Unit Test on Hair

Front

The protein that makes up hair is called _____

Back

keratin

Front

The deepest layer of hair (compared to the lead of a pencil) is the ___

Back

medulla

Front

What is a hair follicle?

Back

The actively growing root or base of hair containing DNA and living cells.

Front

The middle layer of a hair (compared to the wood of a pencil) is the __

Back

cortex

Front

What is the medulla in hair structure?

Back

The central core of a hair fiber.

Front

What is the cuticle in hair structure?

Back

The tough outer covering of a hair composed of overlapping scales.

Front

What is the cortex in hair structure?

Back

The middle layer of hair that contains fibrous proteins and pigments.

Front

What role does keratin play in hair?

Back

Keratin is a fibrous protein that provides strength and structure to hair.

Front

How does the structure of hair contribute to its function?

Back

The layered structure (cuticle, cortex, medulla) protects hair and contributes to its strength and flexibility.

Front

What is the significance of hair follicles?

Back

Hair follicles are essential for hair growth and contain living cells and DNA.