Maximal transcription of the lac operon requires the presence of high levels of glucose the presence of high levels of glucose A the removal of the operator region of the operon the removal of the operator region of the operon B the presence of cyclic AMP and lactose the presence of cyclic AMP and lactose C the activation of the repressor protein

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave