The answer is option B. False. The amount of energy that a food contains can be measured not by vitamins but by calories. Vitamins are organic compounds which are found in foods, and their role in the body is to sustain and improve growth and development.
Answer: The lac operon is an inducible operon that is activated in the presence of lactose.
An operon is a unit of genes which are controlled by the single promoter and operator sequence. It consists of a regulatory gene, promoter, operator, and structural genes.
Lac (lactose) operon consists of three structural genes namely lacZ, lacY, and lacA. These genes are transcribed and translated to produce specific enzymes used for lactose metabolism.
It is called as inducible operon because lactose acts like an inducer as its presence induces the transcription process. The lactose is first converted into allolactose which then binds to repressor (synthesized by regulatory gene). In this way, it makes the repressor inactive and therefore allows the transcription of structural genes.
A) inform the white blood cells of the invader so it can be destroyed. This works because antigens are proteins, and proteins have unique complex structures; the combination of antigens on the surface of a pathogen will each cause an immune response in the body, and ultimately white blood cells are part the immune system responses to destroy this pathogen.
Answer:
in a container with a lid
Explanation:
the lid would keep it aliveand keep in a refrigator
The safest way to carry a microscope is to use your both hands : g<span>rasp the arm with one hand while placing your other hand under the base.
Hope this helps !
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