★ Respiratory System Quiz
What happens when your diaphragm relaxes and moves upward?
A. Your lungs deflate and you breathe out.
B. Your lungs inflate and you breathe in.
C. Your alveoli transfer oxygen to your bloodstream.
D. Your bloodstream transfers carbon dioxide to your alveoli.
Select your answer:
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Blood clotting › ViewThrombin, in turn, catalyzes the conversion of the soluble protein fibrin to fibrinogen, which serves as a net that traps blood cells
A. TRUE
B. FALSE
Microbiology › View
What is the purpose of sealing the lid onto the petri dish with sellotape?
A. To allow oxygen to flow in
B. To keep the bacteria from escaping
C. To prevent condensation on the lid
D. To prevent the growth of bacteria