Topics: Soldiers of Defense Quiz
The secretion of mouth that help to defend pathogens
A. Wax
B. Lysosome
C. HCl
D. Mucus
Select your answer:

Topics:
How the Eyes work Hospital Unit Pathophysiology - Inflammation Biochemistry: Carbohydrates and Lipids Food for Thought Cardio and Resp Disorders Laboratory Careers Neurology Enzymes and ATP Structure Respiratory Renal Circulatory and Nervous System Biomedical Cartilage Body Systems and Medical SciencesOther quiz:
Excretory System › ViewKidneys create a liquid called:
A. Urine
B. Blood
C. Faeces
D. Carbon Dioxide
Ecology › View
Which of these is an example of natural selection?
A. The largest animal in a population will have more opportunities for reproduction.
B. Several species of organisms work together so that they all succeed.
C. One species takes all the resources in an environment leaving none for others.
D. Organism that are best suited to an environment tend to survive and reproduce more often.