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Alekssandra [29.7K]
1 year ago
9

Assume that one of the disinfectant/antiseptics tested using the disc method had a clear zone of inhibition and to your surprise

, you discover minute growth near the disc. What would explain this phenomenon
Biology
1 answer:
o-na [289]1 year ago
8 0

The presence of the minute growth near the disc signifies that the bacterial innoculum contains mutant microorganisms that are able to grow in the presence of toxic substances.

<h3>What are zones of inhibition?</h3>

The sensitivity testing in a microbiology laboratory is done to determine the effect of antibiotics on various bacteria organisms

The zone of inhibition when a disk method is used signifies the area of media where bacteria are unable to grow, due to presence of a drug that impedes their growth.

If there are presence of minute growth near the disc, it means that the bacterial innoculum contains mutant microorganisms that are able to grow in the presence of toxic substances such as disinfectants.

If these mutant bacteria organisms are not cleared by the disk method, it means that they cannot be killed by the disinfectant/antiseptics that is being tested.

Learn more about antiseptics here:

brainly.com/question/26994900

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Explanation:

The Germ Theory of Disease  indicates that microbes are the causal agents in human disease.  In modern healthcare, Germ Theory has led to a breakthrough in the treatment of infectious diseases with antibiotics such as penicillin, and the prevention of disease outbreaks through proper sanitation and vaccination.

Further  Explanation:

Biology's unifying principle states that cells are the basic units of biological organisms. Cells sharing a similar origin, group together in the body to form tissues; these typically share physical features and are arranged in regular patterns. All living things, grow, respire, reproduce etc. these processes are carried out by cells, which are thus integral to their survival.

Before the discovery of cells by Robert Hooke in 1665 with a simple microscope, many scientists had long believed that life rose spontaneously over extended periods of time. Circa 1668 Francesco Redi, challenged the idea of spontaneous generation of maggots from rotting meat by placing meat in various sealed open, partially sealed and sealed containers. Sealed containers did not show the presence of maggots, and he theorized that these were likely from eggs laid on the meat by flies. This was the development of the theory disproving abiogenesis (cells arise from other living cells); this eventually proved the unifying principle we know today.

Cell theory states that living things are comprised of cells, as their smallest units capable of functioning. Microscopy helps to prove this, as cells and their varying components can readily be seen, observed and later classified.

Learn more about cellular life at brainly.com/question/11259903

Learn more about tissue types at brainly.com/question/8487952

#LearnWithBrainly

4 0
3 years ago
How are the testes and ovaries similar? A. Both produce sex cells. B. Both connect internal reproductive organs to the exterior.
Bess [88]

Ans.

Testes and ovaries are male and female reproductive organs, respectively. These organs are similiar as testes produce male gametes or sperms by the process of spermatogenesis and ovaries produce female gametes or ova by the process of oogenesis.

These gametes fuse together to form zygote that develops into a multicellular organism. Thus, the correct answer is 'option A). both produce sex cells.'

3 0
3 years ago
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What resource was an important factor to the development of the first towns and cities
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tresset_1 [31]

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Explanation:

Large algal beds die, depriving marine iguanas, turtles and many fish of their staple diet. Once weakened, strong swells and sea urchins break apart complex coral habitats that sustain diverse species changing the environment.

5 0
2 years ago
Urgent!!!!! How can a mutation benefit an organism and its descendants? Provide an example.
Mashcka [7]
A mutation can allow a organism to adapt to the environment and example can be the case of the peppered moth which has two variations a white colored one and a black colored one. The white colored ones were able to survive better that the darker ones because of how they were able to camouflage with the lichen located in the trees. However, after a while smoke particles that were released by industries darkened the trunk of the trees making the white moths visible and allowing the darker colored ones to survive. Another example can be on how organism can be resistant to bacteria this allows the animal to survive and reproduce offspring with the same mutation. I hope this helps...
6 0
3 years ago
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