Law of refraction

Question 7

What type of chemical reaction produces heat as a byproduct, such as during exothermic relaxer application?

Accepted Answer

Exothermic reaction

Answer

Endothermic reaction

Answer

Neutralization reaction

Answer

Photochemical reaction