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SVEN [57.7K]
2 years ago
7

Identify which two of Koch's postulates would most likely not be fulfilled when trying to link a human virus to a particular dis

ease. Choose one or more: A. The microbe is found in all cases of the disease but is absent from healthy individuals. B. The microbe is isolated from the diseased host and grown in pure culture. C. When the microbe is introduced into a healthy, nonhuman experimental host, the same disease occurs. D. The same strain of microbe is obtained from a newly diseased host.
Biology
1 answer:
hammer [34]2 years ago
3 0

Answer:

 A) & B)

Explanation:

A) There are certain viruses that are present in both healthy and disease people.

Example: Polio virus is found in many human but it causes disesease in only 1% of human.

B) Viruses require host machinery for replication so they may not replicate in pure culture.

The postulate C is also violated, the virus may not produce disease in non-human experimental host because of inappropriate animal or vaccinated animal etc. Others exception includes, the same disease may be caused by various organisms and different organisms can also cause the same disease.

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Answer:

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3 years ago
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The wind speed is C. 105 to 177mph
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Before assessing the two given cases, an assumption needs to be made about the digestion of the two types of food items, corn and beef. Let us assume that both get digested by expending same amount of energy by the human body. Let the amount of energy at producer level be an arbitrary X.

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Since corn is at the producer level, it will have X amount of energy. The transfer of energy from corn to human will take place with a loss of 90% energy at the producer level. Hence the humans will receive 10% of X amount of energy.

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If a homozygous black bull is mated with a homozygous white cow and the calf is gray, this would be an example of ________. howe
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Incomplete dominance is a form of transitional inheritance in which one allele for an explicit trait is not entirely expressed over its paired allele. This effects in a third phenotype in which the expressed physical trait is a mixture of the phenotypes of both alleles.

 

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<span> </span>

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3 years ago
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