the origin of cells.docx - 1. Cell Biology Core – 1.5 The...

1. Cell Biology (Core) – 1.5 The origin of cells
Name: Medha Rathore
Understandings, Applications and Skills (This is what you maybe assessed on)
Statement Guidance
1.5.U1 Cells can only be formed by division of pre-existing cells. Students should be aware that the 64
codons in the genetic code have the
same meanings in nearly all organisms,
but that there are some minor variations
that are likely to have accrued since the
common origin of life on Earth.
1.5.U2 The first cells must have arisen from non-living material.
1.5.U3 The origin of eukaryotic cells can be explained by the
endosymbiotic theory.
Evidence for the endosymbiotic theory is
expected. The origin of eukaryote cilia
and flagella does not need to be included.
1.5.A1 Evidence from Pasteur’s experiments that spontaneous
generation of cells and organisms does not now occur
on Earth.
Recommended resources:
(Chris Paine)

- the - origin - of - cells.html
Allott, Andrew. Biology: Course Companion. S.l.: Oxford UP, 2014. Print.
1.5.A1 Evidence from Pasteur’s experiments that spontaneous generation of cells and organisms does
not now occur on Earth. AND Nature of Science: Testing the general principles that underlie the natural
world - the principle that cells only come from pre-existing cells needs to be verified. (1.9)
Louis Pasteur designed an experiment to
test whether sterile nutrient broth could
spontaneously generate microbial life. To
do this, he set up two experiments.