Biology, 10.09.2019 00:10 blackopsty23
When a cell is in equilibrium with its environment, which of the following processes occurs for substances that can diffuse through the plasma membrane?
a) there is random movement of substances into and out of the cell.
b) all movement of molecules across the plasma membrane occurs by active transport.
c) there is directed movement of substances into and out of the cell.
d) there is no movement of substances into or out of the cell.
Answers: 3
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How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery
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When a cell is in equilibrium with its environment, which of the following processes occurs for subs...
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