The process by which a unicellular organism takes in food is known as **phagocytosis**. Here’s a brief explanation of each term:

1. **Exocytosis**: This is the process by which substances are expelled from a cell. It involves vesicles fusing with the plasma membrane to release their contents outside the cell.

2. **Phagocytosis**: This is a form of endocytosis where large particles, such as food particles or other cells, are engulfed by the cell. The cell membrane extends around the particle and encloses it in a vesicle, which then fuses with a lysosome for digestion.

3. **Pinocytosis**: Often referred to as "cell drinking," this is the process by which a cell takes in liquid. The cell membrane invaginates, and small amounts of extracellular fluid are engulfed in vesicles.

Therefore, the correct answer is **phagocytosis**.

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The process by which a unicellular organism takes in food is known as **phagocytosis**. Here’s a brief explanation of each term:

1. **Exocytosis**: This is the process by which substances are expelled from a cell. It involves vesicles fusing with the plasma membrane to release their contents outside the cell.

2. **Phagocytosis**: This is a form of endocytosis where large particles, such as food particles or other cells, are engulfed by the cell. The cell membrane extends around the particle and encloses it in a vesicle, which then fuses with a lysosome for digestion.

3. **Pinocytosis**: Often referred to as "cell drinking," this is the process by which a cell takes in liquid. The cell membrane invaginates, and small amounts of extracellular fluid are engulfed in vesicles.

Therefore, the correct answer is **phagocytosis**.

Knowee AI · Accepted Answer

The process by which a unicellular organism takes in food is known as **phagocytosis**. Here’s a brief explanation of each term:

1. **Exocytosis**: This is the process by which substances are expelled from a cell. It involves vesicles fusing with the plasma membrane to release their contents outside the cell.

2. **Phagocytosis**: This is a form of endocytosis where large particles, such as food particles or other cells, are engulfed by the cell. The cell membrane extends around the particle and encloses it in a vesicle, which then fuses with a lysosome for digestion.

3. **Pinocytosis**: Often referred to as "cell drinking," this is the process by which a cell takes in liquid. The cell membrane invaginates, and small amounts of extracellular fluid are engulfed in vesicles.

Therefore, the correct answer is **phagocytosis**.

Process but which an unicellular organism takes its food:exocytosisphagocytosispinocytosis

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