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3 years ago

When aerosols containing pathogens spread disease from a distance of less than one meter, it is considered

Biology

1 answer:

Lemur [1.5K]3 years ago

6 0

Answer:

b) contact transmission.

Explanation:

Contact transmission of pathogens occurs directly or indirectly between the source of the pathogens and the host organisms. During contact transmission by droplet spread, the pathogen is carried on smaller particles. These particles move through air for a very short distance, usually less than a meter. Therefore, droplet transmission of a pathogen requires that the source and host are present in close proximity.

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How are increased CO2 levels and increased temperatures affecting plant growth in the two experiments shown?

wlad13 [49]

High CO2 levels cause plants to thicken their leave ,which could worsen climate change effect researchers says.

plant scientists observed that when CO2 levels increase in the atmosphere most plants do unusual , they thicker their leave

germination increase in high temperature up to the point

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3 years ago

Which correctly lists three properties that are used to identify minerals? luster, weight, streak magnetism, size, weight size,

Dovator [93]

Answer:

luster, streak, hardness, cleavage, fracture, and crystal form are the most useful physical properties for identifying most minerals. Other properties-such as reaction with acid, magnetism, specific gravity, tenacity, taste, odor, feel, and presence of striations-are helpful in identifying certain minerals.

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3 years ago

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Which classes are included in the group Tetraapoda

lakkis [162]

Amphibia,

Reptilia, Aves, and Mammalia are included in the group Tetrapoda. The

correct answer between all the choices given is the second choice. I am hoping

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3 years ago

Small single-stranded RNA molecules called microRNAs (miRNAs) are capable of base pairing with specific binding sites in the 3′

gogolik [260]

Answer:

Option D is correct.

Explanation:

Option a) given in the option that if promoter is altered it will inhibit transcription which is the process by which information present in DNA converted to mRNA which require RNA polymerase which bind to promoter site so if promoter is altered RNA polymerase will not bind so transcription will be inhibited but above question is asking about inhibition of translation due to binding of miRNA-delta molecule to Q mRNA so this option can be eliminated.

Option b if miRNA binding site sequence is altered miRNA molecule will not be able to bind to Q mRNA so translation will not be inhibited hence option b is incorrect

Option c translation of Q mRNA is inhibited when miRNA - delta is present not absent

So option c can be eliminated

Option d if miRNA binding sequence is altered miRNA molecule if present will not bind to Q mRNA hence translation of Q mRNA will occur & not inhibited

Hence option d is correct

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3 years ago

Which of the following is a promise advertisers could make to promote healthy living using fitness equipment? "Use full body mov

tamaranim1 [39]

The answer is the second option.

The first and fourth options do not involve fitness equipment.
While the third option includes "the heaviest weights," they are the results of "three complete workouts," not the means to a healthier lifestyle.

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3 years ago

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