B. Effective against all pathogens
<u>Answer:</u> The final population of Proteus vulgaris after 6 hours is 
<u>Explanation:</u>
We are given:
Proteus vulgaris divides and doubles every 28 minutes
Total time given = 6 hours = 360 min (Conversion factor: 1 hr = 60 min)
Number of times Proteus vulgaris doubles in 6 hours = 
Calculating the number of bacteria after 6 hours under ideal conditions:
We are given:
Initial population = 500 cells
Number of times it doubles = 12.857 times
Final Proteus vulgaris population = 
Hence, the final population of Proteus vulgaris after 6 hours is 
<span>A) Viruses are not alive. - yes they are alive, dead viruses are used in vaccines
B) Viruses have no protective shell. - yes, they have
C) Viruses have no lytic cycle. - this is specfic for bateria
D) Viruses do not contain DNA. - every virus contain a DNA!
your answer is C</span>
Answer:
Option A. Air pollution can cause water pollution.
Explanation:
Substances can permeate into the water from the air.
Answer:
Electrolytes are nothing but minerals that have electric charge when it is mixed in liquid like blood. thus the sodium and potassium electrolytes will help regulate the nerve and muscle function. They also maintain the acid-base balance by regulating the electric charge on the cells and water flow across the membrane.
Explanation: