California State Barber Exam 2024/2025
Questions and Verified Detailed Answers
| Rated A+
Bacteriology is the study of the microorganisms called ____. - ✔✔bacteria
Bacteria that stimulate the immune response called ____. - ✔✔nonpathogenic
A barber should _____ if he sees changes in the clients skin - ✔✔suggest that
the client see a dermatologist
The main component of hair is a _____ called keratin - ✔✔protein
The part of the hair that extends above the skin surface is the _____ - ✔✔hair
shaft
The portion of the hair that is enclosed within the follicle is the _____ - ✔✔hair
root
The dermal papilla is surrounded by the ____. - ✔✔hair follicle
Hair's natural tendency to flow to one side is called the _____ - ✔✔hair stream
The arrector pili is a minute, _____ in the skin attached to the underside and
base of the hair follicle - ✔✔involuntary muscle fiber
The hair shaft consists of _____ main layers - ✔✔three
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
,Swelling the hair raises the _____ of the cuticle layer and opens the spaces
between them, allowing liquids to penetrate - ✔✔scales
Oxidation tints and other chemical hair products must have a pH _____ -
✔✔above 7.0
Hair that is missing the medulla is _____ - ✔✔naturally blond
Protein makes up _____ percent of hair - ✔✔91
The elements in human _____ are sulfur, carbon, oxygen, hydrogen, and
nitrogen. - ✔✔skin
The chemical composition of average hair is _____ percent carbon. - ✔✔51
_____ are made up of amino acids. - ✔✔proteins
Amino acids are joined _____ by peptide bonds. - ✔✔end-to-end
The strongest chemical bonds in the cortex are _____ bonds. - ✔✔peptide
In the _____, polypeptide chains are linked to each other by side bonds. -
✔✔cortex
_____ side bonds are easily broken by water or heat. - ✔✔hydrogen
Hydrogen bonds add _____ to the hair and keep parallel polypeptide chains
together. - ✔✔body
Spirilla are _____ shaped bacteria - ✔✔corkscrew
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©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, Tuberculosis is caused by the same type of bacteria as ____. - ✔✔Tetanus
Another name for the active stage of bacteria is the ____. - ✔✔vegetative
bacteria divided into two new cells during ____. - ✔✔mitosis
A pimple is a _____ infection - ✔✔local
A disease transmitted from one person to another is ____. - ✔✔contagious
Microorganisms that are resistant to antibiotics are ____. - ✔✔Viruses
Blood-borne pathogens cause ____. - ✔✔hepatitis
Uncovered sneezing in the barbershop ____. - ✔✔can spread disease
A scratch on the skin ____. - ✔✔can be a way for pathogens to enter the body
Sepsis is caused by ____. - ✔✔Pathogens in the bloodstream
Itching is a(n) ____ symptom. - ✔✔subjective
A fungus causes ____. - ✔✔ringworm
pediculosis is another name for ____. - ✔✔lice
A retrovirus ____. - ✔✔uses the reproductive processes of the host cell to
duplicate itself
Rinsing is not a ____. - ✔✔Level of decontamination
3|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
Questions and Verified Detailed Answers
| Rated A+
Bacteriology is the study of the microorganisms called ____. - ✔✔bacteria
Bacteria that stimulate the immune response called ____. - ✔✔nonpathogenic
A barber should _____ if he sees changes in the clients skin - ✔✔suggest that
the client see a dermatologist
The main component of hair is a _____ called keratin - ✔✔protein
The part of the hair that extends above the skin surface is the _____ - ✔✔hair
shaft
The portion of the hair that is enclosed within the follicle is the _____ - ✔✔hair
root
The dermal papilla is surrounded by the ____. - ✔✔hair follicle
Hair's natural tendency to flow to one side is called the _____ - ✔✔hair stream
The arrector pili is a minute, _____ in the skin attached to the underside and
base of the hair follicle - ✔✔involuntary muscle fiber
The hair shaft consists of _____ main layers - ✔✔three
1|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
,Swelling the hair raises the _____ of the cuticle layer and opens the spaces
between them, allowing liquids to penetrate - ✔✔scales
Oxidation tints and other chemical hair products must have a pH _____ -
✔✔above 7.0
Hair that is missing the medulla is _____ - ✔✔naturally blond
Protein makes up _____ percent of hair - ✔✔91
The elements in human _____ are sulfur, carbon, oxygen, hydrogen, and
nitrogen. - ✔✔skin
The chemical composition of average hair is _____ percent carbon. - ✔✔51
_____ are made up of amino acids. - ✔✔proteins
Amino acids are joined _____ by peptide bonds. - ✔✔end-to-end
The strongest chemical bonds in the cortex are _____ bonds. - ✔✔peptide
In the _____, polypeptide chains are linked to each other by side bonds. -
✔✔cortex
_____ side bonds are easily broken by water or heat. - ✔✔hydrogen
Hydrogen bonds add _____ to the hair and keep parallel polypeptide chains
together. - ✔✔body
Spirilla are _____ shaped bacteria - ✔✔corkscrew
2|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
, Tuberculosis is caused by the same type of bacteria as ____. - ✔✔Tetanus
Another name for the active stage of bacteria is the ____. - ✔✔vegetative
bacteria divided into two new cells during ____. - ✔✔mitosis
A pimple is a _____ infection - ✔✔local
A disease transmitted from one person to another is ____. - ✔✔contagious
Microorganisms that are resistant to antibiotics are ____. - ✔✔Viruses
Blood-borne pathogens cause ____. - ✔✔hepatitis
Uncovered sneezing in the barbershop ____. - ✔✔can spread disease
A scratch on the skin ____. - ✔✔can be a way for pathogens to enter the body
Sepsis is caused by ____. - ✔✔Pathogens in the bloodstream
Itching is a(n) ____ symptom. - ✔✔subjective
A fungus causes ____. - ✔✔ringworm
pediculosis is another name for ____. - ✔✔lice
A retrovirus ____. - ✔✔uses the reproductive processes of the host cell to
duplicate itself
Rinsing is not a ____. - ✔✔Level of decontamination
3|Page
©KERRYMARTIN 2025/2026. YEAR PUBLISHED 2025.
