★ Biotechnology Quiz
Which animals possess a thymus and a spleen as part of their immune system?
A. Sharks and rays
B. Birds and reptiles
C. Amphibians and insects
D. Mammals and fish
Select your answer:

Topics:
How the Eyes work Medicinal use of Microorganisims Human Excretory System Mutations Blood/Lymphatic/Immune Bonding and the Periodic Table Pediatric Cardiology Metabolic Sauver Cell Injury Anatomy - Muscle Histology/NMJ/Physiology Thyroid Disease First Aid Check up Sense of Sight Biocomposite Blood and BonesOther quiz:
Circulatory System › ViewWhich two chambers of the heart pump blood to the body?
A. left auricle and left ventricle
B. left ventricle and right auricle
C. right ventricle and left ventricle
D. right auricle and left auricle
Bacteria and Viruses › View
A vaccine triggers your body to produce _____________ which help fight infections.
A. antibiotics
B. antibodies
C. antigens