★ Skin Growth Quiz
The tiny grains of pigment deposited in cells that provide skin with its color are:
A. keratin
B. protein
C. melanin
D. collagen
Select your answer:
Topics:
Cancer & Cell Cycle HFT Vitamins Tissues Vet Science Terms The Cell Skills for Health Skeletal System Homeostatic Imbalances Diseases of The Body Systems Sense of Sight ology & phobia Ankle Injuries Anxiety Disorders Integumentary and Musculoskeletal System The Blood Muscular System NCHSE Body DefenseOther quiz:
Bio Cells › ViewIdentify the main structural difference between plant and animal cells.
A. Plant cells have a cell wall, while animal cells do not.
B. Animal cells have chloroplasts, while plant cells do not.
C. Plant cells have mitochondria, while animal cells do not.
D. Animal cells have a cell wall, while plant cells do not.
Human Body › View
It serves as one of our primary defense against pathogenic organisms and other organisms that can cause various diseases.
A. heart
B. liver
C. muscles
D. integument