Which scientist showed that organisms did not grow spontaneously in beef broth

Louis Pasteur

Explanation:

Louis Pasteur, contrary to the theory advocated by Needham (theory of ambiogenesis. This theory defends the idea that life can be spontaneously generated from inanimate matter), placed broth in a long-necked glass balloon that It was then curved into an "S" shape. This broth was boiled and remained sterile for a long time even with the glass open. There was no microorganism in this broth.

As the vial has been sterilized and the neck has been bent, the microorganisms present in the air are retained in the curve. It was important to keep the bottle open because proponents of the theory of abiogenesis claimed that a glass with a lid prevents the entry of the "active principle," according to them a nonmaterial life force. With the experiment, Pasteur proved that living things originate from other pre-existing ones, in this case air microorganisms.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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