Answer:
Option B is correct.
Explanation:
Carbohydrate fermentation test; its main purpose is to know if a bacteria can ferment a specific carbohydrate or not. The test can be used for distinguishing bacterial species.
When fermentation of carbohydrate occurs, gaseous acids are produced. This production of the acid lower the pH of the medium undergoing the test, which can be detected by the color change of the pH indicator.
The Color changes only when sufficient amount of acid is produced. Phenol red can easily detect single acid production but METHYL RED NEED MORE ACID.
D, is the answer. If you take antibiotics more than you're supposed to your immune system gets used to it and it no longer works.
In this, case we have that the egret is benefited by eating the insects that come out from the grass, nonetheless the antelope gets no benefit nor damage from this, so we can say that the correct answer is option A.
a. that are all affected
Since the father is homozygous dominant (AA), and he is affected, that means that the disorder (or whatever it is), is autosomal dominant (plus it directly tells you that). That means it is not carried on the sex chromosomes. Since every child he has will inherit one of his alleles, they will all be affected by having at least the one.
Either A. or E. I’m thinking E.
