Options for part A are as follows:
A) A mutation in the operator sequence
B) A mutation in the lac-Z gene
C) A mutation in the lac-Y gene
D) A super repressor mutation
Answer:
The correct answer:
Part a - A mutation in the operator sequence
Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part C. true.
Explanation:
part a:
If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.
part b:
The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part c:
RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.
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Answer:
A. the population must be very large
Answer:
there is an abundance of fertile soil
climate and fertile soil are crucial for plant growth
1ml of milk = 1g
of milk<span>
and in 1 gram of whole milk, there is only one
calories
and in whole milk the percentage of milk
fat is 3.25%</span>
To get the percentage of milk fat, divide the
grams of fat present in milk by the total weight of milk and then multiply by
100.
<span>There are many
types of milk, like skimmed milk, low fat milk, partly skimmed, raw milk, whole
milk etc. in all these types the percentage of milk fat is different.</span>
