Blood 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.
The bacteria and blue green algae are exception of the cell theory because they are devoid of the true nucleus or well organized nucleus.
The first cell did not come from a preexisting cell and viruses
only in a host cell
which statement represents an exception to the cell theory
Striated muscle fibers are considered an exception to the cell theory because they are multinucleated, meaning they have multiple nuclei within a single cell. This contradicts the cell theory's principle that states all living organisms are composed of one or more cells.
Mitochondria are an exception to the cell theory because they contain their own DNA, can replicate independently of the cell, and have their own ribosomes to make proteins. This suggests that mitochondria have a separate evolutionary origin from the rest of the cell and may have once been free-living organisms that were engulfed by a host cell.
They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
An exception to the cell theory is the existence of viruses, which are not composed of cells and cannot perform metabolic processes independently. Viruses rely on host cells for replication and do not have the cellular structure that characterizes living organisms. This challenges the cell theory's assertion that all living organisms are made of cells.
The name of the theory that Schleiden and Schwann developed is the cell theory.
the cell thery
they official formulated the cell theory in 1665
No, the germ theory and the cell theory are not the same. The germ theory explains that certain microorganisms can cause diseases, while the cell theory states that all living organisms are composed of cells as the fundamental units of structure and function.