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igomit [66]
3 years ago
15

A scientist is studying a form of marine bacteria growing in culture dishes. He noticed that a clear area formed around the mold

where the bacteria that had grown in this area died (this is now referred to as a zone of inhibition). In the culture dishes that had no mold, no zones of inhibition were present. Formulate a valid hypothesis based on his observations.
A.) The temperature in the lab was too cold for the mold to grow.
B.) The mold must be producing a chemical that killed the bacteria.
C.) The bacteria must be producing a chemical that killed the mold.
D.) The temperature in the lab was too cold for the bacteria to grow.

Biology
2 answers:
blondinia [14]3 years ago
4 0
The answer would be C
The mold is most likely an antibiotic which produces substances harmful to the strain of bacteria and therefore any bacteria in its zone of inhibition will die as a result

hope that jhelps
Karo-lina-s [1.5K]3 years ago
4 0

Correct answer: B.) The mold must be producing a chemical that killed the bacteria.

Antibiotics is an antimicrobial substance that is used against bacterial infection. They work to inhibit the growth of bacteria either by slowing the growth of bacteria or by killing them. They are not used against viral infections like common cold or flu.

Penicillin was first antibiotics that were discovered by Alexander Fleming while working in the lab with the mold <em>Penicillium notatum</em>



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How many amino acids could be specified if codons consisted of two nucleotides instead of three? What problem would this present
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This could result in a mutation.

Explanation:

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7 0
3 years ago
If all of the Leopard Seals died, what would happen
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the killer whales would die of starvation as they would have no source of food, and the cod would become overpopulated. The krill would be scarce, and the algae would over grow.

I hope this helps

8 0
3 years ago
What effect do you expect the structural differences between prokaryotes and eukaryotes to have on their functions?
Shtirlitz [24]
The main difference between prokaryotes and eukaryotes is the presence of nucleus in eukaryotes and its absence in prokaryotes. Also, prokaryotes are unicellular, so one cell is a whole organism. On the other hand, eukaryotes are mainly multicellular, and thus more complex. More complex DNA is inside the nucleus in the eukaryotes which enables them to conduct a wider range of functions. Prokaryotes, as a single cell, have simple functions present.
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3 years ago
What is codomaince? how does it affect the genotype?
Contact [7]

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In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.

Explanation:

:D

5 0
3 years ago
Which step is part of the engineering process but is not part of a scientific investagation
mote1985 [20]

The step that forms part of the engineering process but is not part of a scientific investigation is designing a solution.

<h3>What is the scientific process?</h3>

The scientific process refers to a series of steps called the scientific method which is used to collect empirical evidence and thus test hypotheses.

The engineering process is aimed at finding a solution to problems found in daily issues, which does not correspond to science and the scientific method.

In conclusion, the step that forms part of the engineering process but is not part of a scientific investigation is designing a solution.

Learn more about the scientific process here:

brainly.com/question/17216882

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5 0
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