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Title: Primary and secondary active transport, and passive transport? Post by: nickname on Nov 4, 2010 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! Title: Re: Primary and secondary active transport, and passive transport? Post by: bio_man on Nov 4, 2010 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 True... b) glucose transporter of erythrocytes: passive and conc gradient of transported solute True... c) amino-acid-Na+ trasporter of kidney cells: secondary active trans. and conc gradient of cotransported ion. True... d) the glucose-Na+ transporter of epithelial cells: secondary active trans. and conc gradient of cotransported ion. True... e) the Ca2+ ATPase of the sarcoplasmic reticulum: primary active trans and chemical reaction True... Good Job! :-X |