Topics: Urinary System Quiz
With what can kidney be compared according to its function?
A. Sponge
B. Bean
C. Filter
D. Pelvis
Select your answer:

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HHB Immunology › Viewevents following a second exposure to an antigen
A. secondary immune response
B. self antigen
C. antibody
Cells › View
Which is a difference between frogs and bacteria?
A. Frogs are able to control all life processes in one cell, while bacteria cannot.
B. Frogs are single-celled organisms, while bacteria are multi-celled organisms.
C. Frogs are multi-celled organisms, while bacteria are single-celled organisms.
D. Frogs must rely on other single-celled organisms for survival, while bacteria are dependent only on themselves.