What is the function of amino acids?

• they boost the growth phase

• form the building blocks of protein

• joins with a sulfur atom creating two peptide strands

• disrupt the formation of the building blocks of protein

where is the hair bulb found?

• the outermost layer

• the innermost layer

• at the base of the follicle

• the ends of the hair

what is the definition of the dermal papilla

• also known as the growth phase; new hair is produced.

• fibrous protein layer of the hair responsible for strength, elasticity, and color of hair.

• amino acid with a sulfur (s) atom that joins together two peptide strands

• cone-shaped elevation found at the base of the bulb

what is also known as the catagen phase?

• the resting phase

• the growth phase

• the transition phase

• the starting phase

____ layer of hair; formed from cells that resemble shingles on a roof; protects cortex.

• innermost

• middle

• outermost

• deep

what does eumelanin consist of?

• yellow and red pigment only

• brown and black pigment

• black pigment only

• brown and red pigment only

what are the elements that make up human hair, skin, tissue, and nails.

• carbon, oxygen, hydrogen, nitrogen, and sulfur

• hydrogen, dioxide, and nitrogen

• carbon, oxygen, nitrogen, and sulfur

• sulfur, oxygen, hydrogen, and carbon

in what direction do cowlicks grow in

• straight down or same angle than other hair

• straight up or at a different angle than other hair

Amino acid with a sulfur (s) atom that joins together two __ strands

fibrous protein layer of the hair; responsible for the ____, ____, and color of hair.