A capillary tube is used to acquire a small blood sample for CBC (complete blood count) analysis. Suction is not required to transfer the blood from the fingertip prick to the tube in part due to

A. covalent bonding between the water molecules.
B. adhesive forces between the water molecules and the glass particles of the tube.
C. ionic bonding between the water molecules.
D. cohesive forces between the glass particles of the tube and the water molecules.


Answer: B

Biology & Microbiology

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