Cosmetology Test Scientific Concepts 2

Question 1

Which type of chemical bond is broken when hair is permanently waved?

Accepted Answer

Disulfide bonds

Answer

Hydrogen bonds

Answer

Salt bonds

Answer

Peptide bonds

Question 2

What is the pH range considered neutral on the pH scale?

Accepted Answer

7

Answer

0

Answer

14

Answer

4.5–5.5

Question 3

Which layer of the hair is responsible for its strength and elasticity?

Accepted Answer

Cortex

Answer

Cuticle

Answer

Medulla

Answer

Epicuticle

Question 4

What type of reaction occurs when an oxidizing agent is applied to hair during color processing?

Accepted Answer

Oxidation

Answer

Reduction

Answer

Neutralization

Answer

Hydrolysis

Question 5

Sebum is produced by which gland in the skin?

Accepted Answer

Sebaceous gland

Answer

Sudoriferous gland

Answer

Apocrine gland

Answer

Eccrine gland

Question 6

What is the term for the process by which cells divide and reproduce?

Accepted Answer

Mitosis

Answer

Osmosis

Answer

Metabolism

Answer

Diffusion

Question 7

Which element is the primary component of all organic chemical compounds found in cosmetics?

Accepted Answer

Carbon

Answer

Nitrogen

Answer

Oxygen

Answer

Hydrogen