Question

Which of the following is a prediction based on the cell theory that all organisms are made of cells, and all cells come from preexisting cells?If you boil nutrient broth and place it in an air-tight flask, nocells will appear in the broth

Answer 1

Based on the cell theory, which states that all cells come from pre-existing cells, if nutrient broth is boiled and placed in an air-tight flask, no cells will appear because there are no pre-existing cells to give rise to new ones.

Step-by-step explanation:

The subject of the question is the cell theory, which is foundational in the field of Biology. One prediction based on the cell theory is that if you boil nutrient broth and place it in an air-tight flask, no cells will appear in the broth. This prediction is derived from the principle that all cells come from pre-existing cells. As boiling the broth kills any pre-existing cells, and the air-tight environment prevents any new cells from entering, no new cells should spontaneously generate. This reflects one of the central ideas of the cell theory, which states that all organisms are composed of cells, cells carry out the life functions of organisms, and crucially, all cells originate from other, pre-existing cells (the principle of biogenesis). This scenario was experimentally demonstrated by Louis Pasteur, who used swan-neck flasks to show that nutrient broths remained free of microorganisms when protected from pre-existing cells, which was an important step in disproving the idea of spontaneous generation.

Answer 2

The answer is C.

Step-by-step explanation:

The question is incomplete, here is the full question:

Which of the following is a prediction based on the cell theory that all organisms are made of cells, and all cells come from preexisting cells?

A) If you boil nutrient broth and place it in an air-tight flask, cells will appear in the broth

B) Cells are produced only from pre-existing cells

C) If you boil nutrient broth and place it in an air-tight flask, no cells will appear in the broth

D) Cells arise spontaneously from nonliving material

According to the cell theory, all living organisms contain cells and all cells are made up of pre-existing cells. Out of the options given in the question, the option C can be a prediction based on cell theory since after boiling and killing all the cells and providing an environment, in this case the flask, where no other organism can interact or get in, our observations should be towards no new cells appearing in the broth.

I hope this answer helps.