SATHEE: Exemplar Problems

Biology Problems

Exemplar Problems

Question:

What are the different types of movements exhibited by the cell of human Body?

Answer:

Cells in the human body exhibit various types of movements, which are essential for their functions and for overall bodily processes. Some of the different types of movements exhibited by human body cells include:

Amoeboid Movement: Certain cells, such as white blood cells (leukocytes), exhibit amoeboid movement. They extend pseudopodia (temporary projections of the cell membrane) to move, change shape, and engulf foreign particles like bacteria.
Muscle Contraction: Muscle cells, known as muscle fibers, are specialized for contraction. When they contract, they generate force, leading to movements such as skeletal muscle contractions (for voluntary movement), cardiac muscle contractions (for heartbeats), and smooth muscle contractions (for involuntary functions like digestion).
Ciliary Movement: Cells in the respiratory tract and the fallopian tubes are equipped with cilia, tiny hair-like structures. Ciliary movement involves coordinated, rhythmic beating of cilia to move mucus, dust particles, or reproductive cells (e.g., eggs) through specific pathways.
Flagellar Movement: Sperm cells in the human body exhibit flagellar movement. They have a long, whip-like flagellum that propels them forward through fluid environments to reach and fertilize an egg.
Cell Crawling: During processes like wound healing and immune responses, certain cells, including fibroblasts and macrophages, employ cell crawling. They move by extending and retracting protrusions, allowing them to migrate toward specific destinations.
Microvilli Movement: Microvilli are small, finger-like projections on the surface of some cells, particularly in the intestines. While not involved in long-range movement, microvilli play a role in increasing the surface area for absorption and secretion processes.
Neuronal Axonal Transport: Neurons have long extensions called axons. Within axons, various materials and organelles need to be transported to and from the cell body. This movement is facilitated by molecular motors along the cytoskeletal tracks.
Chemotaxis: Some cells exhibit chemotaxis, a directed movement in response to chemical signals. For example, immune cells are attracted to sites of infection by following chemical gradients produced by pathogens.
Phagocytosis: Phagocytic cells, such as macrophages and neutrophils, exhibit movement by surrounding and engulfing particles like bacteria or cellular debris through a process called phagocytosis.
Microbial Movement: The human body is home to trillions of microorganisms, including bacteria and protists. Some of these microorganisms may exhibit various forms of movement, such as swimming or gliding.

These diverse types of cell movements are crucial for physiological processes like immune response, tissue repair, organ function, and overall homeostasis within the human body.

Biology Problems

Exemplar Problems

Question:

Answer:

Table of Contents

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Mentorship

Biology Problems

Exemplar Problems

Question:

Answer:

Table of Contents

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Mentorship

Menu