Answer:
When the lactose in absent then under such a situation the Lac repressor protein bind to lac operator and prevents the transcription of lac Z, lacY and lac A gene by the RNA polymerase. When the lactose is present then the allolactose binds to lac repressor and prevent repressor binding and the lac operon is called inducible.
When the concentration of lactose is high then at that time the lac operon is turned on and CAP is bind and bacteria is able to use lactose. When the concentration of lactose is low inside the cell under such a situation the lac operon is shut off and bacteria are not able to use lactose
Answer:
Interestingly, some cells in the body, such as muscle cells, contain more than one nucleus ((Figure)), which is known as multinucleated. Other cells, such as mammalian red blood cells (RBCs), do not contain nuclei at all.
Explanation:
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These microbial infections that are acquired by hospital patients as they are being used as the compromised host are the nosocomial infections. These type of infections are primarily caused by bacterial pathogens entering the patient's body and mainly causes urinary tract infection, pneumonia, and other illnesses.
Explanation:
G A T and C are all bits of DNA (deoxyribonucleic acid)
G stands for Guanine A stands for Adenine C stands for Cytosine and T stands for Thymine, when Guanine is in the DNA it always pairs with Cytosine creating G-C and the same is for Thymine and Adenine, when they are sequenced in such a way it just shows how the DNA is placed.
Red blood cells (RBCs), also called erythrocytes, are cells that circulate in the blood and carry oxygen throughout the body. Abnormally shaped blood cells are called poikilocytes. RBCs carry oxygen and nutrients to your body’s tissues and organs. If your RBCs are irregularly shaped, they may not be able to carry enough oxygen.
