Question

In 1862, a French chemist named Louis Pasteur performed the following experiment.

Pasteur placed broth in a special type of flask that allowed air to enter and exit. Then, he heated the broth and flask, so they no longer contained any bacterial cells. Finally, after observing the flask for a few days and noticing that nothing grew in the flask, he was able to conclude that
A.
only air is required to generate new cells.
B.
bacteria are not living organisms.
C.
cells are spontaneously created from nonliving matter.
D.
all cells must come from pre-existing cells.

Answer 1

All cells must come from pre-existing cells.

Step-by-step explanation:

i j did the problem on study island hope this helps

Answer 2

Step-by-step explanation:

Louis Pasteur discovered that heat kills germs in liquids, preventing bacterial growth, food spoilage and foodborne illnesses