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katrin2010 [14]
3 years ago
8

PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I NEED YOUR HELP WITH THIS QUESTION!!!!!! I AM TAKING A QUIZ

ON THIS!!!!
First, crystal violet stain is applied, a series of rinses are used, and then a (blank) stain is applied. A Gram-Positive bacteria culture will stain purple or blue, while a Gram-Negative bacteria culture will stain pink.
A )crystal violet
B) pink
C) safranine
Biology
1 answer:
san4es73 [151]3 years ago
7 0

Answer:

A

Explanation:

Gram positive bacteria stain violet due to the presence of a thick layer of peptidoglycan in their cell walls, which retains the crystal violet these cells are stained with.

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The scala media is rich in K+ while the scale vestibuli and tympani are rich in Na+.
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Answer:

The given statement is True.

Explanation:

Scala media has endolymph as its constituent and endolymph  is rich in Potassium ions (K+)

whereas

Scala tympani and  scala vestibuli has in its composition Perilymph and Perilymph has sodium ions as their major constituent ions.

Therefore, scala media is Potassium ion rich while scala tympani and vestibuli are sodium ion rich.

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people who take antibiotics are always told to complete the treatment rather than stop taking the medication when they feel bett
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What would most likely occur during the formation of rocks.
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1)In your own words explain what air pollution is
Anna11 [10]

Explanation:

Question 1

Air pollution is the introduction of harmful gases and substances into the atmosphere that renders it unfit for use for life. Some of these toxic gases and particulates are:

  • Carbon monoxide
  • Carbon dioxide
  • Nitrogen oxides
  • Smoke
  • Dust particles
  • Soot

Question 2

Natural forms are the original nature or outlook of a substance. Examples of natural forms are:

  • Flowers
  • Leaves
  • Animals
  • Rocks
  • Shells
  • Corals

Question 3

Anthropogenic cause of pollution are human causes of pollution. Some of these are:

  • Combustion of fossil fuels in internal combustion engines release harmful and toxic gases into the atmosphere and causes hair pollution.
  • Improper disposal of waste can produce effluent that reaches the ground water system and other fresh water sources.
  • Noise pollution from airports is very harmful to ear.
  • Mining activities degrades soil and removes rich fertile soils that should be used for agriculture.
  • Mining wastes can lead to contamination of water bodies around.

Question 4

Fossil fuels are fuel types that forms from natural process in which organisms are decomposed anaerobically to preserve their energy components. Some of these fuels are:

  • Coal
  • Crude oil
  • Natural gas

Question 5

  • Heart diseases ; ischaemic heart diseases can lead to failure of the heart when it does not receive enough oxygen from the environment. Air pollution contaminates available oxygen in the atmosphere and this is very dangerous to life.
  • Lung cancer: poor air quality can lead to the development of cancerous tumor in the lungs.
  • Asthma: air pollution is one of the leading cause of asthma.

Other notable mentions are bronchitis, pulmonary diseases, stroke

Question 6

_7 million____ people die each year from air pollution according to the world health organization

Question 7

Air Quality Index(AQI) is an indicator used to express the quality of air in particular area. The AQI can tell the present air quality condition. It can also be used to forecast future air quality in years to come.

It shows how clean and polluted the air is.

Question 8

The air quality index uses different colors to alert people about the quality of air. Each color represents different health implication of air quality:

     Attached image shows the different colors used to alert people of about the air quality.

Question 9

  • About 7 million people die annually as a result of air pollution
  • Beijing cough is new disease that emanates from the rising air pollution in Beijing
  • Asia has the fastest rising cases of air pollution problems.
  • The best way to reduce air pollution is by riding bicycles and walking more.

Learn more:

Air pollution brainly.com/question/10743354

#learnwithBrainly

3 0
4 years ago
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