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Gene repressor proteins which inhibit the transcription of particular genes in eukaryotes also exist. They may act by binding either to control parts within the promoter region near the gene or at sites located a long distance away from the gene, called as silencers. The repressor protein should inhibit transcription directly. One instance is the mammalian thyroid hormone receptor that, in the absence of thyroid hormone represses transcription of the goal genes. Furthermore, other repressors inhibit transcription by blocking activation. This can be get in one of several ways: by blocking the DNA binding site for an activator protein, through binding to and masking the activation domain of the activator factor, or by forming a non-DNA binding complex with the activator protein. Several instance of every mode of action are known.
What are Goitrogens? Certain chemical substances like thiocyanates, phenols, disuphides, flavanoids etc, found in the environment, can interfere with iodine metabolism. These s
Define the functional properties of hydrocolloids The hydrocolloids not only have the functional properties but also have nutritional characteristics. Most polysaccharide gums
Temperature and Concentration of Nutrients Temperature Temperature like salinity remains almost constant in the oceans in contrast to the land or terrestrial ecosystems
Select all that are true/correct: Stable atoms have no vacancies in their outer shell. Hydrogen is more stable than carbon Helium is more stable than carbon Helium is more stable t
Pituitary The pituitary is also known as hypophysis. It is composed of two embryologically distinct tissue. The anterior pituitary or adenohypophysis is derived from the roof
Which is better to grow plants in Rock sand or soil? When we grew plants inside, with there is no wind, and the plants in the rocks grew improved than the plants that were grow
What are antioxidants? To put it simply, antioxidants are important naturally occurring nutrients, (vitamins, minerals) which help to protect body from certain types of cancers
Phylum Chlorophyta (green algae) 1) The chlorophyll is the main photosynthetic pigment. 2) There is little or no cell differention in thallus. Thallus is usually filamento
What types of individuals in a population are represented by the two ends of a bell curve?
What are the main parts of the human ear? The human ear is separated into three mains parts: the external ear, the middle ear and the internal ear. Hearing Review - Image D
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