Primary and secondary active transport, and passive transport?

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SUMMARY

The discussion focuses on the classification of transport mechanisms in cellular biology, specifically identifying primary active transport, secondary active transport, and passive transport. The Na+/K+ ATPase of plasma membranes and the Ca2+ ATPase of the sarcoplasmic reticulum are confirmed as primary active transport mechanisms utilizing a chemical reaction for energy. The glucose transporter of erythrocytes is classified as passive transport relying on the concentration gradient of the transported solute. Both the amino-acid-Na+ transporter of kidney cells and the glucose-Na+ transporter of epithelial cells are identified as secondary active transport mechanisms, dependent on the concentration gradient of cotransported ions.

PREREQUISITES
  • Understanding of primary and secondary active transport mechanisms
  • Knowledge of passive transport principles
  • Familiarity with the Na+/K+ ATPase and Ca2+ ATPase functions
  • Concept of concentration gradients in cellular transport
NEXT STEPS
  • Study the mechanisms of Na+/K+ ATPase in detail
  • Explore the role of glucose transporters in erythrocytes
  • Investigate secondary active transport in renal physiology
  • Learn about the function of Ca2+ ATPase in muscle contraction
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Students and professionals in cellular biology, biochemistry, and physiology who seek to deepen their understanding of transport mechanisms across cell membranes.

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I have to identify whether the following are primary active transport, secondary active transport, or passive transport. Then I have to decide what is the energy source: a chemical reaction, concentration gradient of cotransported ion, or conc gradient of transported solute.

Below are my answers, but I don't know if they are right. Thank you so much for ur help!

a) Na+/K+ ATPase of plasma membranes: primary active trans. and chemical reaction

b) glucose transporter of erythrocytes: passive and conc gradient of transported solute

c) amino-acid-Na+ trasporter of kidney cells: secondary active trans. and conc gradient of cotransported ion.

d) the glucose-Na+ transporter of epithelial cells: secondary active trans. and conc gradient of cotransported ion.

e) the Ca2+ ATPase of the sarcoplasmic reticulum: primary active trans and chemical reaction

Thank you again!
 
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These all look fine.
 

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