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Exception to "every cell came from another cell": The first cell ever.
(Controversial) exception to "a cell is the smallest unit of life"/"all life is made of cells": viral matter.
Hope this helps!
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoAccording to wikipedia there are three. They are:
- Viruses are considered alive by some, yet they are not made up of cells. Viruses have many features of life, but by definition of the cell theory, they are not alive.
- The first cell did not originate from a pre-existing cell. There was no exact first cell since the definition of cell is imprecise.
- Mitochondria and chloroplasts have their own genetic material, and reproduce independently from the rest of the cell.
Wiki User
∙ 9y agoThree exceptions to the cell theory are viruses, mitochondria, chloroplasts, and where did the first cell come from. Viruses carry on life processes but need to replication inside a host cell. The mitochondria and chloroplast have their own genetic material and can reproduce independently within a cell.
Wiki User
∙ 9y agoViruses mitochondria and chloroplast are exceptions to the cell theory. Their genetic material allows them to reproduce independently within a cell.
Wiki User
∙ 11y agoMitochondria and chloroplasts contain genetic material and can replicate
Wiki User
∙ 11y agoI don't know. What is the exceptions of the cell theory?
69 (.)(.) please call 911
Wiki User
∙ 11y agoBlood cells are an exception, I think it's because they have no nucleus? We watched a video on it in class.i don't exactly remember, I fell asleep.
Wiki User
∙ 11y agomitochondria and chloroplasts contain genetic material and can replicate.
Wiki User
∙ 6y agom
Wiki User
∙ 13y agoa virus
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Who wrote the first two parts of cell theory?
Theodor Schwann wrote the first two parts of the cell theory
Who was the first to describe the cell theory?
Two scientists came up with The Cell Theory. It was in 1839, Matthias Schleidan and Theodor Schwann, two German Biologists came up with this theory.
Which of these scientists did not make a major contribution to cell theory schleiden schawnn mendel virchow?
Well, it is a critical question, but still the answer exist,, Rudolf Virchow has given the best contribution among the four to the cell theory... He developed the theory given by Theodor schawnn.... and the other two did not contribut much in this.....Have a good day!! :)
Which two structures above in the diagramof the cellwould allow an observer to identify it as an plant cell?
I can start work on that question as soon as you show me the diagram.
Summary of scientists observations conclusions about cells?
Well I'll just use two points from the cell theory: 1) The cell is the basic unit of structure and function in all living things. In the late 1800s, a scientist named Schwann told the world that he observed cells in animals. A short time later, another scientist named Schleiden said the same for plants. This was a huge start to the cell theory. 2) All cells rise from pre-existing cells. It's hard to believe but at one point actual scientists believed that living things could come from inorganic matter. It was not until Louis Pasteur's experiment with the S-shaped flask, and the boiled water, that people started to shun the thought of spontaneous generation and look at this final addition to the cell theory.
Who wrote the first two parts of cell theory?
Theodor Schwann wrote the first two parts of the cell theory
Who gave cell theory?
The cell theory was introduced by two biologists, Schleidan and Schwann
Who was the first to describe the cell theory?
Two scientists came up with The Cell Theory. It was in 1839, Matthias Schleidan and Theodor Schwann, two German Biologists came up with this theory.
Which organelle enables you recognize or identify the cell as a plant or an animal cell?
There are two things. The organelle is the chloroplast, but there is also a cell wall.
Who were the first two scientist to propose the cell theory?
Schleiden and Schwann
Who developed the cell theory of life?
Credit for developing cell theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. In 1839, Schwann and Schleiden suggested that cells were the basic unit of life. Their theory accepted the first two tenets of modern cell theory. However, the cell theory of Schleiden differed from modern cell theory in that it proposed a method of spontaneous crystallization that he called "free cell formation".
What are the types of exception in java?
Exceptions are of two types: checked exceptions and unchecked exceptions.
What two people discovered cell theory?
Ludolph Christian Treviranus and Johann Jacob Paul Moldenhawer are credited for the formulation of Cell theory.
Analyze the three parts of the cell theory and describe two observations of early scientist that support it?
They have money
Would you describe two contributions made by scientists so you could learn about cells?
the cell theory and the microscope
Zacharias jansenns contribution to the cell theory?
Based on the timeline of the cell theory, father and son, Hans and Zacharias Janssen started produced the first compound microscope. They combined two convex lenses within a tube. This was in the year 1595.
What two actions should the technician take if the testing did not identify an exact cause?
Establish a new theory of probable causes. document correct the problem.
