Table of Contents
What is a stem cell short answer?
Stem cells are special human cells that are able to develop into many different cell types. This can range from muscle cells to brain cells. In some cases, they can also fix damaged tissues.
What are stem cells Class 12?
A stem cell is a divisive cell that can divide to produce other reproductive cells that continue to function as stem cells and other cells intended for differentiation. Stem cells are a continuous source of various cells that make up the tissues and organs of animals and plants.
What are the 4 types of cells?
- Epithelial Cells. These cells are tightly attached to one another. …
- Nerve Cells. These cells are specialized for communication. …
- Muscle Cells. These cells are specialized for contraction. …
- Connective Tissue Cells.
What are stem cells Class 10?
“Stem cells are special human cells that can develop into many different types of cells, from muscle cells to brain cells.”
What is stem cell in one word?
A stem cell is a type of cell that can produce other cells which are able to develop into any kind of cell in the body. Stem-cell research is supported by many doctors.
What is stem cell topper?
Stem cells are the specialized type of cells. These are the undifferentiated form of cells. These cells divide and can form different type of differentiated cells which perform different functions. The embryonic stem cells give rise to the different tissues in an individual.
What are stem cells definition for kids?
Stem cells are cells that can develop into many different types of cells. The stem cells used for transplants form blood cells. They become: red blood cells that carry oxygen. white blood cells that fight infection.
Why is stem cells?
Stem cells do two things that no other cells can do: They continuously renew and divide to make exact replicas of themselves. Typical or normal cells multiply and divide, but they have limited lifespans. They’re the only cells that make specialized (differentiated) cells to replenish or repair specific cell types.
What are 2 main types of cells?
Groups of specialized cells are organized into tissues and organs in multicellular organisms such as higher plants and animals. There are two distinct types of cells: prokaryotic cells and eukaryotic cells.
Who invented cell?
Cell was discovered by a British scientist, Robert Hooke in 1665. He observed cells in a cork slice under his self-designed microscope and noticed honeycomb like compartments.
What is a human cell?
What is a cell? A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks.
What is the bone marrow?
Bone marrow is the soft, spongy tissue that is in the medullary cavities (centers) of bones. Healthy bone marrow is an essential part of the body, as it contains stem cells that produce blood cells and the cells that make up the immune system.
What is a stem cell PDF?
Page 2. 1. Stem Cells. Stem cells are unspecialized and capable of dividing and renewing themselves for long periods through cell division. In addition, they can give rise to specialized cell types through differentiation.
What is the stem class 11 biology?
The stem is the aerial part of the plant and it possesses leaves, fruits, branches, and flowers. The stem is positively phototropic and negatively geotropic. The leaves contain chlorophyll so that plants can make food. The stem possesses nodes and internodes.
Why is a stem cell?
Stem cells are special cells produced by bone marrow (a spongy tissue found in the centre of some bones) that can turn into different types of blood cells. The 3 main types of blood cell they can become are: red blood cells – which carry oxygen around the body. white blood cells – which help fight infection.
Why are stem cells called?
The term stem cell originated in the context of two major embryological questions of that time: the continuity of the germ-plasm and the origin of the hematopoietic system. Theodor Boveri and Valentin Häcker used the term stem cell to describe cells committed to give rise to the germline.
What are stem cells examples?
Hematopoietic Stem Cells (Blood Stem Cells) Mesenchymal Stem Cells. Neural Stem Cells. Epithelial Stem Cells.
What is a stem cell GCSE answer?
Cells at the early stages in the development of the embryo are stem cells. If cells are removed from the embryo – called embryonic stem cells. – they will differentiate into any cell type. Some stem cells remain in the bodies of adults – adult stem cells.