The correct answer is Bacteria can't survive in a hypertonic solution because they lose water.
The 20-30% salt solution is hypertonic as Compared to the bacterial concentration of salt. In this case, the bacteria present in the solution would lose water. Due to excess loss of water, the bacteria would eventually shrink and die. Hence, green olives preserved in the brine would be safe from microbial attack.
Answer:
Taken in 1952, this image is the first X-ray picture of DNA, which led to the discovery of its molecular structure by Watson and Crick. Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule.
The initial size of the cultured bacteria was around 2000 after an hour the bacteria count turned to 16000 with the value of n = 8000.
Given:
n = 1000 e^ (kt)
note when t = 0,
e^kt = e^0 = 1
1000*1 ar t = 0
Stepwise solution,
4000/1000 = 4 = e^(k*1)
or
e^k = 4
k = In 4 = 1.386
when n = 1000,
n = 1000 e^(!.386 t)
t = 1.5
n = 1000 e^(2.079)
n = 8000
Hence, the correct answer is (n=4000)
Learn more about bacterial culture,
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