★ Circulatory System Quiz
. White blood cells produce ______, a kind of protein that destroys bacteria, viruses, and other invasive substances.
A. Enzymes
B. Hormones
C. Antibodies
D. Lipids
Select your answer:
Topics:
Male Reproductive System Communicable Diseases and Immune Response (OCR) The Nervous System Pathogens - Bacteria and Viruses Psychology Skin Structure and Growth Cell Diversity - Organization, Tissues, Plants and Animals Bones, Joints and Muscles Viruses Biomolecules Population Genetics Diabetes Mellitus First Aid Check up The Skeletal System Movement Nutritional TriviaOther quiz:
Food and Nutrition › ViewGood sources of protein are:
A. meat, fish and nuts
B. fruits and vegetables
C. pasta, potatoes and rice
D. fruit juices
Skel, Musc, Nerv, Circ, Resp › View
What are the main functions of the human skeleton?
A. exchange of gases
B. support and movement
C. sensing the environment
D. digestion and excretion