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tino4ka555 [31]
3 years ago
14

Which scientist confirmed that all cells must come from pre-existing cells?​

Biology
1 answer:
denis23 [38]3 years ago
8 0

rudolf virchow concluded that all cells must come from pre-existing cells?​

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Which specialized cells are created from stem cells? Check all that apply.
vampirchik [111]
<h2>Answer:</h2>

I believe the correct answer is all of the cells.

<h2>Explanation:</h2>

All cells usually arise from stem cells. Stem cells have the ability to reproduce, differentiate or specialize into specific stem cells. There are multipotent, totipotent and pluripotent types of stem cells that give rise to specific types of cells.

<h2>Further Explanation:</h2><h3>1. Red and White blood cells:</h3>

These are essential blood cells confined to blood vessels and tissues. Red blood cells (Erythrocytes) function to carry oxygen to tissues and carbondioxide away from tissues while white blood cells (leukocytes) function as defensive barries protecting the body from infections and any type of foreign/pathogenic material. They have multipotent stem cells called multipotent haematopoietic stem cells that further specialize into the common myeloid progenitor and the common lymphoid progenitor. The common myeloid progenitor differentiates into the megakaryocytes that form platelets, erythrocytes (red blood cells), mast cells and myelocytes ( white blood cells that have granules in them i.e. basophils, neutrophils, eosinophuls and monocytes). The common lymphoid progenitor forms lymphocytes which are small types of white blood cells that fight cancers and viruses. Cancers can cause stem cells of specific cells to multiply uncontrollably or suppress the production of specific cells causing adverse health issues.

<h3>2. Muscle cells:</h3>

Muscle cells grow from stem cell precursors depending on their type. There are skeletal muscles (muscles that support bones in their functions), smooth muscles( found in organs such as the lungs) and cardiac muscles (specific only to the heart). Skeletal muscle stem cells are called satellite cells, while cardiac and smooth muscles arise from the cardiac neural crest stem cell.

<h3>3. Neurons</h3>

Neurons are specialized cells for communication in the body and include neurons found in the central nervous system and the peripheral nervous system and glial cells that provide support for them. They arise from the neural stem cells to form common progenitors differentiating into neurons and glial cells.

<h3>4. Epithelial cells</h3>

They are part of the most abundant cells in the body. They populate every organ surface in the body. They arise from the epithelial stem cells forming different types of epithelial cells in regards to the surface they are found. e.g. Keratinized epithelial cells are found in openings and surfaces of the body i.e. the eyes, skin, vagina, mouth and ear canals while non-keratinized are found in internal hollow surfaces such as the lungs, spleen, liver, kidneys.

Level: High School

7 0
3 years ago
Read 2 more answers
N 1966, american biologist lynn margulis proposed the theory of endosymbiosis, or the idea that mitochondria are the descendants
Mariulka [41]
Endosymbiosis theory claims that aerobic bacteria were taken to the inner side of aerobic cells through the endophagocytosis. Half-digested food molecules are what aerobic bacteria feeds on in the cells of cytoplasm and it receives a high amount of energy and in turn, it benefits the host cell.
Now that both organisms have benefited, they form an endosymbiotic relationship together with the bacteria which evolves into organelles. For example chloroplasts and mitochondria and aerobic cells which are evolved in the eukaryotic cells. Endosymbiosis in important in the life of earth. For example, through endosymbiosis, we have a development of chloroplasts which leads to oxygenation of earth's atmosphere and allows evolution for more complex oxygen for organisms which are breathing, for example, human organisms which are being classified in the same genus, order with DNA sequence and family.
Some observation makes scientist conclude that prokaryotic organisms which are living in the cell of other organisms which are which are evolved from plastids and mitochondria.
3 0
3 years ago
What word describes a microscope that remains in focus when the objective lenses are changed?
Vilka [71]

Answer;

-Parfocal

Parfocal is the word that describes a microscope that remains in focus when the objective lenses are changed.

Explanation;

Parfocal means that when one objective lens is in focus, then the other objectives will also be in focus.

Parfocalling compound microscope objectives is a procedure which allows one to adjust each objective lens so that it will remain in relative focus with the other objective lenses on the microscope when switching from one magnifcation to the next.

4 0
3 years ago
Read 2 more answers
How are elements related to the Earth's crust?
CaHeK987 [17]
The Earth's crust comprises about 95% igneous and metamorphic rocks, 4% shale, 0.75% sandstone, and 0.25% limestone. Oxygen, silicon, aluminum, and iron account for 88.1% of the mass of the Earth's crust, while another 90 elements make up the remaining 11.9%.
4 0
2 years ago
JOCUL WUOSI SWOIIUM USLUN
insens350 [35]

Answer:

A. Time and space

Explanation:

A body is a particular amount of matter. it can be solid,liquid or gas. It can be described as existing in Time and space.

Brainllst please

7 0
3 years ago
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