Examlex
The first ionization constant Ka1 is always smaller than the second ionization constant Ka2 for the ionization of a diprotic acid.
Actin
A protein that is essential for the contraction of muscle cells and plays a role in various types of cell movement and structure.
Blood
A vital bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away.
Cartilage
A flexible, connective tissue found in various forms in the larynx and respiratory tract, joints, and ear.
Nerve
A bundle of fibers that transmits electrical impulses toward and away from the brain and central nervous system.
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