When a cell is starved of one or more amino acids, synthesis of the biosynthetic machinery (rRNA and tRNA) is halted while mRNAs coding for specific amino acid synthesis are upregulated mediated by RelA, which produces ppGpp. Group startsTrue or FalseTrue, unselectedFalse, unselected

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.