Rudolf Virchow.
One hypothesis is that plant cells emerged as the product of an endosymbiosis between "primitive" eukaryotic cells and cyanobacteria.
Onion cells have a clear, definite shape.
Groups of scientific statements about the cell and the relationship between organisms and cells is call an hypothesis. An hypothesis is a proposed explanation for a phenomenon which is testable.
endosymbiotic theory
Rudolf Virchow.
Guard cells are responsible.There two hypothesis explaining opening and closing of stomata. 1.sugar-starch hypothesis 2.potassium ion hypothesis
One hypothesis is that plant cells emerged as the product of an endosymbiosis between "primitive" eukaryotic cells and cyanobacteria.
When writing hypotheses the null hypothesis is generally the hypothesis stating that there will be no significant difference between the variables you are testing. An alternate hypothesis would be a hypothesis suggesting that the results will be anything other than not significant. For example if you were testing three concentrations (low, medium, and high) of a type of medication on cancer cells, then one example of an alternate hypothesis would be that the medium concentration would decrease the number of viable cancer cells.
Onion cells have a clear, definite shape.
Groups of scientific statements about the cell and the relationship between organisms and cells is call an hypothesis. An hypothesis is a proposed explanation for a phenomenon which is testable.
Hypothesis
endosymbiotic theory
The endosymbiotic hypothesis postulates that an early eukaryotic cells lacking mitochondria and chloroplasts phagocytosed early aerobic prokaryotes and photosynthetic prokaryotes and rather than
an onion cell is a plant cell, in which plant cells are rectangular shape and so are onion cells
If all organisms are made of cells (premise 1), and humans are organisms (premise 2), then humans are composed of cells (deduction).
A hypothesis