In which stage of pertussis is the characteristic whooping sound made?

Biology

1 answer:

maksim [4K]3 years ago

5 0

Answer:

paroxysmal

Explanation:

Pertussis is highly contagious and acute respiratory disease which is caused by bacteria Bordetella pertussis.

The disease has 3 types of stages which are catarrhal stage, paroxysmal stage, and convalescent stage.

The paroxysmal stage of the Pertussis is characterized by the episodes of the coughing with a distinctive sound which is known as whopping during the process of inspiration.

This type of cough gives disease the common name which is called Whooping Cough.

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How the sweat glands are affected by the parasympathetic nervous system?

andriy [413]

Answer:

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3 years ago

A researcher recorded that a chemical reaction required 2.90 gal water and raised the temperature of the reaction vessel by 57 F

Bess [88]

A. 11.0 L is the researcher's volume measurement to the SL units of liter

Explanation:

Given that a researcher recorded that the chemical reaction has water = 2.90 gallon.

We have to convert the researcher's volume into the SL units of liter.

So, we know that 1 gallon = 3.875 liters.

Then we have to convert 2.90 gallons of water in to liters.

Then , volume in L = $(volume\ in \ gal) \times (3.875 L/1 gal)$ = $(2.90) \times (3.875L/1 gal)$