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Reil [10]
2 years ago
13

Explain how bacteria develop resistance to antibiotics

Biology
1 answer:
Bad White [126]2 years ago
7 0

Explanation:

Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.

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Hi can anyone plss help me with this!!!
storchak [24]

Answer:

The number of trophic level in food chain is limited because at each trophic level a large amount of energy is being utilized for the maintenance of organism and lost as heat. 

Explanation:

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2 years ago
Each dot that makes up a satellite image is called a pixel.   Please select the best answer from the choices provided T F
disa [49]
True - a satellite image is made up of thousands of tiny dots called pixels 
5 0
3 years ago
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What are the main ideas behind the cell theory? Check all the apply
Art [367]

Answer:

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Explanation:

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2 years ago
The heart is important for transporting oxygen to the muscles when we exercise. How does the heart rate change when we go from s
Savatey [412]

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6 0
3 years ago
What species is/are formed at the anode of the alkaline fuel cell?
umka21 [38]

Fuel cells can make an electricity from a simple electrochemical reaction in which oxygen and hydrogen combine to form water. There are several different types of fuel cell but they are all based around a central design which consists of two electrodes, a negative anode and a positive cathode. These are separated by a solid or liquid electrolyte that carries electrically charged particles between the two electrodes. A catalyst, such as platinum, is often used to speed up the reactions at the electrodes. Fuel cells are classified according to the nature of the electrolyte. Every type needs particular materials and fuels and is suitable for any applications. The article below uses the proton exchange membrane fuel cell to illustrate the science and technology behind the fuel cell concept but the characteristics and applications of the other main designs are also discussed.  Proton Exchange Membrane Fuel Cells (PEMFC)

The hydrogen ions permeate across the electrolyte to the cathode, while the electrons flow through an external circuit and provide power. Oxygen, in the form of air, is supplied to the cathode and this combines with the electrons and the hydrogen ions to produce water. These reactions at the electrodes are as follows:

Anode: 2H24H+ + 4e-

Cathode: O2 + 4H+ + 4e- 2H2O

Overall: 2H2 + O22H2O + energy

PEM cells operate at a temperature of around 80°C. At this low temperature the electrochemical reactions would normally occur very slowly so they are catalysed by a thin layer of platinum on each electrode.

3 0
3 years ago
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