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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Two general models for the interconversion of inactive and active forms of a protein during cooperat Two general models for the interconversion of inactive and active forms of a protein during cooperat
Hill plots for oxygen binding to myoglobin and hemoglobin Hill plots for oxygen binding to myoglobin and hemoglobin
Macromolecules can have distinct binding sites for multiple ligands Macromolecules can have distinct binding sites for multiple ligands
Role of cooperativity of binding in regulation Role of cooperativity of binding in regulation
Oxygen-binding curve for myoglobin Oxygen-binding curve for myoglobin
Lac repressor protein binding. The crystal structural model of Lac repressor binding at lacO Lac repressor protein binding. The crystal structural model of Lac repressor binding at lacO
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

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