What Process Best Characterizes Ca²⁺ Movement from the Cytosol (Low

question 48

Multiple Choice

What process best characterizes Ca²⁺ movement from the cytosol (low Ca²⁺ concentration) into the endoplasmic reticulum (high Ca²⁺ concentration) ?

• A)Calcium movement is spontaneous.
• B)Calcium movement involves active transport.
• C)Calcium movement occurs by facilitated diffusion using a transporter protein.
• D)Calcium movement does not require energy.
• E)Calcium movement occurs by passive diffusion.

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