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3 years ago

The simplest, yet most effective method of preventing the spread of an infectious disease is to:

1 answer:

7 0

The simplest, yet most effective method of preventing the spread of an infectious disease is to wash your hands in between patient contacts.

Washing hands regularly in the right moment will cause the pathogen harder to spread, thus making it less likely to infect other people.

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Some species of birds have special mating rituals. this is an example of

vampirchik [111]

I would select B or C as the answer because i have no idea what the other ones are :)

4 0

3 years ago

Read 2 more answers

Match the staining techniques with their purpose.

Dennis_Churaev [7]

A Negative stain such as India ink or Congo red-Look for the presence of a capsule.

This stain method is usually used to stain the area around the microorganism.

B The Gram stain-Divide bacteria into two groups based on cell wall structure (thick vs. thin).

This is type of differential staining used to distinguish organisms based on their staining properties. Gram + and Gram- bacteria stain different because of different cell wall structure.

C The Ziehl-Neelsen Acid-fast stain- Identify bacteria with waxy cell walls such as: Mycobacterium tuberculosis (the cause of TB).

This is also differential staining method which uses heat and phenol to derive dye into the cells with lipid-rich walls.

D Simple stain with a basic dye-Stain microbes a bright color to make it easier to see them in bright field microscopy.

One dye is used in simple staining in order to determinate the size, shape and arrangement of the cells.

E The Schaeffer-Fulton Endospore stain-Identify Bacillus or Clostridium species, such as the causative agents of anthrax, botulism, tetanus and gangrene.

This is a special type of staining only used for the bacteria that can form endospores. Bacteria are first treated with heat and then with malachite green, which is very strong stain that can penetrate endospores.

5 0

3 years ago

An engineer is building a new steel skyscraper in a area with a lot of Earthquakes, Compare two systems (fixed based system and

Leokris [45]

Answer:

<h2>Base isolated system</h2>

Explanation:

Fixed based system:-

A fixed-base building (built directly on the ground) will move with an earthquake’s motion and can sustain extensive damage as a result.

Base isolated system:-

A base isolation system is a method of seismic protection where the structure (superstructure) is separated from the base (foundation or substructure).

Hence,

A base isolated system is much more better in a area where there are a lot of earthquakes. 

5 0

3 years ago

Where are some places where carbon is found?

s2008m [1.1K]

Answer:

rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms.

Explanation:

carbo is found in these places for example:

6 0

1 year ago

What are the five groups of vertebrae

Cloud [144]

Fish, reptiles, amphibians, reptiles and mammals

8 0

3 years ago