When there is a high concentration of positive transcription factors but a low affinity for the positive transcription factor
Transcription factors are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a protein.
Proteins called transcription factors, however, play a particularly central role in regulating transcription. These important proteins help determine which genes are active in each cell of your body.
<h3>How does transcription factors affect gene expression?</h3>
Under the influence of transcription factors, the various cells of the body can function differently though they have the same genome. Transcription factors attach to one or more series sites, which are called transcription element binding sites (TFBSs), binding to specific DNA sequences of the genes they control
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Ecologists are the persons who study the interrelationships between organisms and their environments. Like they research upon the species found in forests or deserts interact with each other and as well as their surroundings.
They test whether a species is occupying its complete fundamental niche or only a portion of it by observing if the species are expanding their range after the removal of a competitor because two species with the same fundamental niche will exclude other competing species.
Answer:
(B). The drug is reabsorbed.
Explanation:
Renal clearance rate determines the excretion of drugs into the urine during excretion. It is used to study the main process associated with a drug's renal excretion.
When the renal clearance rate is lower than GFR (glomerulus filtration rate), the drug is absorbed in the renal tubules. When the renal clearance rate is higher than GFR, the drug is secreted into the urine. When the renal clearance rate is equal to the GFR, the drug is neither reabsorbed nor secreted.
As for given drug, renal clearance is 20 ml/min (less than GFR), this drug will reabsorbed.
Thus, the correct answer is option (B).
The right option is; a. fatty substances called lipids inside the cell
Among other changes caused by cell aging, there is an increase in pigments and fatty substances called lipids inside the cell.
Aging occurs in the body's cells, tissues, and organs and it therefore affects the functioning of all body systems. Cell aging makes cells sizes to increase and reduces their ability to reproduce. It causes an increase in pigments and fatty substances (lipids) inside the cell. This makes the cells to be inactive or to function abnormally. Aging also causes the accumulation of waste products in tissues.
