★ Ecology Quiz
If an organism has a vestigial structure, that structure likely once had a function in a(n)
A. close relative
B. early ancestor
C. unrelated organism
D. embryological stage
Select your answer:
Topics:
Skeletal Muscle Anatomy Health and Medicine Biomedical Cell Transport Embryology Environment Type 1 Diabetes Urinary Cell Bio Blood Formation and Clotting Clinical Pathology SPED Law-lympics Conjunctivita Diet Mnt For Pulmonary Disease and Adverse Reactions to FoodOther quiz:
Special Senses › ViewWhen you cry and your nose runs, what fluid is coming through your nose?
A. Tears
B. Cerebrospinal fluid
C. Aqueous humor
D. Mucus
Disease & Immunity › View
What is the best definition of antibodies?
A. antibiotics that help you when you are sick
B. organs that create pathogens
C. pathogens that enter the bloodstream
D. proteins that attach to antigens and make them useless