Phagocytosis, or “cell eating”, is the process by which a cell engulfs a particle and digests it. The word phagocytosis comes from the Greek phago-, meaning “devouring”, and -cyte, meaning “cell”.

Phagocytosis. Solid particles are engulfed by phagocytosis (“cell eating”), a process that begins when solids make contact with the outer cell surface, triggering the movement of the membrane.

A variation of endocytosis is called pinocytosis. This literally means “cell drinking” and was named at a time when the assumption was that the cell was purposefully taking in extracellular fluid.

We need to eat and drink to survive, and so do our cells. Using a process called endocytosis, cells ingest nutrients, fluids, proteins and other molecules.

They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves. Cells have many parts, each with a different function.

During pinocytosis, the cell membrane folds inward, forming a small pocket (vesicle) around fluid that is directly outside the cell membrane; the fluids consumed by cells may contain small molecules, such as lipids. …

There are two types of endocytosis: phagocytosis and pinocytosis. Phagocytosis, also known as cell eating, is the process by which cells internalize large particles or cells, like damaged cells and bacteria.

Terms in this set (6)

• Endocytosis Step 1. The cell comes into contact with a particle.
• Endocytosis Step 2. The cell membrane begins to wrap around the partile.
• Endocytosis Step 3. Once the particle is completely surrounded, a vesicle pinches off.
• Exocytosis Step 1.
• Exocytosis Step 2.
• Exocytosis Step 3.

There are two main types of active transport:

• Primary (direct) active transport – Involves the direct use of metabolic energy (e.g. ATP hydrolysis) to mediate transport.
• Secondary (indirect) active transport – Involves coupling the molecule with another moving along an electrochemical gradient.

There are two major types of cell transport: passive transport and active transport. Passive transport requires no energy. It occurs when substances move from areas of higher to lower concentration. Types of passive transport include simple diffusion, osmosis, and facilitated diffusion.

Examples of Passive Transport

• simple diffusion.
• facilitated diffusion.
• filtration.
• osmosis.

Three common types of passive transport include simple diffusion, osmosis, and facilitated diffusion.

In Passive transport, the molecules are moved within and across the cell membrane and thus transporting it through the concentration gradient, without using ATP (energy). Active transport requires cellular energy. Passive transport does not require any cellular energy.

Simple diffusion and osmosis are both forms of passive transport and require none of the cell’s ATP energy.

A tea bag immersed in a cup of hot water will diffuse into the water and change its colour. A spray of perfume or room freshener will get diffused into the air by which we can sense the odour. Sugar gets dissolved evenly and sweetens the water without having to stir it.