Amoeboid Movement
Movement involving pseudopodia formation, characteristic of macrophages and leucocytes.
What is Amoeboid Movement?
A type of cell locomotion in which the cell moves by means of temporary extensions of the cytoplasm called pseudopodia.
Key points
- Define amoeboid movement and identify cells exhibiting it.
- Explain the mechanism involving pseudopodia formation.
- Describe the role of the cytoskeleton (actin) in this process.
- Understand its significance in biological functions like phagocytosis.
Common exam trap
Confusing pseudopodia with permanent structures.
Definitions
- Term
Amoeboid Movement
- Meaning
A type of cell locomotion in which the cell moves by means of temporary extensions of the cytoplasm called pseudopodia.
- Term
Pseudopodia
- Meaning
Temporary, irregular, lobe-like or finger-like projections of the cytoplasm of a cell, used for locomotion and engulfing food particles.
- Term
Cytoskeleton
- Meaning
A network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.
- Term
Phagocytosis
- Meaning
The process by which certain living cells called phagocytes ingest or engulf other cells or particles.
Learning objectives
Define amoeboid movement and identify cells exhibiting it.
Explain the mechanism involving pseudopodia formation.
Describe the role of the cytoskeleton (actin) in this process.
Understand its significance in biological functions like phagocytosis.
Differentiate it from other types of cellular movement.
Prerequisites
Cell structure and organelles (plasma membrane, cytoplasm, cytoskeleton).
Basic understanding of cell division and movement.
Introduction to muscle contraction (actin and myosin).
Common mistakes
Confusing pseudopodia with permanent structures.
Underestimating the role of the cytoskeleton.
Not recognizing the energy requirement.
Assuming it's only for single-celled organisms.
Practice preview
Which of the following cellular structures is primarily responsible for amoeboid movement?…
easy
Which of the following human cells primarily exhibit amoeboid movement?…
easy
How does the sol-gel transformation of cytoplasm contribute to amoeboid movement?…
medium