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Lemur [1.5K]
3 years ago
13

The d-value of a bacterial culture heated to 100°c is the time it takes to kill ________% of the population.

Biology
1 answer:
ira [324]3 years ago
7 0

The d-value of a bacterial culture heated to 100°c is the time it takes to kill 90% of the population.

D-value or decimal reduction dose is a term used in microbiology and it refers to decimal reduction time. It can be defined as the time (or dose) required at a given condition (e.g. temperature), to kill 90% of the exposed bacteria.


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What is environment?​
Oksi-84 [34.3K]

Answer:

environment is the surroundings or conditions in which a person, animal, or plant lives or operates or the natural world, as a whole or in a particular geographical area, especially as affected by human activity. hope this helps

Explanation:

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Which organelles do scientists believe originated by symbiotic relationships between primitive eukaryotes and certain prokaryote
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7 0
3 years ago
Suppose the volume of milk in a glass is 230 cubic cm. If 1 gallon of milk equals 3.79 liters, there are how many glasses of mil
balu736 [363]
Volume of milk that a glass can hold = 230 cubic cm
It is already given that
1 gallon of milk = 3.79 liters
W already know
1 liter = 1000 cubic cm
Then
3.79 liters = 1000 * 3.79 cubic cm
                = 3790 cubic cm
Now
Number of glasses needed to contain 230 cm^3 of milk = 1
So
<span>Number of glasses needed to contain 3790 cm^3 of milk = 3790/230
</span>                                                                                           = 16.48
From the above deduction, we can conclude that 17 glasses of milk are required to hold 1 gallon of milk.
4 0
3 years ago
In a species of fish, fin shape is controlled by a single gene that has only two alleles. In a generation of 185 fish, the frequ
scZoUnD [109]

The correct answer is: The recessive allele produces a phenotype that is better able to survive and reproduce than the dominant phenotype.

Natural selection (adaptation mechanism), gene flow, and mutation combine to change allele frequencies across generations. Natural selection tends to increase in frequency beneficial alleles, while it tends to decrease in frequency deleterious alleles.


5 0
3 years ago
The major cause of water pollution by industries involves
Luba_88 [7]

Answer:

Toxic chemicals is a major cause of water pollution. In most cases, the toxic chemicals came from the residual from production process after companies done making their product

Explanation:

3 0
2 years ago
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