ANSWER:
Needed to form cell membranes
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Librax is a medicine which is composed by:
- Chlordiazepoxide: it's a benzodiazepine. All benzodiazepine should never be taken with other drugs because it will major its effects. a person with <span>a history of substance abuse should not take Librax.
- Clidinium: It's a drug with anticholinergic effects, they are known for being avoided in persons with prostate hyperplasia because it will cause </span>urinary retention<span> and glaucoma due to its mydriasis effect.</span>
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.
Answer:
There are three castes in honey bees:
- drones
- workers
- queens.
Explanation:
There are three castes in honey bees:
- Drones-Male honey bees are drones. The head and thorax of the drone are bigger than the females.
- Queens-Honey bee queens are the species' reproductive women.
- Workers-Workers' sweet bees are generally non-reproductive women.
Answer:
during initiation
Explanation:
when an initiator tRNA anticodon recognizes a start codon on mRNA bound to a small ribsomal submit.
