What was the variable in Pasteur's experiment?
a straight neck flask to allow air to get in
a swan neck flask that prevented air from getting in
uncovered meat that had contact with air
meat sealed in jars that didn’t have contact with air
Answers
SPONTANEOUS GENERATION
A B
Abiogenesis or Spontaneous Generation Living things come from nonliving material.
Biogenesis Living things come only from pre-existing living things.
Francesco Redi Proved that maggots come from the eggs laid by flies on meat.
Lazzaro Spallanzani Tried to disprove spontaneous generation by boiling broth in two flasks, covering one and leaving the other open.
Louis Pasteur Successfully disproved spontaneous generation by boiling broth in flasks with long, curved necks.
Maggots Larvae of flies.
Manipulated variable The one factor that a scientist changes in an experiment.
Controlled experiment An experiment in which all factors are identical except one.
What was the manipulated variable in Redi's experiment? Jar cover
What was the control setup in Redi's experiment? The open jar of meat
Controlled variables The conditions in an experiment that are kept the same.
Experimental setup The part of an experiment that has the manipulated variable.
Control setup The part of the experiment that does not have the manipulated variable.
Why is a control setup necessary in an experiment? It serves as a standard for comparison.
What were the manipulated variables in Spallanzani's experiment? Stopper and air.
What was the manipulated variable in Pasteur's experiment? The boiling of the broth
What was the experimental setup in Redi's experiment? The covered jar of meat
What was the experimental setup in Spallanzani's experiment? The sealed flask of broth
What was the experimental setup in Pasteur's experiment? The boiled flask of broth.
What was the control setup in Spallanzani's experiment? The open flask of broth
What was the control setup in Pastuer's experiment? The unboiled flask of broth
Why wasn't Spallanzani's conclusion accepted by other scientists? He had two manipulated variables.
directly or indirectly, living things us Energy.
MARK IT As THE BRAINLIEST ANSWER.
Answer:
meat sealed in jars that didn’t have contact with air.
Explanation:
I took test, i'm 1000% SURE.