Topics: Pathogens, Disease and Immunity Quiz
Which type of external defense is not considered a ‘first line defense’.
A. Lymphatic Organs
B. Tears
C. Saliva
D. Skin (epithelial cells)
E. Mucous and cilia
Select your answer:

Topics:
Eco Factors & Bacteria Terms and Definitions - Diseases Beneath the Skin Obesity Wellness Vocabulary Ecology & Organisms Cell Diversity - Organization, Tissues, Plants and Animals Food Coronary Heart Diseases Fainting and Nosebleed Diet Renal and Gastrointestinal System Pollution Physical Education and Health Circulatory & RespiratoryOther quiz:
Cell Structure and Function Concept › ViewWhat are the components of the cell membrane?
A. Phospholipids and proteins
B. Nucleotides and enzymes
C. Nucleic acids and carbohydrates
D. Amino acids and lipids
Nutrition › View
One half of your plate should be
A. Protein
B. Dairy
C. Grains
D. Fruits and Vegetables