⏸ The quiz 'Biology Full Syllabus Mock | #388 R | by @Amphetamine0007' was paused because nobody was answering.
(A)-A low level of expression of lac operon occurs at all the time. (R)-In the complete absence of expression of lac operon, permease will not be synthesised which is essential for transport of lactose from the medium into the cells. And if lactose cannot be transported into the cell, then it cannot act an inducer. Hence, it cannot relieve the lac operon from its repressed state. Therefore, a low level of expression of the lac operon occurs as contantly to maintain a baseline level of permease production, ensuring that lactose can be transported into the cell when available
⏸ The quiz 'Biology Full Syllabus Mock | #388 R | by @Amphetamine0007' was paused because nobody was answering.
(A)-Why is it that the line of treatment for a genetic disease is different from infectious diseases (R)-Genetic diseases, are caused by mutations in DNA which cannot be treated with any medication, only the signs and symptoms can be taken care of. The only way to treat them is by the correct manipulation of genes or replacement of the faulty genes. On the other hand, infectious diseases are caused by pathogens and therefore, can be treated by substances that kill the pathogen or hamper its growth
(A)-Plants require water for their survival. But when watered excessively, plants die. (R)-Plants use water for several metabolic process such as photosynthesis, transpiration and respiration. Plants die when watered in excess, because excess water removes the air trapped between the soil particles. So, plant roots do not get O2 for respiration. Once root cells die, water and mineral absorption is stopped and this leads to gradual death of a plant
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