Cells with high energy demands are likely to undertake which form of glucose transport?

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Starting with the core idea, the question asks which form of glucose transport is typical for cells that have high energy needs.
Option 1: Active or secondary active transport. This is the correct choice because cells with high energy demands rely on ATP-powered transporters (primary active transport) or transporters that couple movement to another gradient (secondary active transport) to move glucose against its concentration gradient or to accumulate it efficiently. For example, GLUT transporters can mediate facilitated diffusion, but in cells with high energy needs, active transport mechanisms are used to concentrate glucose or to drive uptake in energetically demanding contexts via coupling to Na+ gradients or ATP hydrolysis.
Option 2: Phagocytosis. Phagocytosis is a form of bulk cell ingestion for large particles, not a mechanism for transporting glucose across the plasma membrane. It is unrelated to the specific transport of a small sugar molecule like glucose.
Option 3: Sodium ion antiportation. While Na+–glucose cotransport (a form of secondary active transport) exists in certain tissues (like the intestinal epithelium and some renal segments), the label “sodium ion antiportation” itself denotes a mechanism that exchanges ions in opposite directions and does not specifically describe glucose transport. It could be misleading if interpreted as the sole means of glucose transport in all high-demand cells.
Option 4: Passive diffusion down the concentration gradient. Glucose is a polar molecule with limited membrane permeability, so passive diffusion is inefficient for transporting glucose into cells, especially when rapid or substantial uptake is required to meet energy demands. High-energy-demand cells typically rely on energy-dependent transport rather than relying on passive diffusion.

AGRI10050_2025_SM1 Exam: Agricultural Systems Biology (AGRI10050_2025_SM1)- Requires Respondus LockDown Browser

Cells with high energy demands are likely to undertake which form of glucose transport?

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AGRI10050_2025_SM1 Exam: Agricultural Systems Biology (AGRI10050_2025_SM1)- Requires Respondus LockDown Browser

Cells with high energy demands are likely to undertake which form of glucose transport?

View Explanation

Log in for full answers

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